ACT Prolite Flywheel for 2004-2021 STI

Experience enhanced engine response and acceleration with mild to moderate gear rattle. Our clutch features heat-treated forging for durability, induction-hardened ring gears for longevity, and one-piece construction for reduced failure risk and uniform heat transfer. Say goodbye to warped inserts and loose ring gears. Ideal for race applications, forged, CNC machined, and dynamically balanced for smooth, reliable high RPM performance.

More Info:
The XACT Prolite flywheel 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.

Specs:
• Weight: 11.8 pounds
• OEM Flywheel: 18.9 pounds
• Material: Chromoly Steel
• Tooth Quantity: 124
• Pilot Bearing (PB1004) included

Features:
• Dramatically improved engine response and acceleration, mild to moderate gear rattle.
• Heat-treated forging for strength and toughness, induction-hardened ring gears for maximum life.
• One piece construction allows less opportunity for failure and provides uniform efficient heat transfer from the clutch disc. No more warped inserts or loose ring gears.
• Recommended for race use.
• Forged, CNC machined and dynamically computer balanced for smooth high RPM reliability.

Vehicle Fitment:
2004-2021 Subaru STi