FEATURED BRAND = COVERKING CHECK OUT COVERKING NOW

Auto Barn
Est. 1957
S&S Cycle

S&S Cycle 00-06 BT 4in Stroke Flywheel Assembly w/ Sprocket Shaft Bearing Race

$1813.84

On Backorder — Expected to ship by May 7, 2026

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

S&S Cycle 4in Stroke Flywheel Assembly w/ Sprocket Shaft Bearing Race. Built for 1999-2006 Harley-Davidson Big Twins.

Key Features

  • Fits 1999-2006 Harley-Davidson Big Twins (except 2006 Dyna models).
  • Features a 4-inch stroke for increased engine displacement and performance.
  • Includes the sprocket shaft bearing race for a more complete assembly.
  • Designed for internally balanced Big Twin engines.
  • Well-built components from S&S Cycle, known for performance engine parts.
Secure CheckoutFast Shipping631-982-0042
About this part

Product Details

S&S Cycle is well-known for building high-performance engine components for Harley-Davidson motorcycles. This 4-inch stroke flywheel assembly is a prime example, designed to increase the displacement and power of your Big Twin engine. It includes the sprocket shaft bearing race, making it a more complete package for your engine build.

This assembly is intended for internally balanced 1999-2006 Big Twin Harley-Davidson models, excluding 2006 Dyna models. By increasing the stroke to 4 inches, you're effectively increasing the engine's displacement, which generally leads to more torque and horsepower. This is a significant upgrade for riders looking to get more performance out of their motorcycle's engine. The well-built nature of S&S Cycle components means you can expect reliable performance from this flywheel assembly.

When undertaking an engine build of this magnitude, it's crucial to ensure all components are compatible and installed correctly. This flywheel assembly is designed to fit a wide range of Harley-Davidson models from 1999 through 2006, including popular bikes like the Road King, Heritage Softail Classic, and Fat Boy. Always consult your service manual for specific installation procedures and any additional parts that may be required for your particular application.

Specifications

Brand
S&S Cycle
Manufacturer Part #
320-0396
UPC
320-0396

Frequently Asked Questions

S&S Cycle 00-06 BT 4in Stroke Flywheel Assembly w/ Sprocket Shaft Bearing Race

$1813.84