S&S Cycle SS91-9126 93ci Sidewinder Big Bore Stroker Kit Gloss Black for Big Twin Shovelhead 70-84An 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" HD shovelhead engine up to 93" displacement. This kit includes S&S 3 5 8" bore high tensile cast iron Sidewinder cylinders and forged pistons with wristpin and rings, a 4 1 2" stroke dynamically balanced S&S flywheel assembly, complete with S&S heavy duty connecting rods and