ACT XACT Prolite Clutch Flywheel - 2004-2021 Subaru Impreza WRX/STI (VA)

Specifications Item Description ACT XACT Prolite Clutch Flywheel Product Weight (lbs.) 11.8 Material Chromoly Steel Friction Surface Diameter (Inches) 9.4 Friction Surface Diameter (Millimeters) 240 Flywheel Type Prolite Tooth Quantity 124 Warranty 12 Months (view details) SFI 1.1 600240 is a Prolite flywheel, which is ACT's lighter flywheel offering with lowest inertia. Prolite flywheels are designed for best throttle response and acceleration. Prolite flywheels are preferred for road racing or rally racing, and have reduced drivability. Materials are properly distributed for maximum strength, good heat tolerance and rigidity. ACT flywheels are serviceable and can be resurfaced with no need to purchase additional parts. Features Feel Dramatically improved engine response and acceleration, mild to moderate gear rattle Life Heat-treated forging for strength and toughness, induction-hardened ring gears for maximum life Quality One piece construction allow