Piston Sets - Powersports

This 3-5/8" big bore kit may be used to replace the cylinders and pistons of an S&S SH93 high compression engine or a stock HD® shovelhead engine that has been upgraded with an S&S 93" Hot Set Up Kit® . This kit may also be used to upgrade an engine with...

This kit is intended to replace the cylinders and pistons of a 80" shovelhead engine and maintain the stock compression ratio of 8:1. 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...

This 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...

Kit includes S&S 3-7/16" bore high tensile cast iron cylinders, 3-7/16" bore forged stroker pistons with rings and wristpins, head gaskets, S&S stainless steel head bolts with washers, base nuts, base gaskets. This kit can be used in engines with 4-1/2",...

This kit is intended to replace the cylinders and pistons of a 74" shovelhead engine and keep the stock compression ratio of 8:1. Compatible with stock or S&S cylinder heads. Kit includes S&S 3-7/16" bore high tensile cast iron cylinders, 3-7/16" bore...

This kit is intended to replace the cylinders and pistons of a 74" shovelhead engine and increase the compression ratio to 9:1. Compatible with stock or S&S cylinder heads. Kit includes S&S 3-7/16" bore high tensile cast iron cylinders, 3-7/16" bore...

Installing this 3-5/8" big bore kit will increase the displacement of stock 80" HD® shovelhead engines to 88" using the stock 4-1/4" flywheels. This may also be used to build an 88" engine in 74" shovelheads if a 4-1/4" stroke flywheel assemble is also...