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. ACT offers all the benefit of a premium quality light weight flywheel at an affordable price.
The ProLite is best for road racing applications and provides quick throttle response. All XACT Flywheels are CNC machined, heat treated for strength and precision balanced. Substantial material is left behind the clutch surface area for better heat dissipation and durability while weight savings is made where it matters the most for reduced inertia.
XACT flywheels are certified by ACT to meet SFI Spec. 1.1. This makes XACT Flywheels legal for competition when SFI Spec. 1.1 is required or recommended. XACT flywheels come complete with official SFI sticker and serial number as required for certification.
