Most stock flywheels are heavy cast iron parts designed for optimum street drivability by soaking up some of the power from the engine and putting it in storage in the form of inertia. Although this may be important for transporting the groceries, this drivability comes at the expense of engine response and acceleration. Light weight flywheels keep less inertia in storage but the lighter rotating mass provides significantly improved engine response and acceleration characteristics. Until now most aftermarket flywheels for sport compact vehicles presented certain undesirable concessions to the user. Many are too light or fragile for the application, others have reliability issues and all are very expensive. Finally, ACT offers exactly what performance enthusiasts need: all the benefits of a premium quality light weight flywheel at an affordable price.