ACT ProLite Flywheel - 2004-2021 Subaru STI

Spectral Performance proudly carries a great selection of quality drivetrain upgrades brought to you by Advanced Clutch Technology.

On this page, you are looking at the ACT ProLite Flywheel. Lightweight flywheels are a great way to remove some of the rotational mass in the engine which produces faster revs along with more power and performance.

DETAILS:

• Properly distributed for maximum strength, lower inertia, along with good heat tolerance and rigidity
• Precision machined threads
• Engineered with the latest CAD and Finite Element Analysis software
• Hot-forged Chromoly steel
• CNC machined and dynamically computer balanced for super smooth high RPM reliability
• Recommended for race applications and can often trigger a CEL
• Weighs 11.1 lbs
• Quickens revs
• Improves power
• Improves acceleration