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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:Cylinder Works
  • Model:CH1003-K01

Price : $399.95 $379.95

CRF250R\'04-07 - Cylinder Works Race Head

With each cylinder head you receive the machine matched cam cap(s), C630 valve seats and guides, a competition valve job, shortened valve guides to accept higher lift cams, blended bowls, an un-shrouded combustion chamber, and stock port shapes.  This gives you an affordable option to simply get back on track while also including high quality features for building race engines.

These cylinder heads are made in the USA at Cylinder Works facility in Urbandale, Iowa.


  • C630 valve seats and valve guides compatible with titanium and steel valves
  • Shortened valve guides to accept higher lift cams
  • Performance profiling of the valve seats
  • Blended bowls
  • Un-shrouded combustion chamber
  • Stock port shapes
  • Machine matched cam caps