S&S Cycle 2007+ BT B-Style 4-3/8in Stroke Flywheel Assembly w/ Sprocket Shaft Bearing Race

Starting with a 4-3/8 inch stroke, this S&S Cycle flywheel assembly is built for 2007 through 2016 Harley-Davidson Big Twin engines that use internally balanced configurations. This assembly is designed to work with stock pistons, making it a straightforward upgrade for many builds. The flywheel is a critical component of your engine's rotating assembly, dictating the displacement and power potential of your motor. A longer stroke generally means more displacement, which translates to more torque and horsepower when paired with the right supporting modifications.

This particular assembly comes complete with the sprocket shaft bearing race already installed. This saves you a step during assembly and ensures a proper fitment for this crucial bearing. S&S Cycle is well-known for their high-performance engine components, and this flywheel assembly is no exception. It's constructed to handle the stresses of increased displacement and higher RPMs, offering a solid foundation for a performance engine build. The precision balancing and robust construction are key to smooth operation and long-term reliability, even when you're pushing your engine hard.

When undertaking an engine build of this magnitude, it's important to ensure all supporting components are up to the task. This flywheel assembly is designed to be a direct replacement for the stock unit in the specified Big Twin models, but you'll want to confirm compatibility with your specific engine build, especially if you're deviating from stock piston configurations or internal balancing. Proper installation is key, so always refer to the manufacturer's detailed installation instructions to ensure everything is torqued correctly and aligned properly for optimal performance and longevity.