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

This is the S&S Cycle 4-3/8 inch stroke B-Style flywheel assembly, specifically made for 2007 through 2016 Harley-Davidson Big Twins that are internally balanced. If you're looking to rebuild or significantly upgrade the heart of your engine, this assembly is a solid foundation. It's designed to work with stock pistons, making it a more straightforward integration into your existing engine build. The flywheel is a critical component in your engine's drivetrain, converting the linear motion of the pistons into rotational force that ultimately powers your ride.

S&S Cycle is well-known for its performance engine components, and this flywheel assembly is built to their standards. The 4-3/8 inch stroke is an increase over stock, which translates to more displacement and potentially more power when paired with the right components. This assembly is sold without the sprocket shaft bearing race, so you'll need to source that separately if your current one is worn or if you're building from scratch. Proper balancing is key for smooth operation and longevity, and this assembly is intended for internally balanced engines, meaning the balance factor is already accounted for within the flywheel itself and potentially the connecting rods.

When undertaking an engine build of this magnitude, it's important to ensure all components are compatible and installed correctly. This flywheel assembly is a significant part of your engine's rotating assembly, and its quality directly impacts performance and reliability. Always refer to the manufacturer's installation instructions for specific details regarding assembly and any additional parts required for your particular application.