Kawasaki KX250 2003-2004 Phathead Racing cylinder head kit Color:Red 103cc 52/53mm big bore chamber

103cc 52/53mm big bore chamber 100+ octane - for use with big bore piston

H50  -  66

H34   17

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Kawasaki KX250 2003-2004 Phathead Racing cylinder head kit Color:Red 103cc 52/53mm big bore chamberKawasaki KX250 2003 2004 Phathead Racing cylinder head kit Chamber selection: K21 21. 6cc Stock compressionK22 20. 2cc (95+ octane)K23 19. 4cc (100+ octane)K24 18. 3cc (105+ octane) Phathead Kits include a head shell with one combustion chamber, two sets of o rings, cylinder head nuts, copper washers, some stickers for your bike and tool box and installation instructions.. Phathead cylinder heads are made of 6061 T6 billet aluminum. The material is