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

S&S Cycle has been building performance engine components for over sixty years, and they're known for making parts that can handle serious power. This flywheel assembly is designed for 2017 and later Milwaukee-Eight models, giving you a solid foundation for a high-performance engine build. It features a 4-1/2 inch stroke, which is perfect for creating either a 114 cubic inch or a 128 cubic inch engine, depending on your other components.

The heart of this assembly is the S&S high-strength connecting rods. These rods were developed using Finite Element Analysis to pinpoint and eliminate potential weak spots, allowing them to handle significantly more power and higher RPMs than stock. They're made from heat-treated 4140 material, which is more than twice as strong as what comes from the factory. The tapered wristpin design means they work with your stock pistons, and the overall stronger construction means you won't need to weld the crankpin, a common practice with lesser components. This assembly is balanced specifically for a stock piston weight of 1060 grams, ensuring smooth operation and precision machining for consistent performance.

Included with the flywheel is the balancer gear, essential for proper operation in your M8 engine. This flywheel assembly is a critical piece for anyone looking to build a more powerful Milwaukee-Eight engine, offering durability and performance that stands up to S&S Cycle's reputation.