Features: Kit includes fitted forged pistons, pins, clips, rings, cylinders, head gaskets, base, and exhaust gaskets. 10.9cc dished pistons; 10.6:1 compression ratio w/stock 85cc cylinder heads. For use with stock heads or S&S heads with stock bolt pattern. 4.625" stroke. Made in the U.S.A.. Requires crankcase machining..
