Pistons - Rings - Cylinders

Huge bore increase means huge power increase Works with stock crankcases (no machine work) Powder coat finish matches factory finish MLS (multi-layered steel) head gaskets 4.320" Bore 4.5" stroke...

Complete kits include cylinder sleeves, pistons and head gasket 750cc kit increase bore and stroke to 83.5mm x 67.8mm (stock is 78 mm x 67.8 mm) Increases compression ration to 11.0:1 (stock is 9...

High port flow gives great performance now, and more later when additional upgrades are done Heads are fully assembled with springs and valves Compression ratios vary depending on cylinder heads...

High port flow gives great performance now, and more later when additional upgrades are done Heads are fully assembled with springs and valves Compression ratios vary depending on cylinder heads...

S&S 93" 3 5/8" Sidewinder big bore stroker kit is an economical route to a larger displacement engine. This kit contains nearly everying needed to take a stock 74" or 80" Harley shovelhead engine up...

S&S - 95 INCH BIG BORE KIT Available in black or silver powder-coat finish. 9.7:1 compression ratio with stock heads. Made in the U.S.A. Kits include cylinders, pistons, rings and gaskets...

S&S - 95 INCH BIG BORE KIT Available in black or silver powder-coat finish. 9.7:1 compression ratio with stock heads. Made in the U.S.A. Kits include cylinders, pistons, rings and gaskets...

S&S - 97 INCH BIG BORE KIT Black or silver powder-coat finish. Easy installation: no need to bore or split existing cases, just swap the cylinders. Made in the U.S.A. Even though stock...

S&S - 97 INCH BIG BORE KIT Black or silver powder-coat finish. Easy installation: no need to bore or split existing cases, just swap the cylinders. Made in the U.S.A. Even though stock cylinders...

S&S - XL 883 TO 1200 CONVERSION KIT Increase displacement from 883cc to 1200cc. No cylinder head modifications. No machining. Available in wrinkle black and silver powdercoat finish. Kits include...

Provide everything you need to replace the top end of a 74" shovelhead engine S&S top end kits for shovelheads include a set of S&S Super Stock cylinder heads, a pair of S&S stock bore cylinders...