S&S Cycle 93" Sidewinder Big Bore Stroker Engine Performance Kit - High Compression 91-9130

93" Sidewinder® Big Bore Stroker Engine Performance Kit- High Compression Upgrade your Harley-Davidson with the S&S Cycle 93" Sidewinder Big Bore Stroker Kit, designed to enhance the performance of 74" or 80" Shovelhead engines. This comprehensive kit includes high tensile cast iron cylinders measuring 3.625 inches in bore diameter, providing increased displacement and power. The forged pistons come complete with wrist pins and rings, ensuring durability and reliable operation under high-performance conditions. The kit is compatible with engines up to 93" or 96" displacement, making it suitable for a range of custom builds and performance upgrades. The kit features a 4.5-inch or 4.625-inch stroke S&S flywheel assembly, which is dynamically balanced for smooth operation. Heavy-duty connecting rods and mainshafts, made by S&S, are included to handle the added power and stress. All hardware, including stainless steel head bolts, base nuts, and head, base, and exhaust gaskets, are made from high-quality materials to ensure longevity and optimal sealing. An S&S heavy-duty top motor mount is also part of the kit, providing a secure and stable mounting point for the engine components. Manufactured in the U.S.A., this performance upgrade kit is built to meet high standards of quality and craftsmanship. It is ideal for motorcycle enthusiasts seeking substantial power gains and reliable performance from their Harley-Davidson Shovelhead engines. The kit's comprehensive nature simplifies the upgrade process, providing nearly everything needed to convert a stock engine into a high-performance powerhouse, making it a valuable addition for custom motorcycle builders and performance riders alike. Features: High tensile cast iron cylinders with 3.625-inch bore for increased displacementForged pistons with wrist pins and rings for durability and performance4.5-inch or 4.625-inch stroke S&S flywheel assembly, dynamically balanced for smooth operationHeavy-duty S&S connecting rods and mainshafts designed for high power loadsStainless steel head bolts, base nut, and gaskets for reliable sealing and longevityIncludes S&S heavy-duty top motor mount for secure engine mountingMade in the U.S.A., ensuring high quality and craftsmanship