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  • Brand:CRF's Only
  • Model:CO-KWVJ

Price : $699.95 $664.95

Available Options:
CRF Model:
Bench Shim:
Performance Porting Service:
CRF Model Year:
Head Gasket:

Honda CRF Performance CNC Valve Job w/ Kibblewhite Valves

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.

Performance CNC Kibblewhite Valve Job & Head Recondition Service


  • Performance CNC valve job (see below for details)
  • Two Kibblewhite stainless steel intake valves 
  • Two Kibblewhite stainless steel exhaust valves
  • Kibblewhite high performance spring kit
  • New Kibblewhite valves seals
  • New valve keepers (cotters)
  • Professional valve installation
  • Head gasket recommend but optional

This Kibblewhite Valve Job and Head Reconditioning service will provide you with extreme valve stability and durability. 

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

  • 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 and replace as necessary (NOTE: 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 and blending for increased performance. Ask our competitors if this is included in their service.
  • Professional assembly of new valve components.
  • Optional bench shimming is also available at additional cost (see notes below about this service before selecting it)


  • We offer OEM and Kibblewhite valve components.  Contact Us if you need assistance with these parts
  • Ship your head to us at: CRF's Only, ATTN: Head Service, 201 S. Wineville Ave. Unit A, Ontario, California 91761
  • Provide contact information and order number in the package with your head
  • 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)
  • Bench Shimming: Due to variances in production flatness between the head and the cylinder, we can not guarantee your valves will maintain the set clearance once bolted on to your motor. 

NOTE: Select our performance porting service for increased performance.

Great service from CRF's Only. They did very high quality work, on time, and communicated very well during the process ...

Rated by David

I fought and fought and fought with my CRF250X head and my local mechanic. Ken at CRF's Only had all ...

Rated by Jonah

As the neighborhood mechanic for the kids bikes, I was getting a little more than frustrated with the constant valve ...

Rated by Brett

You guys rock! Loving my 450x since you guys did the valve work for me earlier this year, runs like ...

Rated by steven

I love the performance of this product! and the price was pretty good. The local shop wanted over $1,000 to ...

Rated by Andy

CRF's Only did an excellent job performing a Kibblewhite Valve Job on my 05' CRF250X head. I put the engine ...

Rated by Robert Poling