Most Stock flywheels are heavy cast iron and are designed for optimum drivability by storing some of the engine’s power in the form of inertia.

ACT pro lite flywheels provide significantly improved engine response and acceleration by compromising drivability.

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 Prolite flywheels are certified by ACT to meet SFI Spec. 1.1. This makes XACT Flywheels Prolite 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.