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Contact SupplierLow Moment of Inertia (M.O.I.) flexplates are a way of getting a lightweight racing clutch mounted on your racecar, while using a starter located in the stock location, turning a stock diameter ring gear. These flexplates are used in combination with a lightweight button style flywheel that is approximately the same diameter as the racing clutch being mounted. The flywheels are called button style flywheels due to their small `button-like' size. Button flywheels & low M.O.I. flexplates are lighter than a one piece flywheel. They are lighter in price as well. If your rules dictate a stock diameter ring gear, this set-up has a high level of performance and a lot of `bang for the buck'.
PTT's Low M.O.I. Flexplates are engineered to make the most of lightweight racing clutches. These flexplates vary slightly by application, but all of them have reduced thickness, premium quality, and hardened ring gears. The reduced thickness translates to lower rotating weight & faster acceleration, while still offering great reliability & long life. They are robotically welded to a steel center plate made from a high tensile, fatigue resistant alloy that is perfectly matched to high r.p.m. racecar use.