JavaScript seems to be disabled in your browser.

You must have JavaScript enabled in your browser to utilize the functionality of this website. Click here for instructions on enabling javascript in your browser.

  • Brand:CRF's Only
  • Model:CO-RSV1

Price : $349.99 $349.99

Available Options:
Valve Seats & Guide Service:

Honda CRF Race Head Series 1.0 Service

CRF's Only Race Series Head Service

  • Complete valve job
  • Performance porting

Race Series Head Service Includes:

  • Disassemble and inspect head.
  • Complete head reconditioning includes meticulous soda blasting to remove power-robbing carbon deposits.
  • Solution clean head.
  • State of the art CNC valve seat cutting. This is absolutely required for the highest quality results and durability of your valves and is often overlooked by inferior service shops.
  • Performance porting service.  For maximum performance we perform porting of intake and exhaust ports which includes proprietary CNC port to valve seat profiling.
  • Assemble head and valve components.
  • Vacuum test head assure perfect valve seal.

Optional Services

  • Race Series Valve Seats and Guides Service: Replaces your worn stock valve seats and guides with high performance valve seats and guides.  We use a innovative copper alloy seat material, MoldStar-90, which dissipates heat from the valves to the seat much quicker than the stock material.  We utilize the high quality Kibblewhite guides to ensure precise valve stem control. Like our valve seats, the Kibblewhite valve guide material dissipates heat significantly quicker than the stock guide material.  


  • We offer OEM and Kibblewhite valve components.  Contact Us if you need assistance with these parts
  • New or used valves are required to properly set valve stem protrusion
  • Photo shown with optional Race Series valve seats and guides
  • 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 6-9 business days for this service to be performed
  • Once completed we'll send your had back to you (you pay return shipping)