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  • Brand:CRF's Only
  • Model:CO-VJ

Price : $189.99 $189.99

Available Options:
Valve Seats & Guide Service:
Bench Shim:
CRF Model:
Performance Porting Service:
CRF Model Year:

Honda CRF Performance CNC Valve Job

CRF's Only CNC Performance Valve Job for your Honda CRF450R, CRF450X, CRF250R, CRF250X, CRF150R or any Honda head. We can also perform this same valve job on any motorcycle head.  Contact us for more information.

CRF's Only CNC Performance Valve Job includes the following:

  • Disassemble and inspect head.
  • Complete head reconditioning which includes not just cleaning the head but also meticulous soda blasting to remove power-robbing carbon deposits in intake and exhaust ports.
  • Solution clean head and inspect valve seats and guides.  Replacement is available if necessary (valve seat and guide parts and replacement labor additional cost).
  • Professional valve seat cutting using state of the art NEWEN CNC valve seat cutting machine. This step is absolutely required for quality results and the durability of your valves and yet is often overlooked by inferior service shops.
  • For added performance we perform a proprietary CNC port to valve seat profiling for increased performance. Ask our competitors if this is included in their service.

Optional Services

  • Performance Porting Service for increased performance.  To learn more about this service click here.
  • Pro Valve Seats and Guide Service replaces your worn stock valve seats and guides with high performance valve seats and guides.  We use a innovative copper alloy seat material which dissipates heat from the valves to the seat much quicker than the stock material.  Our guides are made from a nickel-aluminum-bronze which is reamed and honed to exacting tolerances to insure precise valve stem control. Like our valve seats, our valve guide material dissipates heat much quicker than the stock guide material.  


  • We offer OEM and Kibblewhite valve components.  Contact Us if you need assistance with these parts
  • New valve components are required and must be purchased from CRF's Only for this service
  • Do not ship your head until you receive an email with direction on what to ship and where to ship it.
  • Allow 3-6 business days for this service to be performed
  • Once completed we'll send your head back to you (you pay return shipping)

crf450 head valve job