CYLINDER WORKS REPLACEMENT CYLINDER HEAD CRF250R’04-07 CH1003-K01. New replacement cylinder head. Include cam caps and cam cap bolts. Include C630 (nickel/ aluminum/ bronze) valve seats and guides. Shortened valve guides to accept higher lift cams. Blended bowl seat to port. Do not include valves, springs or lifters. Made in the U. Includes cam caps and cam cap bolts. Includes C630… Read more →