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READ BEFORE ORDERING: Orders placed after 10:00am PT on operational days will be processed the next day. Shippers and manufacturers are experiencing delays. Due to rapidly changing market conditions, advertised prices may be changed at any time without notice. Phone service has been suspended. Use our Contact Us page.

  • Brand:Cylinder Works
  • Model:CH1003-K01

Price : $399.95 $379.95

CRF250R\'04-07 - Cylinder Works Race Head

*** Available for back order - Do not order if you can not wait for restock to arrive ***

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