EXEDY Racing Flywheels are made from solid one piece billet chromoly
steel forgings. They are specifically designed to reduce weight and
inertia for better engine response. Most incorporate special design
features to enhance air flow to improve the cooling of the clutch. The
ring gear teeth are milled onto the flywheel unlike an aluminum
flywheel where the ring gear is pressed onto the flywheel and have the
possibility of separating.