2004-2021 Subaru STI XACT Flywheel Prolite - 11.8lbs

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.

FeelDramatically improved engine response and acceleration, mild to moderate gear rattleLifeHeat-treated forging for strength and toughness, induction-hardened ring gears for maximum lifeQualityOne piece construction allows less opportunity for failure and provides uniform efficient heat transfer from the clutch disc. No more warped inserts or loose ring gearsRecommended UseRecommended for race useACT DifferenceForged, CNC machined and dynamically computer balanced for smooth high RPM reliability