S&S 3-piece crankshaft flywheel with integral main shafts are the strongest yet, made from 4140 steel and feature a larger 1.671" crankpin
Crankshaft flywheel assemblies are designed for use with OEM-style roller sprocket shaft bearings
Fit directly in stock crankcase with no modifications
For 96"/103" displacement in 07-up Twin Cam "A" motor, w/o sprocket bearing race with 4.375" stroke
Made in the U.S.A.
NOTE: Stock pistons in 07-later engines require rods with tapered wristpin ends.
NOTE: All S&S crankshaft flywheels for 07-later engines have 7.659" length connecting rods.
MAIN BEARING NOTE: Most S&S crankshaft flywheel assemblies for 99-15 Big Twin engines are designed for use with Timken® sprocket shaft bearings. They will fit directly in stock 99-02 Harley-Davidson® crankcases and in all S&S crankcases for 99-15 Big Twin engines, with no modifications. However, stock 2003 and later engines use a roller type bearing for the sprocket shaft. S&S dOEs offer crankshaft flywheel assemblies that are compatible with late roller style stock sprocket shaft bearings, but they are not recommended for very large, high performance engines.