MSD Powersports Pro-Billet Flywheels are CNC-machined from 7075-T6 aluminum for absolute accuracy and great strength. Also, most are half the weight of stock units! This lightweight assembly produces quick throttle response with less stress on other mechanical engine components. The starter gear features a hardened ring with chamfered teeth for smooth starter engagement.
Lightweight for improved acceleration
Ring gear is hardened to Rockwell 60 for great strength
Spin balanced for less strain on rotating components