41/8" BORE CYLINDERS WITH PISTONS KIT FOR HARLEY-DAVIDSON

S&S CYCLE 41/8" BORE CYLINDERS WITH PISTONS KIT FOR HARLEY-DAVIDSON Big Bore Kit Kit includes fitted forged pistons, pins, clips, rings, cylinders, head gaskets, base, and exhaust gaskets

For use with stock heads or S&S heads with stock bolt pattern

4.625" stroke

Made in the U.S.A.

41/8" BORE CYLINDERS WITH PISTONS KIT

NOTE: Requires crankcase machining.