S&S Cycle 70-84 BT 93in Sidewinder Big Bore Stroker Kit - Gloss Black

This S&S Cycle Sidewinder big bore stroker kit gives you nearly everything you need to upgrade a stock 74-inch or 80-inch Harley-Davidson Shovelhead engine to a 93-inch displacement. Inside this kit, you'll find a 4-1/2 inch stroke S&S flywheel assembly that's dynamically balanced for smoother operation, along with S&S 3-5/8 inch bore high tensile cast iron Sidewinder cylinders. It also includes forged pistons complete with wristpins and rings, all set up for a 8.5:1 compression ratio.

This kit is a well-built and economical way to achieve a significant increase in engine size. The combination of the larger bore cylinders and the extended stroke flywheel assembly fundamentally changes the engine's displacement, leading to improved torque and power output. The forged pistons are designed to handle the increased demands of a larger displacement engine, and the included rings ensure a good seal for efficient combustion. The gloss black finish on the cylinders and other components adds a distinct visual appeal to your engine build.

When undertaking an engine build of this magnitude, it's important to ensure all supporting components are up to the task. While this kit provides the core components for the displacement increase, consider the condition of your engine cases, camshafts, and fuel delivery system to complement the new power. Always refer to the manufacturer's installation instructions for detailed guidance on assembly and any specific requirements for your Shovelhead engine.