S&S Cycle 2017 M8 Models 4-1/2in Stroke Flywheel w/ Full Width Rods & Balancer Gear

If you're looking to build a serious performance engine for your Milwaukee-Eight (M8) Harley-Davidson, the S&S Cycle 4-1/2 inch stroke flywheel assembly is a solid foundation. This assembly is designed to be the heart of your engine, offering improved strength and precision machining for demanding applications. It's built to handle more power and higher RPMs, making it ideal for those seeking a significant performance boost from their M8 platform.

S&S Cycle has been refining flywheel technology for decades, and this assembly for the M8 platform represents their commitment to excellence. It features S&S High Strength Connecting Rods, which have been analyzed using Finite Element Analysis to eliminate potential weak spots and ensure they can handle increased power output. These rods are made from heat-treated 4140 material, making them significantly stronger than stock components. The full-width wristpin design, which requires S&S Performance Pistons, contributes to the overall robustness of the assembly. This stronger construction means you won't need to weld the crankpin, and the assembly is balanced specifically for S&S Performance pistons weighing 1213g, ensuring consistent balance and precision machining for smoother operation and the capability for higher RPMs.

This flywheel assembly is designed for a 4-1/2 inch stroke, suitable for 114 or 128 cubic inch M8 engines. It comes with the balance gear already installed, simplifying the build process. This is a well-built component for riders who want to push the performance limits of their Harley-Davidson motorcycle. Please note that this part is not CARB approved and cannot be shipped to California.