Description
Kawasaki KX250 Phathead Combustion Chambers Chamber selection:W21 21.6cc Stock compression 6cc (110+ octane) Chamber selection:K14 110 + CR125R9304 cobra YFB250FW Timberwolf 4x4 YFM350ER 6cc (110+ octane) Honda CR500 Phathead cylinder head kit with compression release 1985 2001