S&S Cycle Sidewinder Big Bore Stroker Kit For Harley Shovelhead Take your Shovelhead build to the next level with the S&S Cycle Sidewinder Big Bore Stroker Kit. Designed to increase displacement from a stock 74 or 80 engine to 93 or 96, it brings together nearly everything needed for the conversion. Features: Increase a stock Shovelhead engine to 93 or 96 displacement Includes rods and main shafts, cylinders and pistons- fit and ready to install with head and base gaskets S&S adjustable push rods are also included Stock cases and heads must be bored to accept the larger 3-5/8 bore cylinders Stock cases must be cleared for the crank pin nut S&S manifold must be purchased due to the increased cylinder length Available with 4-1/2 stroke or 4-5/8 stroke Made in the USA