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COVID-19 Update: CRF's Only is open and shipping. Expect delays from CRF's Only normal shipping time frames. Orders placed after 10am PT will be processed the next day. Store Pickup has been suspended.


  • Brand:CRF's Only
  • Model:CO450RHKW

Price : $868.88 $711.55

Available Options:
Optional Gasket:
Performance Porting Service:
Header Studs:
Model Year:

Quantity:
CRF450R - New OEM Head w/ Kibblewhite Valves & Springs

*** 2007-08 CRF450R Head - Currently back ordered - Do not order if you can not wait for restock to arrive ***

Each CRF's Only head is professionally assembled with Kibblewhite stainless steel valves.  Valves seats are cut and a proprietary port to valve seat profiling performed for increased performance using a state-of-the-art NEWEN CNC machine.  This same NEWEN technology is used by top race teams in all of motorsports such as F-1, NASCAR, NHRA etc.  Don't settle for less when the best is so affordable.

  • New OEM CRF450R head
  • Kibblewhite Stainless Steel Intake valves
  • Kibblewhite Stainless Steel Exhaust valves
  • Kibblewhite seals and spring kit
  • New OEM valve cotters
  • Valves professionally installed
  • Ready to bolt on and ride

OPTIONAL: Performance porting service for even more performance from this head. Bench Shim service requires you to ship to us your entire cam carrier, cam, shim buckets, rocker assembly and shims.

NOTE: The 2007-2008 head is available again!