S&S CYCLE Flywheel - Evolution 320-0477

Flywheel - Evolution Replacement Flywheel Assemblies for Twin Cam Motors, S&S 3-piece flywheels with integral main shafts are the strongest yet, made from 4140 steel and feature a larger 1.671" crankpin, Flywheel assemblies are designed for use with Timken bearing conversion, Fits directly in stock crankcases with no modifications, Made in the U.S.A.