Honda CRF450L / CRF450RL • 2019–2027

CRF450L / CRF450RL Rider Guide

Build a 450 you can ride with confidence. Match the engine response, suspension, seat and protection to your terrain, then choose fuel range and equipment you can carry comfortably. From the first service to a complete ECU and exhaust package, make every part earn its place.

Compare ECU + Exhaust Packages Find Your First Upgrade

All Honda CRF Rider Guides

Start With the Ride

Where will the first upgrade help most?

A useful build begins with the problem you can describe: an abrupt opening throttle, tired suspension, seat pressure, vulnerable parts or a route beyond your measured fuel range. Start with a mechanically sound bike and give the first purchase a clear job.

What interrupts the ride	Start with	Then consider
Abrupt response or low-speed stalling	Check service condition, throttle/clutch operation, intake sealing and the existing ECU configuration.	Separate the control options before choosing a matched closed-course ECU/exhaust package.
The ECU and exhaust are both due for a change	Confirm intended use, engine, intake and market.	Compare RS-4, Q4 and Factory 4.1 packages and identify the optional parts.
Harshness, excess sag or poor traction	Inspect bearings, seals, tires and suspension settings.	Match spring support and damping to the rider and normal load.
Seat pressure or cramped knees	Identify the seat height, shape and standing position that suit you.	Compare Comfort, Element, Low, Tall and XL choices.
Uncertain footing at stops	Set sag properly, then assess seat shape, boots and technique.	Plan lowering and stand fit only if the remaining reach problem warrants it.
Rocks, roots or repeated tip-overs	Inspect existing damage and the parts most exposed.	Choose a compatible protection combination without unnecessary weight.
Longer rides and extra equipment	Measure real consumption and weigh the rider, gear, accessories and cargo.	Plan fuel and load together before choosing a larger tank or rack.
Unfamiliar service history	Establish the condition and work already due.	Use the correct on-road/off-road schedule and build a service record.

Choose by use before choosing by brand. The stock U.S. L/RL is a road-equipped dual-sport. The ECU/exhaust packages and several other featured products carry closed-course restrictions. Keep those terms in the build plan. You can improve fit, suspension and protection without automatically changing every engine or lighting component.

Know the Motorcycle

CRF450L and CRF450RL fitment through 2027

The badge changed for 2021; exact year, country and installed parts still matter. This guide includes the confirmed 2027 carryover and Honda’s published 2027 model information.

Motorcycle	What to know before ordering
2019–2020 CRF450L	The original L designation. Identify the engine, electronics and modifications already fitted, particularly on a used bike.
2021–2026 CRF450RL	Honda adopted the RL name for 2021 and added plastic handguards. Do not confuse those stock shields with a complete aftermarket wraparound guard assembly.
2027 CRF450RL	The continuing L/RL platform gains new tri-color graphics. Honda also specifies a fork-oil change from SS17 to SS37; follow the correct year’s service information.
CRF450R / RX / X	Use the exact model application. A shared 450 name, component or six-speed transmission does not establish interchangeability. The new 2027 R/RX platform is not the L/RL platform.
Non-U.S. or modified L/RL	Confirm country, model code, intake tube, emissions equipment, wiring, ECU/map history, exhaust, tank, bars and suspension changes. Fitment must follow the actual motorcycle.

Sources: Honda’s 2027 model history and update notes and 2027 U.S. specifications.

Use the real year on the order. Some product titles and printed editions still stop at 2026. This guide carries applicable L/RL coverage through 2027; an earlier hard exclusion or different hardware remains a separate check. If the correct year or configuration is missing from an order form, contact us to arrange it instead of selecting a different motorcycle.

The Starting Point

2027 U.S. stock reference

These are Honda’s published 2027 U.S. figures. They describe the stock motorcycle; use the correct manual for service procedures and the parts actually installed for fitment.

Item	Honda reference	Practical meaning
Engine / fuel injection	450cc Unicam single; 12.0:1 compression; 46 mm throttle body	Use configuration-specific fuel/ignition mapping and the prescribed fuel.
Transmission / gearing	Wide-ratio six-speed; 520 chain; 13T front / 51T rear	A reference for gearing calculations, not a promised cruising speed.
Suspension	49 mm Showa fork, 12.0 in travel; Showa rear shock, 11.8 in travel	Set support and damping for the actual rider and normal equipment.
Seat / clearance	37.2 in seat height; 12.6 in ground clearance	Seat width, sag and boots affect reach. Chassis lowering changes clearance.
Tank / curb weight	2.0 US gal; 289 lb fully fueled	Measure fuel use and count added equipment when planning the build.
Wheels / stock tires	21-inch front, 18-inch rear; 80/100-21 / 120/80-18	A replacement tire’s dimensions and rating must suit the bike and use.
Brakes	260 mm front disc / 240 mm rear disc	Match the axle, compound and actual brake assembly. A wheel-speed sensor does not imply ABS.

Source: Honda 2027 U.S. CRF450RL specifications. The owner manual and marketing table use some different geometry values; this table consistently uses the dated marketing reference.

Make the Response Manageable

Throttle control, fueling and clutch behavior

A stall is a symptom. Poor adjustment, a mechanical fault, the wrong map and asking the engine to pull too low in the wrong gear need different solutions. Diagnose a new or persistent problem before buying around it.

Approach	What it changes	What it does not replace
Throttle-cam change	Changes cable opening for a given amount of grip movement, helping meter the initial opening.	Fuel/ignition calibration, smooth cable operation or clutch control.
Full ECU replacement	Changes fuel and ignition control using the supplied configuration-specific maps.	A repair for every starting, cooling or engine fault; a stock-exhaust map must be confirmed.
Flywheel weight	Adds rotational inertia for more deliberate response in slow technical riding.	An ECU tune or a horsepower increase.
Auto-clutch route	Changes clutch engagement behavior and can reduce clutch-related stalls.	Manual gear selection, correct free-play-gain setup or a brake when parked.
Lower final-drive gearing	Increases rear-wheel leverage and engine rpm at a given speed.	Additional engine power or correct clutch use.

For the stock bike, Honda’s warm-start guidance is neutral, clutch pulled and throttle closed. A modified ECU may have additional setup instructions. Use its supplied documentation for TPS calibration, map selection and supported functions; do not copy a KTM procedure or a map number from an unidentified ECU revision.

Give us enough detail to solve the actual problem. Include year and country, hot or cold engine, gear and throttle position when it happens, ECU label/map sheet, exhaust and intake changes, recent work and any fault indication. A short description of when the problem started is more useful than repeatedly changing fuel trims.

The Core Performance Decision

Choose the ECU and exhaust as a system

For a closed-course build that needs both parts, a matched package makes the first purchase straightforward. Decide which exhaust architecture and control system suit you, then select the supporting intake and controls deliberately.

Package	Why choose it	Included core	Plan separately
Vortex + Yoshimura RS-4	Vortex mapping with the RS-4 full-system layout.	Vortex ECU, complete RS-4 and spark arrestor.	Optional switch, PowerFlow and matching RS-4 header shield.
Vortex + FMF Q4 / MegaBomb	The FMF option centered on sound control.	Vortex ECU, Q4 muffler, MegaBomb header and Q4 spark-arrestor/quiet-insert configuration.	Optional switch, PowerFlow and MegaBomb shield.
Vortex + FMF Factory 4.1	Compact titanium-canister muffler with Vortex control.	Vortex ECU, Factory 4.1 muffler and MegaBomb header. Confirm exact supplied muffler/insert configuration.	Optional switch, PowerFlow, quiet insert and header shield as needed.
GET SX1 + FMF Factory 4.1	GET handlebar control, Wi-Fi tools and two supplied race maps.	SX1 ECU, Controller, Connect, Factory 4.1 muffler and MegaBomb header.	Optional PowerFlow, header shield and any application-supported accessories.

Closed-course competition only. These packages exclude street/highway use. Spark-arrestor equipment, sound compliance, emissions requirements and permission to ride a location are separate questions. An included spark arrestor does not make an L/RL performance package road legal.

Choose RS-4 versus Q4 by the system you prefer and the importance of sound control; there is no verified head-to-head L/RL sound test here. Choose Factory 4.1 for its specified construction and layout, then confirm the insert arrangement. Packing condition and correct assembly remain important whichever system you choose.

Choose the core combination once.

ECU + Exhaust Packages

Each package below combines an ECU with a complete exhaust. Optional accessories are identified separately. All four packages are for closed-course competition and exclude street/highway use.

2019–2027 • L / RLECU + complete exhaust

Vortex X10 + Yoshimura RS-4 Package

Start here when you want the Vortex and RS-4 together: one L/RL package covering engine management and the complete exhaust.

Includes the Vortex X10 ECU and full RS-4 system. The RS-4 includes a spark arrestor; do not add a duplicate insert simply to complete the package.
Vortex provides ten fuel/ignition maps and low-, mid- and high-throttle fuel trims. Use the map sheet supplied for the actual engine, intake and exhaust.
The handlebar map switch, Twin Air PowerFlow kit and Graves block-off plate are optional selections. The P3 header shield is a separate purchase.
Closed-course competition only; not for street/highway use. Vortex ECUs cannot be canceled, returned or exchanged once shipped.

Build the Vortex + RS-4 Package

2019–2027 • L / RLECU + sound-focused exhaust

Vortex X10 + FMF Q4 / MegaBomb Package

The Vortex/FMF route for riders who value Q4 sound control alongside a complete exhaust and matched engine management.

Includes the Vortex ECU, Q4 muffler and MegaBomb header. The listed Q4 component includes a spark arrestor and quiet insert.
Match the supplied maps to your full system and intake. A quieter design does not guarantee a particular sound-test result on the finished motorcycle.
Select the optional Vortex handlebar switch or PowerFlow kit only if wanted. Both are separate from the core package; a header heat shield is also separate.
Closed-course competition only; not for street/highway use. Confirm destination requirements and the Vortex after-shipment return/cancellation terms before ordering.

Build the Vortex + Q4 Package

2019–2027 • L / RLECU + titanium-canister exhaust

Vortex X10 + FMF Factory 4.1 Package

Choose the Factory 4.1 route for its compact muffler and titanium-canister construction, with Vortex mapping in the same package.

Includes the Vortex ECU, Factory 4.1 muffler and updated MegaBomb header. Confirm the exact supplied muffler and insert configuration with the order.
The reviewed 041587 muffler has a titanium canister, carbon endcap and stainless midpipe. FMF includes its spark-arrestor screen; its quiet insert is separate.
The Vortex map switch, PowerFlow intake kit and Graves plate are optional. The ECU/exhaust bundle does not automatically include a P3 heat shield.
Closed-course competition only; not for street/highway use. Match the map sheet to the installed parts and confirm Vortex after-shipment ordering terms.

Build the Vortex + Factory 4.1 Package

2019–2027 • L / RLECU + controller + full exhaust

GET SX1 + FMF Factory 4.1 Package

A complete GET-based performance route for riders who want its handlebar control and Wi-Fi tools with the Factory 4.1/MegaBomb system.

Includes the GET SX1 ECU, SX1 Controller and SX1 Connect Wi-Fi module, plus MegaBomb header and Factory 4.1 titanium-canister muffler with carbon endcap.
The ECU arrives with two race maps from GET/Athena. Confirm the map configuration for your intake and exhaust; a quickshifter sensor is an accessory, not an included auto-shifting system.
PowerFlow and Graves options are additional selections. The standalone ECU kit is already part of this package, so do not purchase a second one.
Closed-course competition only; not for street/highway use. GET/Athena handles ECU warranty and troubleshooting; confirm its after-shipment restrictions before ordering.

Build the GET + Factory 4.1 Package

Mapping That Matches the Bike

ECU selection and setup

Start with one controller strategy. A replacement ECU, a piggyback fuel controller and a handlebar switch are different products. None should be stacked into a cart as if they were required together.

Choice	Adjustment / supplied equipment	Key check
Vortex X10	Ten maps; low/mid/high-throttle fuel trims; handlebar switch optional.	Match ECU revision and supplied map sheet to the engine, intake and full exhaust.
GET SX1	Two supplied GET/Athena maps; Controller and Connect included.	Confirm application-supported functions, intake/exhaust calibration and GET support route.
AiM Taipan alternative	Five maps described; AiM switch optional; without it the listing specifies default Map 1.	Confirm the actual map package and accessories. This is an alternative ECU, not an addition to Vortex/GET.
JD Power Surge 6X alternative	Adds/subtracts fuel in six zones with an acceleration-response adjustment.	A fuel-controller route with its own setup; not a full replacement fuel/ignition ECU.

All four listings restrict use to closed-course competition and exclude street/highway use. For Vortex, the published assumptions include a standard engine, aftermarket full system and USA intake manifold. The USA-spec intake tube is a conditional non-U.S. configuration part; a U.S. bike does not normally need another one.

Use the map sheet shipped with the ECU. The newest date in an old forum post does not identify your firmware, and a used ECU may have an unknown calibration. Before changing TPS settings, fuel trims or the engine configuration, confirm the instructions for that exact unit. Vortex’s Honda application includes Dynamic Traction Control, but button sequences and indicator patterns must come from its matching instructions.

Reference: Vortex’s CRF450L/RL application. Tell us if you are keeping the stock exhaust so the supplied map package can be checked explicitly.

Already have the right exhaust? Start here.

ECUs & Vortex Map Switch

Choose one engine-management system and match it to the actual engine, intake, exhaust and country. A map switch is an accessory to its compatible ECU.

2019–2027 • L / RLFull ECU replacement

Vortex X10 ECU

For an L/RL with the exhaust already chosen, the Vortex changes fuel and ignition management and gives you a defined map-selection route.

Ten preloaded fuel/ignition maps with three throttle-band fuel trims. The optional handlebar switch accesses the two selections defined by the supplied instructions.
Published Vortex mapping assumptions include a standard engine, aftermarket full exhaust and USA intake manifold. Confirm non-U.S. intake hardware and any engine modifications.
Keeping the stock exhaust or buying a used ECU? Confirm that its actual map package supports your configuration. Map numbers and firmware are not universal across every ECU.
Closed-course competition only; not for street/highway use. No cancellation, return or exchange once shipped. Improved control does not guarantee that every stall is cured.

Choose the Vortex X10 ECU

2019–2027 • L / RLController and Wi-Fi included

GET SX1 ECU Kit

Choose the standalone GET kit when the exhaust is already in place and you want its mapping, diagnostics and handlebar-control system.

Includes SX1 ECU, multifunction SX1 Controller and SX1 Connect. The two supplied GET/Athena race maps are described for modified exhaust/intake configurations.
The system offers GPA traction-control settings and WiGET access to supported parameters, operating data and ECU hours. Confirm functions for the exact L/RL application.
The quickshifter sensor and professional Maya programming tools are separate. An ECU purchase does not automatically include those accessories or bespoke tuning.
Closed-course competition only; not for street/highway use. No cancellation, return or exchange once shipped. GET/Athena USA handles warranty support.

Choose the GET SX1 Kit

2019–2027 • L / RLOptional Vortex accessory

Vortex Handlebar Map Switch

Bring the two supported Vortex map selections to the handlebar when you want to change engine character during a closed-course ride.

Works with the compatible Vortex ECU; it is not an ECU and does not add ten individual map buttons to the handlebar.
Use the map pair and switch behavior in the instructions supplied with your ECU. Older online map-number advice may describe a different map package.
Already selected a switch with your ECU or combo? Do not add another. Check mounting space, cable routing and full steering movement.
The current listing is closed-course only and excludes street/highway use.

Add the Vortex Map Switch

Match the exhaust and the protection around it.

Full Exhausts & Matching Heat Shields

These are exhaust-only and header-shield selections. The ECU is separate. Current listings restrict these products to closed-course use; the Factory 4.1 full-system listing also excludes public-land use.

2019–2027 • L / RLExhaust only

Yoshimura RS-4 Full Exhaust

The separate RS-4 system for an L/RL whose compatible ECU and tuning plan are already arranged.

Complete system with a tucked-in header and included spark arrestor. Its exhaust construction combines stainless components, an aluminum muffler and carbon endcap.
The ECU, map switch and PowerFlow kit are separate. Confirm the correct calibration and market-specific installation before running the changed system.
Choose the P3 shield for the RS-4 header if additional contact protection is wanted. A MegaBomb-specific shield is a different part.
Closed-course competition only; not for street/highway use. A spark arrestor does not establish road legality or guarantee a sound-test pass.

View the RS-4 Full System

2019–2027 • L / RLSound-control focus

FMF Q4 + MegaBomb Full Exhaust

A complete Q4 muffler and MegaBomb header combination for the rider who has already selected compatible engine management.

The Q4 uses an aluminum canister and stainless components. The reviewed muffler includes a spark arrestor and quiet insert.
The full system includes both muffler and header. Do not assume a separately sourced muffler will connect to the OEM L/RL header without a specific fit check.
Service the packing and spark-arrestor screen as instructed. Exhaust condition, test method and riding location affect the finished sound result.
ECU and P3 shield are separate. Closed-course competition only; not for street/highway use.

View the Q4 / MegaBomb System

2019–2027 • L / RLCompact titanium-canister option

FMF Factory 4.1 + MegaBomb Full Exhaust

The Factory 4.1 full-system choice when you already have suitable tuning and want its compact muffler layout.

Pairs MegaBomb header 041577 with Factory 4.1 muffler 041587. The muffler has a titanium canister, carbon endcap and stainless midpipe.
FMF lists the spark-arrestor screen as included with 041587. Its quiet insert is sold separately; confirm the delivered configuration before a sound-regulated event.
ECU, header shield and custom tuning are separate unless purchased in a specifically described bundle.
The current L/RL listing restricts this system to closed-course competition and says not for use on public land. It is not a street/highway selection.

View the Factory 4.1 Full System

2019–2027 • L / RLRS-4 header-specific

P3 Heat Shield for Yoshimura RS-4

Add a contact barrier around the RS-4 head pipe when the build needs protection for riding gear and the header.

Molded carbon-fiber/fiberglass composite shield for the RS-4 header identified with system 224500D320.
This is a separate accessory, not an included item in the featured ECU/exhaust combos. Check mounting hardware and clearance with guards, boots and bodywork.
It reduces direct exposure; the shield and exhaust still need appropriate hot-surface clearance. It is not the FMF MegaBomb version.
The current listing is closed-course only and excludes street/highway use.

Match the RS-4 Heat Shield

2019–2027 • L / RLFor header 041577

P3 Heat Shield for FMF MegaBomb

The matching P3 shield for the MegaBomb header used in the featured FMF full systems.

Fits the specified FMF MegaBomb 041577 head pipe. Do not order it for Yoshimura, another brand or an unconfirmed header revision.
Carbon-fiber/fiberglass construction adds a barrier against riding-gear contact and impacts. Confirm installation hardware and surrounding clearances.
Sold separately from the featured ECU/exhaust combos. No cool-to-touch or damage-proof result is promised.
The current listing is closed-course only and excludes street/highway use.

Match the MegaBomb Heat Shield

Insert references: Yoshimura 224500D320, FMF Q4 041578 and FMF Factory 4.1 041587. Manufacturer component pages use CRF450X applications; buy the reviewed complete L/RL selection and retain its L/RL use restrictions.

Know what is already behind the filter.

Intake Configuration

The PowerFlow system and USA-spec air-cleaner tube do different jobs. Identify the existing cage, filter and country-specific intake before choosing either.

2019–2027 • L / RLCage + filter + bolt

Twin Air PowerFlow Intake Kit

A coordinated intake change for a closed-course performance build, with its own cage and matching filter system.

Includes a billet aluminum filter cage, pre-oiled backfire-resistant PowerFlow filter and billet airbox bolt.
Replaces the stock cage/backfire-screen arrangement. Use the filter intended for this system; a stock-cage replacement filter is not automatically interchangeable.
A wash cover is optional and must be removed before starting. Keep a filter-service plan and have the ECU configuration reviewed with the complete intake/exhaust setup.
Already chosen PowerFlow in a combo’s options? Do not buy it twice. Closed-course only; not for street/highway use.

Add the PowerFlow Kit

L / RL • market check requiredConditional market conversion

Honda USA-Spec Air-Cleaner Tube

A configuration-specific part to discuss when a non-U.S. motorcycle is being matched to an ECU map that assumes the USA intake.

This is the Honda USA-spec intake tube. The listing offers it for supported non-U.S. conversions and says a U.S.-purchased bike does not normally need it.
Identify the country, model code and tube already installed. A country label alone is not a reason to buy a duplicate or assume every conversion is supported.
It is not an air filter, PowerFlow cage or fuel controller. Confirm the complete intake/calibration arrangement and intended-use requirements before ordering.
OEM parts cannot be canceled, returned or exchanged once shipped.

Check the USA-Spec Intake Tube

Use the Showa Platform Well

Suspension before more accessories

The L/RL already has adjustable Showa suspension. First establish condition, correct spring support and a repeatable setup. Then decide whether the limitation needs springs, damping work or a different combination.

What you find	Useful route	Complete the setup
Excessive sag or poor support	Select fork and shock springs for the rider and normal equipment.	More preload is not a higher spring rate. Measure both rider sag and free sag, then review the result.
Support is suitable but damping is limiting	Review servicing and available settings; consider fork-valve work.	A Gold Valve kit needs professional configuration and installation. It does not include every suspension-service item.
Both ends need spring support and fork damping work	Race Tech spring / fork-valve package.	Includes fork springs, rear spring and fork Gold Valve components. It does not supply a complete rear shock or a rear Gold Valve kit.
Steering deflection is the main complaint	Check tires, alignment, bearings, sag and stance before a damper.	The Scotts SUB kit has specific bar/clamp requirements and changes bar position.
Load changes between short rides and travel	Record both real load configurations.	Choose a workable setup within the motorcycle’s rating; heavier springs do not raise that rating.

Honda’s current hosted 2019 manual gives 105 mm as its stock race-sag reference; the nearby 100 mm figure is a worked measurement example. Use the correct manual and your suspension builder’s targets for the actual year and modified components. Honda’s 2027 fork-oil change is another reason to keep service specifications year-specific.

Keep a setup record. Write down rider/gear/load, spring choices, sag and the current damping settings before changing them. Adjust one variable, ride a familiar section and record the effect. Tell us whether your priority is rocks and roots, faster open terrain or a mixture; the same spring rate does not define the whole tune.

Factory reference: 2019 Honda manual, suspension chapter.

Build support and control into the chassis.

Suspension & Steering

The featured Race Tech package upgrades the existing suspension with springs and fork valving. It is not a complete fork-and-shock replacement. Installation, servicing and setup need to be planned.

2019–2027 CRF450L/RLMatched springs and fork valving

Race Tech Suspension Upgrade Package

Keep the capable Showa chassis and build its support around your weight, terrain and normal riding load.

Includes Race Tech fork springs, a rear shock spring and a Gold Valve fork kit for the existing suspension.
Enter rider weight without gear, age and skill; describe your tank, luggage, racks and any lowering changes.
Have a trained suspension professional install and set up the components; replacement fork and shock assemblies are not included.
Custom setup: no cancellation, return or exchange once shipped. Do not add duplicate springs or a second fork-valve kit.

Build Your Race Tech Package

2019–2027 CRF450L/RLStart with the right spring rate

Race Tech Fork Springs

A spring change makes sense when setup measurements show the front needs different support for your rider weight and pace.

Choose the rate with your suspension technician using rider weight, gear, terrain and the motorcycle’s regular load.
Chrome-silicon springs are shot-peened and heat-treated; the original fork remains in use.
These springs are already included in the Race Tech suspension package. Damping changes are a separate decision.
No cancellation, return or exchange once shipped; settle the rate before ordering.

Choose Fork Springs

2019–2027 CRF450L/RLSupport your actual riding load

Race Tech Rear Shock Spring

Match the rear spring to the load you really carry so the shock can be set up with appropriate sag and preload.

Choose the spring rate for rider, gear and luggage together; a stiffer spring is not automatically the right answer.
Retains the original shock damper. A spring change does not increase Honda’s maximum weight capacity.
Already included in the Race Tech suspension package; add separately only when following a component-by-component plan.
No return or exchange once shipped. Confirm the rate and any lowering configuration first.

Choose a Rear Spring

2019–2027 CRF450L/RLTune damping to the terrain

Race Tech Gold Valve Fork Kit

When fresh oil, correct springs and external adjustment still leave a damping compromise, a tailored revalve is the next conversation.

Includes Gold Valve pistons, valving shims, online instructions and Digital Valving Search access.
The valving setup is selected for rider weight, ability and conditions; have a qualified suspension technician perform the work.
This is an internal fork kit. Springs, a rear-shock revalve and installation labor are separate.
Already part of the Race Tech suspension package; avoid ordering it twice.

View the Gold Valve Fork Kit

2019–2027 • stock clamps, 1-1/8-inch barsPlan the whole cockpit

Scotts SUB Mount Stabilizer Kit

Add adjustable steering damping for demanding terrain after tires, bearings and suspension are in good condition and properly set up.

This configuration requires stock triple clamps and 1-1/8-inch handlebars; it does not directly fit the stock 7/8-inch bars.
The SUB mount raises the bars 25 mm and offers positions 3 mm or 13 mm forward of stock.
Coordinate bar bend, cable slack, handguard mounts, tank and screen clearance before choosing the kit.
Mounting hardware and illustrated instructions are included. The oversized adjuster knob shown in some photos is optional.

Plan a Scotts Stabilizer Setup

Comfort and Control Together

Choose the seat, bars and ground reach

A lower seat can help at stops but tighten the seated knee angle. A taller or wider seat may improve support while changing reach or movement. Evaluate the whole riding position in boots and normal gear.

Choice	Why consider it	What to check
Comfort complete seat	Broader seated support with Standard, Low, Tall and XL options in the current selector.	XL is standard height only. Cover and color choices may have their own height restrictions.
Element complete seat	Weather-focused cover construction with Standard, Low and Tall selections.	Identify height and cover before ordering; it is a complete seat, not just a cover.
Low seat	Improves seated reach without lowering the chassis itself.	Check knee room, pressure and real reach before adding chassis lowering.
Tall / XL	Tall changes seated height; XL changes width/support at standard height.	Tall and XL are not the same option. Neither guarantees comfort for every rider.
Lowering link / suspension work	A chassis-height route if seat changes and proper sag are insufficient.	Review geometry, tire and ground clearance, suspension movement and side-stand angle.
Bars, pegs, handguards and screen	Improve standing and seated control or reduce wind pressure.	Check cable length, throttle return and full-lock clearance as a complete cockpit.

Do not lower the bike by guessing at fork position. Honda’s referenced stock setup locates the fork at its specified groove; it is not a generic slide-the-forks adjustment. Have a professional plan the front/rear relationship for a lowering link or internal lowering, and do not stack lowering methods without a separate review.

With wind protection, identify the speed and posture where turbulence occurs, then change one factor at a time. A taller screen is not a guaranteed cure. Seat, bars and screen position can all change the air reaching the helmet.

Make the riding position work all day.

Seats, Controls & Wind Protection

Choose seat shape and height around seated comfort, standing movement and ground reach. Check the complete bar, handguard, screen and control arrangement at full steering lock.

2019–2027 CRF450L/RLComfort, Low, Tall or XL

Seat Concepts Complete Comfort Seat

For riders spending more time seated, a wider support area and a carefully chosen height can change the feel of a long day.

Complete bolt-on seat with Seat Concepts foam; Standard, Low, Tall and standard-height XL choices are available.
Low is approximately 1 inch lower than stock. XL adds width and is offered only at standard height.
Choose side/top materials separately from height; the Cobalt Blue/Blue Wire option is standard-height only.
Required shipping applies. Made-to-order seats cannot be changed, canceled or returned once ordered; confirm your choices carefully.

Build Your Comfort Seat

2019–2027 CRF450L/RLGrip and comfort for wet rides

Seat Concepts Element Complete Seat

Choose Element when a grippy riding surface and added protection against water reaching the foam suit your riding better than a smoother cover.

Complete seat with Comfort-family foam, gripper material and four traction ribs at the rear.
Seams are sealed inside and the foam has an additional water barrier; choose Standard, Low or Tall height.
Cover choices include red with white ribs, black with red ribs, or black with black ribs.
Required shipping applies. Made-to-order seats cannot be changed, canceled or returned once ordered.

Choose an Element Seat

CRF450L/RL • confirm the supplied camMore deliberate throttle input

G2 Tamer Throttle Tube

A different throttle cam can make small wrist movements easier to manage without changing the engine’s ECU mapping.

Machined aluminum tube with Delrin bushings works inside the stock throttle housing with the stock cables.
Confirm the CRF450L/RL application and supplied cam before ordering; cam ratios vary by application.
Grip is separate. A removable end cap accommodates compatible wraparound handguards.
Set cable free play and verify smooth return at full steering lock; this does not repair a mechanical or fueling fault.

View the G2 Tamer

2019–2027 CRF450L/RLBrake and clutch together

Zeta CP Pivot Lever Set

Refresh both lever contact points with a matching folding design and position them for comfortable seated and standing control.

Includes clutch and front-brake levers with CNC-machined adapters; choose red or black.
Outward pivot action helps reduce lever damage in a fall, while handguards add another layer of protection.
Confirm clearance with handguards and any changed perch, and check correct free play and switch operation after installation.

Choose Your Lever Set

2019–2027 CRF450L/RLRubber comfort or trail grip

Zeta Adventure Footpegs

Set up the foot contact area for the mix of pavement and dirt in your ride with removable rubber covers and stainless grip blades.

Black kit includes both sides, aluminum bases, stainless blades, rubber covers and mounting fasteners.
Uses a combination of steel, aluminum and stainless steel; each side weighs approximately 485 g.
Check brake and shifter access in your riding boots. These are not presented as a lowering kit.

View Adventure Footpegs

2019–2027 • one side per kitChoose two for a complete pair

Doubletake Adventure 6.0 Mirror Kit

Position the mirror where you can see past your shoulders and luggage, then readjust it to suit your cockpit.

Each kit supplies one Adventure mirror with a 6-inch arm and base components; order quantity two for both sides.
A reinforced Zytel body surrounds a convex mirror lens, with adjustable ball mounting for positioning.
Verify visibility and full steering movement after fitting; retain working mirrors for the road sections of your ride.

Choose Your Mirror Quantity

CRF450L/RL • select compatible mountsBuild a complete handguard setup

Zeta Pro Armor Handguards

Protect levers and hands with a mounting choice that works with your actual bars, risers and steering-damper layout.

Handguard bars include bumpers and bar-end adapters; compatible inner mounts are required unless you already own them.
Choose the correct 7/8-inch or 1-1/8-inch swivel mount, or the CRF450L/RL-specific ZE71-1823 side mount.
Front and side mounts are not recommended with bar risers. Verify bar-end fit and free throttle return.
XC shields and integrated LED inserts are optional; signal wiring and flasher requirements depend on the final setup.

Configure Your Handguards

2019–2027 • braced 7/8-inch bars onlyAdjustable wind protection

Zeta Explorer Windscreen

Tune screen height and angle for longer road transfers while keeping the bar and mounting restrictions part of your cockpit plan.

This screen fits compatible 7/8-inch handlebars with a crossbar; it is not the screen for an oversized-bar conversion.
Includes the brace adapter and an integrated mobile-device mounting bar; height and tilt are adjustable.
The handlebar pad cannot remain installed. Confirm handguard, cable and full-lock clearance before riding.
Test the screen position at your normal riding speed; rider height, helmet and posture all affect airflow.

Check the Explorer Screen Fit

For the CRF450L/RL-specific Zeta side-mount option, check these side mounts. Match the mount to the Pro Armor configuration and the stock or modified bar position; do not select a generic side mount by appearance alone.

Improve reach with a complete geometry plan.

Lowering & Side-Stand Fit

Use correct sag first. If a low seat is insufficient, plan a lowering approach with a suspension professional and review suspension movement, tire clearance and stand angle.

2019–2027 • choose the link versionChoose the smallest useful change

Kouba Lowering Link

When correct sag and seat choice still leave the bike too tall, a carefully selected link can improve reach to the ground.

CRF17-1 lowers the rear approximately 0.5 inch; CRF17-2 lowers it approximately 1.5 inches.
The 2.5-inch CRF17-3 is specifically for flat-track/TT use, not a default technical-trail recommendation.
A rear link changes suspension leverage and chassis balance; have a specialist address sag, front balance and tire clearance.
Check side-stand length after setup. Do not combine multiple lowering methods without a coordinated suspension plan.

Choose a Kouba Link

2019–2027 CRF450L/RLSet the parked lean correctly

T-Rex Adjustable Kickstand

A lowered bike needs a side stand that gives it a stable lean once the rider fit, tires and suspension setup are finished.

Steel construction with a larger foot; adjustment extends roughly 1 inch over stock or shortens up to 3 inches.
Compatible with the kickstand switch; retain and check the safety-switch function after fitting.
Set the length for the motorcycle’s actual height and load, then verify stable parking on suitable ground.

View the Adjustable Kickstand

Protect the parts that can stop a ride.

Protection & Chain Management

Choose coverage around the terrain, exhaust and fuel tank. A skid plate, radiator guard and chain guide are distinct pieces; none guarantees that a fall leaves the bike undamaged.

2019–2027 CRF450L/RLEngine and linkage coverage

T.M. Designworks Full Coverage Skid Plate

A useful trail foundation when rocks and logs put the underside of the motorcycle and the linkage in the line of impact.

Composite skid plate includes an integrated linkage guard and replaceable mounting hardware.
Its impact-absorbing plastic uses a silicone additive to help it slide across obstacles.
Choose red or black, and confirm clearance with your header, any lowering link and the rest of your protection.
Inspect the plate, fasteners and linkage clearance after installation and after significant impacts.

View Full Coverage Protection

2019–2027 CRF450L/RLA dedicated underside guard

Flatland Racing Skid Plate

Add model-specific protection beneath the engine as part of a simple trail build.

Designed for the CRF450L/RL with a bolt-on mounting arrangement.
Check clearance against the exhaust header and any other protection fitted to your motorcycle.
Choose one primary skid plate, and plan how you will access the drain and filter during routine service.

View the Flatland Skid Plate

2019–2027 • horn relocation requiredKnow the installation commitment

Bullet Proof Designs Radiator Guards

Protect the radiator faces and sides with billet guards, while accounting for the tighter installation space on this model.

Machined from 6061-T6 aluminum; choose silver or black.
Installation requires relocating the horn and its bracket away from the radiator-guard face.
Confirm compatibility with your exact fuel tank and shroud arrangement before opening the package.
These guards cannot be returned once removed from their packaging.

Review Radiator Guard Fitment

2019–2027 CRF450L/RLProtection at the front sprocket

Zeta Case Saver and Sprocket Cover

Add a purpose-made cover and case saver while keeping chain condition, adjustment and clearance at the center of drivetrain care.

Combines a pressed 2-mm aluminum case saver with an A6061 aluminum drive cover.
Black anodized finish keeps the assembly compact around the front sprocket.
Verify clearance with the selected sprocket and narrow chain; a guard does not make an oversized chain fit.

View the Case Saver

2019–2027 • compatible replacement sprocketCheck the OEM sprocket exclusion

T.M. Designworks Edition 2 Chain Guide

Pair an impact-tolerant rear guide with a compatible replacement sprocket when refreshing the trail drivetrain.

Does not work with the OEM CRF450L/RL rear sprocket that has rubber dampeners around its teeth.
Uses a plastic formulation designed to flex and return after an impact; red and black choices are available.
Confirm the chosen rear sprocket and guide clearance together, then inspect alignment and wear during chain service.

Check Chain Guide Compatibility

Check the rear sprocket before ordering the T.M. chain guide. The featured guide excludes the rubber-damped OEM rear sprocket. Also confirm radiator-guard, fuel-tank and horn placement together; individual model fitment does not prove that every accessory clears every other one.

Range You Can Plan Around

Fuel, luggage and the 220 lb load limit

A longer-range tank and a rear rack change the finished motorcycle. Choose fuel stops and packing first, then buy the hardware needed to support that plan.

Tank option	Nominal capacity	Fit and range decision
Stock Honda tank	2.0 US gal in the 2027 U.S. reference	Retain for a stock road-equipped build; plan stops from measured economy and a fuel margin.
IMS 3 gallon	3.0 US gal	Black or natural. Use IMS-supplied shroud hardware and confirm other accessory clearances.
IMS 4.5 gallon	4.5 US gal	The listing requires trimming the inner red/black shroud standoffs and fitting the supplied bolts. Decide whether that installation and size suit the ride.
IMS 5.7 gallon	5.7 US gal	IMS warns roughly 1–2 gallons can remain in the wings, depending on terrain and fuel movement. Nominal capacity is not dependable usable fuel.
Nomad 20-liter alternative	20 L, approximately 5.3 US gal	Includes radiator guards and mounting hardware; transfers the fuel pump. Confirm pickup behavior, accessory clearance and current ground-shipping arrangements.

All featured IMS and Nomad tank listings require closed-course-only acceptance and exclude street/highway use. All three IMS sizes specify their supplied shroud bolts/washers instead of OEM bolts. The 3-gallon dry-break version is a separate configuration and excludes both receiver 218385 and screw-cap adapter 218399; arrange the required hardware for the selected filling system.

Do not turn the 5.7-gallon label into guaranteed mileage. The wing-fuel limitation is described by IMS itself. It also does not establish a guaranteed “3.7–4.7 usable gallons.” Measure the actual setup, terrain and pickup behavior, then keep a fuel margin.

Decision	Practical approach
Fuel-stop distance	Use a measured usable-fuel budget after the chosen margin, multiplied by measured economy in similar conditions. Example: a chosen 2.4 US gal planning budget × 45 mpg = 108 miles. These are illustrative inputs, not a tank-specific range guarantee.
Maximum load	Honda’s documented 220 lb / 100 kg limit includes the rider, cargo and accessories. Count riding gear and added equipment; it is not a luggage-only allowance. The motorcycle is operator-only.
Packing position	Keep cargo small, secure and close to the center. Check rearward leverage and clearance at suspension compression, not just with the bike on a stand.
Additional fuel and protection	Account for the added tank, carried fuel and guards in the final weight. A larger spring or rack does not increase Honda’s rated capacity.
Navigation and power	Keep a backup route and communications plan. Confirm connector function, circuit capacity, fuse protection and total demand before adding powered equipment.
Trip preparation	Complete work early, ride locally with the finished load, inspect fasteners/clearances and plan the service that will fall due during the trip.

Load references: 2026 Honda owner manual, loading/specifications and 2019 Honda manual, load-limit scope. Follow your own year and market manual if different.

Choose usable range and a manageable load.

IMS Fuel-Tank Choices

All featured IMS tank listings currently restrict use to closed-course competition and exclude street/highway use. Use the required IMS mounting hardware, and confirm clearance with guards, steering equipment and bodywork.

2019–2027 • closed-course use onlyA moderate capacity increase

IMS 3-Gallon Fuel Tank

The 3-gallon option suits a competition build that needs more fuel capacity without moving directly to the largest tank.

Black tank with mounting hardware. Use the supplied IMS shroud bolts and washers, not the OEM shroud bolts; confirm the cap version.
Plan fuel stops from measured consumption and a reserve, then include the additional fuel load in suspension and weight planning.
Oversize shipping: no express service or PO-box delivery.
Sold for closed-course racing use only; not legal for street or highway use.

View the IMS 3-Gallon Tank

2019–2027 • closed-course use onlyMore fuel, with shroud modification

IMS 4.5-Gallon Fuel Tank

Choose this capacity for a competition fuel plan that justifies the added volume, weight and required bodywork changes.

Inner red and black shroud stand-offs must be completely trimmed or removed on both sides to fit the tank.
Use the supplied shroud hardware, not OEM shroud bolts. Black, natural, red and white choices are offered.
Confirm tank, guards and steering clearance before modifying parts. No express shipping or PO-box delivery.
Sold for closed-course racing use only; not legal for street or highway use.

Review the IMS 4.5-Gallon Tank

2019–2027 • closed-course use onlyCapacity for a defined fuel plan

IMS 5.7-Gallon Fuel Tank

The largest IMS option belongs on a build whose fuel demand makes the extra bulk and loaded weight worthwhile.

Nominal capacity is not dependable usable fuel: IMS says roughly 1–2 gallons may remain in the wings, depending on terrain and fuel movement.
Use the supplied shroud bolts and washers, not OEM shroud bolts. Choose black, natural or red and confirm accessory clearance.
Plan from verified usable fuel and a reserve. No express shipping or PO-box delivery.
Sold for closed-course racing use only; not legal for street or highway use.

Review the IMS 5.7-Gallon Tank

Keep equipment secure and the cockpit useful.

Luggage, Power & Navigation

Stay within the motorcycle’s total load rating and any lower accessory limit. Rack-only, power connector, assembled dashboard and GPS are separate selections with different contents.

2019–2027 CRF450L/RLA practical place for a small load

CRF’s Only Rear Rack

Secure a compact tail bag or compatible fuel-pack mount while keeping access to the seat.

Steel rack measures approximately 10 inches wide by 12 inches long; stainless mounting hardware is included.
Direct Rotopax mounting provision supports a 1-gallon pack; the mount and container are purchased separately.
Larger Rotopax packs are not recommended. Keep luggage compact and within the motorcycle’s remaining weight allowance.
The seat can be removed with the rack fitted; check attachment points and straps during the ride.

View the CRF’s Only Rear Rack

2019–2027 • left and right pairKeep soft bags supported

CRF’s Only Side Luggage Racks

Give soft luggage a supported position away from rear plastics and the exhaust, with more usable tie-down points.

Includes left and right steel racks with mounting hardware; each side weighs approximately 2 lb.
The tail rack is not included. Confirm your bag, exhaust and rear-rack combination before ordering.
The left rack must be removed to open the factory lockable storage hatch.
Check bag-to-exhaust clearance when fully packed and count both racks in your accessory-weight budget.

View the Side Rack Pair

2019–2027 CRF450L/RLConnect to the factory AUX port

12oClockLabs AUX Power Connector Kit

Start a tidy accessory-power installation with the correct plug instead of cutting into the main harness.

Includes a 32-inch harness with pre-attached wires and terminals for the factory AUX connector.
This is a connection harness, not a USB charger or a charging-output upgrade.
Plan device power requirements, fuse protection and cable routing; avoid adding it when your chosen accessory already supplies this connection.

View the AUX Connector Kit

2019–2027 • closed-course use onlyChoose the correct gauge cutout

Assembled USB and AUX Dashboard

Bring USB charging and a voltage display behind the headlight shroud with a dashboard configured for your competition cockpit.

Includes dual USB charging, voltage display, AUX connection, mounting bolts and grommets.
Choose a blank panel or the correct first- or second-generation Advanced Mini Gauge cutout; the gauge itself is separate.
Match the panel to the gauge you actually own and check screen, cable and steering clearance. No extra AUX harness is needed for this connection.
Sold for closed-course racing use only; not legal for street or highway use.

Configure the Assembled Dashboard

2019–2027 • plan cockpit mountingNavigation and group awareness

Trail Tech Voyager Pro4 MOTO Kit

Use a dedicated navigation display when route following, ride logging and staying aware of compatible riders matter more than another phone mount.

Includes the Pro4 unit, quick-release dock, motorcycle mounting hardware, Buddy Tracking antenna, power lead, tach lead and universal temperature sensor.
The 4.3-inch display supports route files and ride data; plan sensor placement, protected wiring and full-lock clearance.
Buddy Tracking uses radio and GPS with compatible units without relying on cell service; terrain and range still affect contact.
Carry a separate emergency communication plan. Buddy Tracking is not satellite rescue or a guarantee that the group stays connected.

View the Voyager Pro4 MOTO Kit

Keep the Information Useful

Electrical equipment and gauge compatibility

The stock bike already has road lighting and a lithium battery. Choose additional equipment by the missing function, and verify the full power and mounting plan.

Equipment	Check before ordering
Auxiliary connector	A connector is not automatically a USB charger, fuse block or higher-capacity circuit. Confirm the load and protection required for the device.
Assembled dashboard	The featured dash includes dual USB/voltage display and its AUX connection. Blank, first-generation AMG and second-generation AMG cutouts are different selections; the gauge is not included.
Existing Advanced Mini Gauge	Confirm its generation and the ECU-specific version/configuration, especially when changing from OEM to Vortex, GET or AiM. A dashboard cutout does not establish electronic compatibility. Contact us to arrange the matching gauge configuration.
GPS	Confirm mounting and included sensors/power cable. Verify each feature against the actual kit and plan independent communication rather than assuming every map display supplies it.
Headlight conversion	Check beam pattern, supply demand, mounting and required road or event approval. More light output does not automatically create a compliant low beam.
Tail and indicators	Identify integrated versus separate signals and any optional flasher. Check plate illumination, tire/bag clearance and current product-use restrictions.
Battery	Compare the candidate with the actual OEM lithium battery, not only a lead-acid reference. Use the correct lithium-compatible charging instructions.

Keep electrical troubleshooting specific. Inspect battery condition, terminals, fuses, connectors and the recent change before blaming the ECU. Follow the motorcycle’s diagnostic process for fault indications and charging concerns. Bypassing an interlock is not the guide’s starting solution to a no-start problem.

Check the beam, wiring and intended use.

Lighting & Tail Options

Both featured lighting listings require closed-course-only acceptance and exclude street/highway use. A compact assembly or brighter beam is not evidence of road approval.

2019–2027 • closed-course use onlyTwo light patterns, one switch

Baja Designs Squadron Pro / S2 Kit

For permitted closed-course riding after dark, this kit combines closer-range lighting with a second beam aimed farther ahead.

Includes a Squadron Pro, an S2 Sport, mounting bracket and the CRF450L/RL adapter.
Uses the factory wiring and high/low switch: S2 only on low, with both lights operating on high.
Set beam aim and verify mounting, wiring and available electrical capacity with all accessories operating.
Sold for closed-course racing use only; not legal for street or highway use. High/low operation does not establish road approval.

View the Baja Designs Light Kit

2019–2027 • closed-course use onlyA compact competition tail assembly

12oClockLabs Integrated Tail Light Kit

Combine tail, brake and plate lighting with a compact mounting arrangement for your permitted closed-course build.

Includes the LED assembly, removable plate bracket, mounting hardware and rear signal-hole block-off plates.
Use integrated signals or retain separate signals; programmable signal patterns and switchable brake pulsing are built in.
A fixed-rate turn-signal flasher is optional. Select it when needed for the final signal configuration.
Sold for closed-course racing use only; not legal for street or highway use.

Configure the 12oClockLabs Tail Kit

Gearing With a Clear Purpose

Balance technical control and connecting speed

Honda’s 2027 U.S. reference is 13/51. A larger rear sprocket or smaller front sprocket raises the final ratio, engine rpm and rear-wheel leverage at the same road speed. Taller gearing does the reverse; available power, wind, terrain and load still determine the result.

Front / rear	Final ratio	RPM change at the same speed	Tradeoff to assess
13 / 51	3.923	Reference	Factory reference.
13 / 49	3.769	-3.9%	Slightly taller; evaluate low-speed control.
13 / 48	3.692	-5.9%	Taller again; assess clutch demand in technical sections.
14 / 51	3.643	-7.1%	Taller front-sprocket route; check case-saver and chain clearance.
13 / 53	4.077	+3.9%	Lower gearing; evaluate connecting-road rpm and chain length.

Calculated with unchanged tire circumference and transmission gear. These are rpm relationships, not horsepower, acceleration, economy or top-speed promises. Check the actual available sprockets, chain length, axle position, slider and guard clearances before ordering; a table row is not a preconfigured kit.

Gearing does not drive this speed sensor. Honda’s handbook shows the sensor at the front wheel. Changing only sprockets does not change its road-speed relationship. Check calibration for measured error or a change to front-wheel/tire rolling circumference, such as a supermoto conversion; do not buy a SpeedoDRD merely because you changed the rear sprocket.

The handbook’s chain figure uses an illustrated lifted-chain measurement from the swingarm at a specific point, not generic free up/down slack. Follow that diagram and the prescribed check conditions. Do not transfer a bare chain-slack number from a different CRF. Source: Honda CRF450RL Off-Road Handbook, drive-chain and front-wheel sections.

Choose the ratio and tire around the ride.

Final Drive, Tires & Calibration

Check chain length, sprocket/guide clearance and actual wheel size. The L/RL reads road speed at the front wheel; gearing alone is not a reason to buy a calibrator.

2019–2027 CRF450L/RLChoose gearing and chain together

Premium Chain and Sprocket Kit

Refresh the drivetrain as a matched set, using the narrow chain this chassis needs and a ratio selected for your riding.

Includes Renthal front and hybrid rear sprockets, a narrow DID ERVT 520 X-ring chain supplied at 120 links, and six steel sprocket bolts.
Choose a 13T or 14T front and 48T, 49T, 50T or 51T rear; rear colors are silver, red or black.
Installed chain length depends on the combination. Verify case, guide and sprocket clearance and use the correct joining procedure.
Sprocket changes alone do not require speedometer recalibration on this front-wheel-sensing model.

Build Your Chain and Sprocket Kit

2019–2027 • measured speed errorCalibrate for the front-wheel signal

12oClockLabs SpeedoDRD Calibrator

Consider calibration when a front-tire or wheel change produces a measured display error, including a properly planned supermoto conversion.

The CRF450L/RL reads speed from the front wheel, so sprocket changes alone do not cause a gearing-related speed error.
This model-specific unit provides ratio-based correction for compatible MPH or KPH displays.
Measure the actual error, follow the calibrator instructions and verify the result against a suitable reference.
Correction affects the signal going forward; it does not rewrite mileage already stored in the odometer.

View the SpeedoDRD Calibrator

90/90-21 front • 120/90-18 rearAn off-road-focused dual-sport choice

Dunlop D606 Front and Rear Tire Combo

Choose tread for the dirt you actually ride, while retaining tire specifications suitable for the road portions of the trip.

Includes a 90/90-21 front and 120/90-18 rear D606, with an aggressive DOT dual-sport tread pattern.
These sizes differ from Honda’s stock dimensions; confirm rim fit, load/speed requirements and clearance before ordering.
Tubes and other wheel-service parts are separate. Check whether the changed front rolling circumference affects indicated speed.
No cancellation, return or exchange once shipped. Tires cannot ship by express service or to PO boxes.

Review the D606 Tire Combo

Match the compound as well as the axle.

Brake-Pad Choices

The featured front and rear pads are separate performance-oriented selections. Use the correct compound for temperature and riding conditions, and inspect discs, calipers and fluid service.

2019–2027 • front brake, racing compoundFor demanding, higher-temperature braking

Braking CM46 Sintered Front Pads

Choose this full-race compound for aggressive use that brings the brakes into its intended operating conditions.

CM46 sintered-metal front pads are intended for racing and aggressive riding, with performance focused on higher temperatures.
Match the compound to your use; these are not the default choice for a commuter seeking cold-weather, low-speed braking feel.
Front pads only. Inspect rotor condition, follow the required bedding procedure and evaluate rear-pad needs separately.

Review CM46 Front Brake Pads

2019–2027 • rear brake onlyRefresh braking before wear becomes a problem

Galfer MX Pro Rear Brake Pads

Replace worn rear pads as part of a brake inspection that also considers rotor condition, fluid and caliper movement.

Rear-brake pad application for the CRF450L/RL; this is not a front-and-rear brake kit.
Uses a ceramic-composite-containing compound designed to manage heat and recovery during repeated braking.
Check rotor condition and pad compatibility, then install and bed in the pads according to the manufacturer’s instructions.

View Galfer Rear Brake Pads

Separate engagement from engine response.

Clutch & Engine-Character Choices

Manual TorqDrive, RadiusX, RadiusCX and a flywheel weight change different aspects of the ride. Choose the behavior you need; an auto clutch still requires manual gear changes and correct setup.

2019–2027 • L / RLMechanical engine-character change

Steahly 7 oz Flywheel Weight

Add rotational inertia when slower, more deliberate engine response would help in technical terrain.

Adds a 7 oz ring to the stock flywheel. It can make low-speed delivery easier to manage; it does not add horsepower or change fuel/ignition maps.
Includes the weight ring, fitting tool, replacement cam-chain-guide bolt, bushing and instructions. A proper flywheel puller and normal service tools are still needed.
The ring uses a permanent interference fit after rotor removal. Plan installation with a qualified technician if this work is unfamiliar.
This and an auto clutch address different aspects of control. Neither replaces diagnosis of poor starting, fuel delivery, clutch adjustment or other faults.

Explore the Flywheel-Weight Option

2019–2027 CRF450L/RLAutomatic engagement, manual shifting

Rekluse RadiusX 4.0 Auto Clutch

Consider automatic clutch engagement when low-speed clutch workload is a bigger issue than the need for a complete billet clutch assembly.

Uses EXP 4.0 technology with rolling-contact wedges and revised friction surfaces for the auto-clutch function.
Clutch cover is not included. Confirm the exact installation components and cover requirements before ordering.
You still select the gears. Follow Rekluse’s model-specific setup and Free Play Gain checks to maintain correct operation.
Choose RadiusX, RadiusCX or a manual-clutch route as alternatives; do not stack complete clutch systems in the cart.

Explore RadiusX 4.0

2019–2027 CRF450L/RLThe complete auto-clutch route

Rekluse RadiusCX 4.0 Auto Clutch

Choose RadiusCX when you want automatic engagement together with the billet clutch components and cover supplied in the complete system.

Includes EXP 4.0, TorqDrive technology, billet Core inner hub and pressure plate, basket sleeves and a clutch cover.
Retains manual clutch-lever override; the rider continues to change gears.
Install and adjust to Rekluse’s CRF450L/RL instructions, including Free Play Gain checks as the clutch warms and wears.
Do not add a second clutch cover or the standalone OEM-component TorqDrive pack as required companion purchases.

Explore RadiusCX 4.0

2019–2027 • OEM clutch componentsKeep full manual clutch control

Rekluse TorqDrive Manual Clutch Pack

Refresh the clutch pack with a higher-capacity friction design while keeping a conventional manual-clutch riding experience.

Designed around OEM clutch components, with thin friction-disc technology and basket sleeves.
This pack does not add automatic engagement and does not create additional engine horsepower.
Not a replacement pack for RadiusX, RadiusCX or Core Manual TorqDrive systems.
Inspect the existing basket, hub and related wear parts, then follow the correct model-specific installation and adjustment instructions.

View the Manual TorqDrive Pack

An auto clutch does not hold the bike in gear like an engaged conventional clutch when the engine is stopped. Follow the installed system’s parking instructions and use secure braking/support. Check free play gain as prescribed; the rider still selects every gear. Do not combine RadiusX, RadiusCX and a manual TorqDrive pack as though they were complementary replacement parts.

Ownership Is Part of the Build

Maintenance that suits the way you ride

The L/RL rewards disciplined oil, filter and inspection work. Honda provides separate on-road and off-road schedules. Track mileage, calendar time and off-road hours, and apply the relevant instructions for the actual use and conditions.

Service item	On-road schedule	Off-road schedule / condition
Engine oil and oil filter	Replace every 600 miles / 1,000 km / 4 months, whichever comes first.	Replace every eight races / about 30 hours; inspect oil each race / about 3.5 hours. First break-in ride has its own replacement instruction.
Valve clearance and decompressor	Inspect every 1,800 miles / 3,000 km / 12 months, whichever comes first.	Inspect every eight races / about 30 hours, plus the first-break-in instruction.
Air cleaner	Clean each 600 miles / 4 months; more frequently in unusually dusty or wet conditions.	Clean each race / about 3.5 hours; every moto in dusty conditions.
Drive chain	Inspect/lubricate each 300 miles / 500 km / 3 months.	Inspect/lubricate each race / about 3.5 hours; replace every four races / about 15 hours under this off-road schedule. Severe conditions need more frequent attention; use the handbook’s measurement method.
Severe use and mixed riding	Do not extend a schedule merely because a ride included pavement.	The schedule assumes average conditions. Severe use needs more frequent service; keep the specific break-in and condition-based instructions.

Dated reference: 2026 Honda owner manual, maintenance tables on printed pages 47–52. These selected items do not replace the complete schedule, and they are not a newly verified 2027 maintenance manual. Use your exact year/market manual, including the 2027 fork-oil specification.

Item	Factory reference	How to use it
After drain only	1.10 L / 1.16 US qt	Use the specified procedure and final level check.
After drain and filter change	1.15 L / 1.22 US qt	Do not pour in two full liters because a service kit contains two bottles.
Factory oil specification	SAE 10W-30; JASO MA; API SJ or later, excluding energy/resource-conserving labels	The featured Maxima kit supplies 10W-40. Confirm the correct oil for the actual bike/use; kit contents do not rewrite Honda’s specification.
Sealing parts	Match the filter-cover and drain O-rings to the service	An O-ring kit is different from a drain-washer kit for another model.
Filter installation	Correct filter and orientation, correct cover assembly	Use the manual and verify sealing after the engine is run and the level rechecked.

Honda’s 2026 fuel specification is unleaded 91 pump octane or higher in the U.S., with no more than 10% ethanol. Use the actual year/market requirement and the tuner’s instructions for a modified engine. Do not substitute an octane number from a market using a different rating system.

When	Inspect / prepare
Before riding	Tires and pressures appropriate to the exact setup; wheels/spokes; brakes; chain; controls; fluids/leaks; lights; loose equipment. Diagnose a new fault indication.
After dust, water or mud	Filter condition/sealing, airbox, cooling surfaces, chain, guards, fork seals and electrical connections. Service the actual filter system correctly.
After a fall	Steering, throttle return, levers, brake function, radiators, mounts, frame/subframe and luggage. Look behind a guard; visible coverage is not proof that nothing beneath it was damaged.
Before a longer trip	Complete work due during the trip. Check tire/chain/pad life, carry suitable repair supplies and practice using them. Test the loaded bike locally.
Keep a record	Date, odometer, engine/off-road hours, task, fluids/parts, measurements and next service. Keep the installed ECU/map information and suspension setup with that record.

Cooling complaints need diagnosis. Check coolant level, leaks, radiator condition, fan operation and the installed fueling configuration. A thermostat-delete or emissions block-off part is not an automatic cooling-service upgrade. Plan any such change around the actual problem, engine setup and intended use with a qualified technician.

Find Your Honda Owner’s Manual Check the Factory Service-Manual Edition Get Service-Part Help

Make the next service easy to complete correctly.

Service Essentials

Choose supplies for the actual job, filter system and factory specification. Kit bottle quantities are not engine refill quantities, and manual editions must match the model year.

2019–2027 CRF450L/RLOil, filter and service O-rings

Maxima Pro Plus Full Synthetic Oil Change Kit

Make the regular oil service easier to prepare for with the right oil, filter and sealing parts in one order.

Includes 2 liters of Maxima Pro Plus 10W-40 full synthetic oil and one K&N 116 oil filter.
Also includes one OEM oil-filter-cover O-ring and one OEM oil-drain O-ring.
The amount supplied is not the fill quantity. Follow Honda’s procedure and check the oil level correctly after service.
Use the model-specific service schedule and riding-condition guidance; synthetic oil alone does not extend the interval.

Get the Maxima Oil Change Kit

2019–2026 edition • confirm 2027 coverageThe reference for doing it correctly

Honda Factory Service Manual

Keep the correct Honda workshop reference nearby when service moves beyond the owner’s manual or a routine inspection.

Genuine Honda factory service manual for the CRF450L/RL application.
Confirm the edition and any model-year supplements for your motorcycle, particularly when ordering for 2027.
Use the correct procedures, specifications and torque values for the job. Manuals cannot be returned or exchanged.

Confirm Your Service Manual Edition

2019–2027 CRF450L/RLKeep service seals on hand

Oil Service O-Ring Kit

A small consumables kit for riders who already have oil and filters or want spare seals ready for the next service.

Includes two sets of oil-filter-cover and drain-bolt O-rings.
Oil and filters are separate. The Maxima complete oil kit already includes one set of these service seals.
Inspect and fit each seal according to Honda’s service procedure; avoid doubling seals or substituting an unrelated washer.

Stock Up on Service O-Rings

2019–2027 • closed-course use onlyA prepared spare for dusty riding

Twin Air Pre-Oiled Dual-Stage Filter

Keep a correctly prepared spare ready so a dirty filter does not delay the next permitted competition ride.

Dual-stage filter arrives treated with Twin Air BIO filter oil and packaged in a resealable bag.
Confirm compatibility with your installed cage; a PowerFlow system uses its own matching replacement filter.
Seat the filter carefully and service it for actual dust and water exposure, using compatible cleaning and oiling products.
Sold for closed-course racing use only; not legal for street or highway use.

View the Pre-Oiled Twin Air Filter

2019–2027 • competition-bike serviceProtect the intake while cleaning

Twin Air Airbox Wash Cover

Use a dedicated temporary cover to help keep cleaning water and debris out of the intake while the air filter is removed.

Molded plastic cover with a rubber sealing edge replaces the air filter during cleaning.
Check that the cover is seated before washing, then remove it and reinstall the prepared filter before starting the engine.
This is a maintenance tool, not a riding air-filter replacement or an airbox performance cover.
Sold under closed-course racing-only terms; not approved for street or highway use.

View the Airbox Wash Cover

Make the Cart Complete

Check inclusions and compatibility before checkout

The right combination usually matters more than one additional accessory. Read the exact options, avoid duplication and reserve time and budget for installation, setup and a test ride.

You selected	Already included / essential distinction	Add or verify only as needed
Vortex ECU + exhaust package	One ECU and the described full exhaust.	Optional switch/PowerFlow are not automatic. Choose the correct header shield; do not buy another standalone ECU or exhaust.
GET SX1 kit or package	SX1 Controller and Connect are described as included.	Quickshifter sensor and Maya tools are separate; confirm supported functions and the exact mapping.
RS-4 or Q4 exhaust	Spark arrestor included; reviewed Q4 also includes its quiet insert.	Check condition and event rules rather than adding a duplicate arrestor. Factory 4.1 screen and quiet insert are separate considerations.
PowerFlow intake	Cage, pre-oiled PowerFlow filter and airbox bolt.	Match spare filters to that cage. Wash cover is separate and must be removed before starting.
Race Tech package	Fork springs, shock spring and fork Gold Valve kit.	No complete shock, shock Gold Valve kit or installation labor is implied. Do not duplicate components.
Seat Concepts complete seat	Finished seat assembly.	Choose height, cover and correct model. Settle the order before made-to-order restrictions take effect.
Doubletake / Zeta controls	Mirror kit is one side; Pro Armor mounts/shields depend on selections.	Two mirror kits for both sides. Confirm stock/riser/SUB mounting and cable/lever clearance.
IMS tank / radiator guards	The tank needs its specified hardware and clearance.	Use IMS shroud bolts/washers. The 4.5 needs stated trimming; the 5.7 has a usable-fuel caveat. Confirm guards and horn relocation.
T.M. chain guide / sprockets	The featured guide excludes the rubber-damped OEM rear sprocket.	Choose a supported replacement sprocket/guide combination, then confirm chain length and clearance.
Rack / side supports	Rack-only does not automatically supply a fuel container or mount; side racks do not include a top rack.	Choose luggage/mounts, check hatch access and preserve the total 220 lb load limit.
Assembled dashboard	USB/voltage display and AUX connection, with selected cutout.	Gauge is separate; match its generation and ECU version. The AUX connector alone is not a USB charger.
Maxima oil kit	Two liters, K&N 116 and the specified filter-cover/drain O-rings.	Use the correct oil requirement and refill procedure; two liters are not the engine’s normal fill.
Auto clutch	The exact selected clutch system, with its listed components.	Verify cable-clutch application, free play gain, parking behavior and compatibility with existing clutch parts.

Send one complete configuration. Year/model/country; rider weight as the order form requests plus gear and luggage; terrain and road use; ECU and map sheet; intake/exhaust; current tank, guards, bars, risers, suspension and clutch. Photos of an unfamiliar existing part can prevent a wrong assumption. Ask us to review the build before placing a custom or nonreturnable order.

Choose the Ride You Want

Eight practical L/RL build plans

These are purchase and setup sequences. They are not preconfigured kits, and the items in each plan remain separate selections unless a named package explicitly includes them.

Build 01

New-to-you L/RL: establish the baseline

Identify year, country and every existing modification; check the ECU/map history before changing settings.
Use the factory service references to establish work due, then inspect tires, brakes, chain, cooling, controls and bearings.
Choose the correct manual edition and service supplies. Follow the actual oil specification and refill procedure.
Set sag and rider controls, ride a familiar route and solve one clear problem at a time.

Start With the Baseline

Build 02

Road-equipped dual-sport: fit and protection

Keep the road equipment and engine configuration appropriate to road use. Begin with the original tank and measured fuel stops.
Address seated pressure with a Comfort seat or Element seat, and check mirror/lever position.
Choose suitable engine and radiator protection and a compatible handguard arrangement.
Tune the suspension for the real load and keep up with the on-road schedule plus any off-road obligations.

Plan Comfort and Control

Build 03

Technical closed-course: tractable response

Start with throttle/clutch adjustment, traction and a sound engine. Describe the conditions that trigger the control problem.
Compare the Vortex/Q4 package with the Vortex/RS-4 package and choose a map package that matches the intake.
Consider the throttle cam, flywheel weight or auto clutch for the specific behavior required. They are separate decisions.
Match suspension, protection and gearing, then evaluate the complete setup before adding further changes.

Compare the Control Options

Build 04

Vortex + RS-4: a coherent full build

Choose the Vortex/RS-4 package for the actual L/RL year and country; confirm intake and map-sheet assumptions.
Select the optional map switch and PowerFlow only if wanted. The spark arrestor is included; the RS-4 P3 shield is separate.
Pair a suitable seat and Race Tech suspension route with compatible protection. Plan professional installation and setup.
Retain the closed-course restrictions and confirm sound, destination and event requirements before use.

Build the RS-4 Combination

Build 05

FMF Factory 4.1: choose your ECU

Compare the Vortex package and GET SX1 package according to the control and support system you prefer.
Confirm the muffler/insert configuration. The reviewed 041587 screen is included; the quiet insert is separate.
Select the 041577 MegaBomb heat shield if needed, then review intake, mapping, guard and bodywork clearance.
Test the assembled closed-course setup. Do not assume a compact titanium canister establishes sound or public-land approval.

Compare the Factory 4.1 Routes

Build 06

Longer closed-course loops: range within load

Start with measured economy, available fuel stops and the complete rider/gear/cargo weight.
Compare IMS 3 gallon, 4.5 gallon and 5.7 gallon by fit and usable fuel. Account for the 5.7 wing limitation.
Choose a seat and secure rack or side-support arrangement without exceeding Honda’s load rating.
Arrange suspension for the legal load, compatible navigation/power and required service. Test range and handling locally before relying on the setup.

Plan Fuel and Equipment

Build 07

Ground reach: retain useful handling

Set correct sag, check technique and boots, then compare a Low seat with the current position.
If needed, discuss the Kouba link and a coordinated suspension plan with an experienced installer.
Check tire, chain, guard and ground clearance through suspension movement. Do not guess at fork position or stack lowering changes.
Set the side stand for the finished height and test stops, turns and uneven surfaces with normal gear.

Plan Reach and Chassis Height

Build 08

Already modified: finish the details

Inventory the existing ECU, map sheet, exhaust/header, intake cage, tank, guards, bars and clutch before ordering.
Use the compatibility checklist to identify missing pieces and duplicates: header shield, mounting option, proper spare filter or service seals.
Check the gauge’s ECU configuration, chain-guide/sprocket match, stand angle and actual fuel-pickup behavior.
Inspect and test the finished bike. Keep a setup/service record so the next change starts from known information.

Check the Complete Combination

Answers Before You Order

CRF450L / CRF450RL FAQ

Practical answers about mapping, package contents, comfort, range, service and the details that make the completed bike work together.

Does this guide cover a 2027 CRF450RL?

Yes. It covers 2019–2020 CRF450L and 2021–2027 CRF450RL. Honda has published the 2027 model with new graphics and an SS17-to-SS37 fork-oil change. Exact component, market and service-edition checks still matter.

Is the CRF450RL the same application as a CRF450R, RX or X?

Do not assume so. The L/RL has its own engine-management, road-equipment and chassis applications. A component shared with an X may be used in a specifically described L/RL package; the family name alone is not proof. The new 2027 R/RX platform does not redefine L/RL fitment.

What should I buy first?

Start with the limitation and the intended use. Service a bike with an unknown history, set suspension and controls, and choose the seat/protection needed for the ride. For a closed-course bike needing both engine management and exhaust, compare the matched packages before buying separate components.

Will a Vortex ECU eliminate every flameout or stall?

No single part can guarantee that. Correct mapping can improve response and stall resistance, but adjustment, mechanical condition, intake sealing, fuel delivery, riding technique and gear choice also matter. Diagnose a new or persistent fault and confirm the actual ECU configuration.

Can I keep the stock exhaust with Vortex?

Ask us to confirm that the supplied map package supports your exact stock-exhaust and intake configuration. Do not assume an old, used or previously reflashed ECU contains the right map. The ECU’s closed-course use restriction remains even with the stock exhaust.

Which Vortex map number should I use?

Use the map sheet for your actual ECU revision and installed engine/intake/exhaust. Map numbers and trim settings copied from another unit may describe a different calibration. Send us the ECU label and map sheet if the history is unclear.

Does the Vortex handlebar switch select all ten maps?

It switches between the two selections defined by the instructions supplied with the compatible ECU. It does not give ten individual map buttons. Confirm the supported pair and operation for the actual map package.

Does the Vortex package include the handlebar switch?

Only if selected in the order options. The featured Vortex packages treat it as optional, as they do the PowerFlow intake and other listed upgrades. If the switch is already selected, do not add the standalone switch again.

What is the practical difference between Vortex and GET SX1?

Vortex provides ten supplied maps and on-unit fuel trims, with an optional switch. The featured GET kit includes its Controller and Connect Wi-Fi module and two supplied GET/Athena race maps. Choose the calibration, adjustment tools and support route that suit the build; neither is added on top of the other.

Does GET include a quickshifter?

The featured SX1 description lists the quickshifter sensor as a separate accessory, with functions depending on the application. A kit containing an ECU, Controller and Connect does not automatically include that sensor or provide automatic gear changes.

Is the JD Power Surge 6X a replacement ECU?

It is a fuel-controller approach that adds or subtracts fuel in its adjustment zones. It is not the same purchase as a full replacement ECU controlling both fueling and ignition. Use one coordinated strategy with its own instructions.

Why does the USA intake tube matter?

Vortex’s published map assumptions include the USA intake manifold. The Honda USA-spec tube is offered for supported non-U.S. conversions; a U.S.-purchased bike does not normally need it. Identify the tube already installed and confirm the full market-specific configuration before buying.

Should I choose Yoshimura RS-4 or FMF Q4?

Choose the RS-4 for the full-system layout and Yoshimura package you prefer, or Q4 when FMF’s sound-control focus is a priority. Both featured combinations include a spark arrestor. No verified head-to-head L/RL test here proves a universal sound or power ranking.

Does Factory 4.1 include a spark arrestor and quiet insert?

FMF lists the spark-arrestor screen as included with the reviewed 041587 muffler, while the quiet insert is sold separately. Confirm the exact muffler and inserts supplied in a combo. An insert is not a guarantee that the completed bike meets every sound rule.

Does a spark arrestor make the exhaust street legal?

No. Spark control, sound, emissions and road approval are different issues. The featured L/RL ECU/exhaust selections retain closed-course restrictions; the Factory 4.1 full-system listing also excludes public-land use.

Can I buy only a muffler and use the stock L/RL header?

Confirm that exact combination before purchase. The featured full-system selections include their matching header. Generic manufacturer copy or a CRF450X application does not establish that an individually purchased muffler connects correctly to the OEM L/RL header.

Which P3 shield matches my exhaust?

The RS-4 shield is for the specified Yoshimura header, and the MegaBomb shield is for FMF 041577. They are separate accessories from the featured combos. Confirm the actual header and surrounding clearance; do not choose by the motorcycle name alone.

What is included in the PowerFlow kit?

A billet cage, pre-oiled backfire-resistant PowerFlow filter and billet airbox bolt. It changes the stock cage/backfire-screen arrangement. A wash cover is separate, and spare filters must match the installed system.

Is a G2 throttle cam the same fix as ECU tuning?

No. The cam changes cable opening for a given grip movement; the ECU changes fuel/ignition control. A cam can help meter initial throttle input but does not recalibrate the engine. Confirm the L/RL cam, cable fit and smooth throttle return.

What does a flywheel weight change?

It adds rotational inertia and can make low-speed response more deliberate. It does not add horsepower or change mapping. The Steahly ring requires rotor removal and a permanent interference fit, so plan the installation and tools.

How do RadiusX, RadiusCX and TorqDrive differ?

RadiusX and RadiusCX are auto-clutch routes with different included components; manual TorqDrive retains manual clutch operation. An auto clutch still requires the rider to shift gears and follow free-play-gain and parking instructions. Choose one compatible clutch system.

Does the Race Tech package replace the rear shock?

No. It includes fork springs, a rear shock spring and a fork Gold Valve kit for the existing suspension. It does not supply a complete fork/shock or imply a rear Gold Valve kit or installation labor.

Should I choose springs by body weight alone?

Follow the form’s requested rider-weight definition, then supply gear, accessories and luggage separately. Explain terrain, skill and the normal load. Correct spring support and damping need to be considered together, and springs do not increase the motorcycle’s load rating.

Can I use any handlebars with the Scotts SUB kit?

The featured kit requires its specified stock-clamp and 1-1/8-inch bar arrangement and changes bar height/position. Confirm the exact bars, clamps, risers and handguard mounts. Do not assume reducers or a similar-looking clamp make every setup compatible.

Does Seat Concepts offer Tall and XL for this bike?

The current Comfort selector offers Standard, Low, Tall and XL, with XL at standard height only. The Element selector offers Standard, Low and Tall. Cover/color restrictions also matter. These are complete seats, and the made-to-order choices should be settled before ordering.

Is a Low seat the same as lowering the suspension?

A seat change alone does not lower the chassis or reduce ground clearance. It changes seated height and knee room. Chassis lowering changes geometry and clearance and needs a separate setup plan.

Can I slide the forks up to match a lowering link?

Do not use a generic fork-slide instruction on this bike. Honda’s referenced stock setup locates the fork at its prescribed groove. Have a suspension professional plan the front/rear relationship, clearances and stand angle for the actual lowering components.

How many Doubletake kits make a pair?

The featured kit supplies one mirror side. Order two for both sides, and confirm the motorcycle-side mounts and clearance with the screen, handguards and controls.

Will the T.M. chain guide work with the stock rear sprocket?

The featured Edition 2 guide explicitly excludes the rubber-damped OEM rear sprocket. Confirm a supported replacement sprocket/guide combination and its clearance before ordering.

Which fuel tank should I choose?

Choose by required fuel stops, usable fuel, installation and manageable weight. The 3, 4.5 and 5.7-gallon IMS options have different practical tradeoffs. The 4.5 needs specified shroud trimming; the 5.7 has an important wing-fuel limitation. Current featured tank listings are closed-course only.

Can I use all 5.7 gallons in the largest IMS tank?

Do not count on it. IMS warns roughly one to two gallons can remain in the wings depending on terrain and fuel movement. Measure the actual setup and keep a margin; neither 5.7 gallons nor a simple subtraction establishes guaranteed usable fuel.

Can I reuse the Honda shroud bolts on an IMS tank?

Use the IMS-specified bolt/washer combinations supplied for the tank. IMS warns against substituting OEM shroud bolts. Follow the instructions for the exact size and any required trimming or mounting changes.

How much luggage can the L/RL carry?

Honda’s documented 220 lb / 100 kg maximum includes the rider, cargo and accessories, so it is not a luggage allowance. Count gear and added equipment and observe any lower accessory limit. The bike is operator-only; a rack or stronger spring does not authorize a higher load.

Does the rear rack include a Rotopax mount and container?

The featured rack-only selection does not. Confirm each mounting/container purchase separately and stay within the motorcycle and rack requirements. Side luggage supports also do not automatically include a top rack.

Will a sprocket change throw off the speedometer?

Changing only final-drive gearing does not change the front-wheel sensor’s road-speed relationship. Check calibration for measured error or changes to front-wheel/tire rolling circumference. The SpeedoDRD corrects the signal going forward; it does not rewrite existing odometer mileage.

Does the assembled dashboard include an Advanced Mini Gauge?

No. It includes the described USB/voltage display and AUX connection with the selected blank or AMG cutout. Match the gauge generation and ECU-specific configuration separately; a Vortex, GET or AiM installation needs the appropriate gauge setup.

How often should I change the oil and inspect valves?

The inspected 2026 Honda on-road schedule specifies oil/filter each 600 miles or four months and valve/decompressor inspection each 1,800 miles or 12 months. Its off-road schedule uses about 30 hours for oil/filter replacement and valve inspection, plus break-in and severe-use requirements. See the separate schedules and your exact manual.

Should I pour in both liters from the oil kit?

No. Honda’s inspected 2026 drain-and-filter reference is 1.15 L, followed by the required level-check procedure. Kit contents are packaging quantity. The featured kit supplies 10W-40, while that factory reference specifies 10W-30; confirm the proper oil for the actual motorcycle and use.

Are the featured headlight, dash and tail kit road approved?

Their current product order terms require closed-course-only acceptance and exclude street/highway use. Do not infer approval from the presence of a low beam, license-plate light or familiar connector. Keep the road build’s equipment appropriate to its use.

What information should I send for build help?

Send year/model/country, intended use, rider/gear/load, terrain and the existing ECU/map sheet, intake, exhaust, tank, guards, bars, risers, suspension and clutch. Include the problem you want to solve. That lets us check the whole combination before a custom or nonreturnable order.

Your 450. Built for Your Ride.

Choose the parts that work together.

Tell us how you ride and what the bike already has. We’ll help you put the engine response, suspension, fit and supporting equipment into one coherent build.

Shop CRF450L / RL Parts Get CRF450L / RL Build Help Call 909-758-8034