S&S Cycle 2017 M8 Models 4-3/8in Stroke Flywheel w/ Full Width Rods & Balancer Gear

If you're building a high-performance Milwaukee-Eight engine, the flywheel assembly is where it all starts. This S&S Cycle 4-3/8 inch stroke flywheel assembly is designed for 2017 and later M8 models, offering a solid foundation for serious power gains. It's built to handle the demands of increased RPM and more available power, making it a key component for custom builds and performance upgrades.

S&S Cycle has been refining flywheel technology for decades, and this assembly reflects that experience. It features S&S high-strength connecting rods, developed using Finite Element Analysis to eliminate weak points and ensure they can handle more power. These rods are made from heat-treated 4140 material, which is significantly stronger than stock. The full-width wristpin design, which requires S&S Performance Pistons, contributes to a stronger overall assembly that doesn't need welding at the crankpin. This assembly is precisely balanced for S&S Performance piston weights, ensuring consistent balance and smooth operation at higher RPMs.

This flywheel assembly includes the balance gear and is specifically balanced for a 4-3/8 inch stroke, suitable for 107 or 124 cubic inch M8 engines. It's a well-built component that provides a strong base for pushing your M8 engine's performance limits. Please note that this part is not CARB approved and cannot be shipped to California.