S&S Cycle 99-06 BT 4-3/8in Stroke Flywheel Assembly w/o Sprocket Shaft Bearing

This is the S&S Cycle 4-3/8 inch stroke flywheel assembly, specifically made for 1999 through 2006 Harley-Davidson Big Twin engines, excluding 2006 Dyna models. If you're rebuilding the heart of your motorcycle and looking to increase displacement and power, this assembly is a solid foundation. It's designed to give your engine a longer stroke, which generally translates to more torque and improved performance, especially for riders who appreciate strong acceleration.

S&S Cycle is well-known for its performance engine components, and this flywheel assembly is built to their standards. It features a 4-3/8 inch stroke, a significant increase over stock, allowing for larger pistons and greater cubic inches. This assembly comes without the sprocket shaft bearing race, meaning you'll need to source that separately or reuse your existing one if it's in good condition. Proper installation is critical for these components, as they are the rotating mass at the center of your engine's power delivery. Ensure all mating surfaces are clean and that you follow the manufacturer's torque specifications precisely during installation to maintain balance and longevity.

Because this is a major engine component, it's important to note that it is not CARB approved and cannot be shipped to California. If you're building a high-performance engine and need a reliable, longer-stroke flywheel assembly, this S&S Cycle part is a popular choice among builders looking for that extra performance edge.