ACT XACT Prolite Flywheel 2004-2021 STI Discount

Description

The ACT XACT Prolite Flywheel is a lightweight, low-inertia flywheel engineered for high-performance applications. Crafted from chromoly steel, it’s designed to deliver the fastest throttle response and optimal acceleration for road racing, rally racing, and track use. Proper material distribution ensures strength, heat tolerance, and rigidity, while the one-piece construction provides uniform heat transfer and eliminates the risk of warped inserts or loose ring gears. Fully serviceable, this flywheel can be resurfaced without additional parts.

Specifications & Features:

• Material: Chromoly steel
• Friction Surface Diameter: 9.4 in / 240 mm
• Flywheel Type: Prolite
• Tooth Count: 124
• Weight: 11.8 lbs
• SFI Rating: 1.1

Performance Features:

• Feel: Dramatically improved engine response and acceleration, mild to moderate gear rattle
• Life: Heat-treated forging for strength and durability; induction-hardened ring gear for long life
• Quality: Forged, CNC-machined, dynamically balanced for high RPM reliability
• Recommended Use: Race-focused applications, including road and rally racing
• ACT Difference: Engineered for maximum performance, low inertia, and smooth operation under extreme conditions

Note:Prolite Flywheels are recommended for race applications and often can trigger a Check Engine Light. If using for Street, look into the StreetLite Flywheel. This ProLite Flywheel is 11.8 LBS.