80" 3-1/2" Bore Cylinder and High Compression Piston Kit for 1979-'84 80"HD® Big Twins - Gloss Black Finish NATIVE CUSTOM BAGGERS HD9813RG-STAGE3

HD9813RG-STAGE3

1/4-20 x 1/2

An S&S 96" 3-5/8" Sidewinder big bore stroker kit is an economical route to a larger displacement engine

Unlike cast aluminum

80" 3-1/2" Bore Cylinder and High Compression Piston Kit for 1979-'84 80"HD® Big Twins - Gloss Black Finish NATIVE CUSTOM BAGGERS HD9813RG-STAGE3This kit is intended to replace the cylinders and pistons of a 80" shovelhead engine and increase the compression ratio to 9: 1. Compatible with stock or S&S cylinder heads. Kit includes S&S 3 1 2" bore high tensile cast iron cylinders, 3 1 2" bore forged high compression pistons for 80" (4 1 4" stroke) engines with rings and wristpins, head gaskets, S&S stainless steel head bolts with washers, base nuts, base gaskets.