S&S Cycle 96 Sidewinder Big Bore Stroker Kit for Harley Want more power at an economical price S&S has you covered with their 96 Sidewinder Big Bore Stroker Kit. This kit contains virtually everything needed to take a stock 80 Evo big twin up to a 96 displacement. Features: S&S 3-5/8 bore cylinders 9.75:1 forged pistons 4-5/8 stroke dynamically balanced S&S flywheel assembly S&S heavy-duty connecting rods and mainshafts Head gaskets, base gaskets, and exhaust gaskets Made in the USA Notes: Stock cases will need to be bored out to 3-5/8 to accommodate the larger displacement. 1977-1989 style pinion gears, spacer, and nut are required when installing S&S flywheel assemblies. For installation in 1990-2000 or scratch built engines, order the S&S Pinion Shaft Conversion Package separately.