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2cc (95+ octane)K23 - 19
KX Stroker insert for Hotrods crank (listed as +4mm) is actually a +2mm
9cc 100+ octane
Yamaha YZ125 Phathead cylinder head kit 2005-2026
Phathead Kits include a head shell with one combustion chamber
Kawasaki KX250 Phathead cylinder head kit 2005-2007 Color:Purple 2cc (95+ octane)K23 - 19Kawasaki KX250 Phathead cylinder head kit 2005 2007 Chamber selection: W21 21. 6cc Stock compressionW22 20. 2cc (95+ octane)W23 19. 4cc (100+ octane)W24 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 stronger
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