The ACT XACT Flywheel Prolite is a lightweight, one-piece forged flywheel built for race use, delivering dramatically improved engine response and acceleration with mild-to-moderate gear rattle. The forging is heat-treated for strength and toughness, and the ring gear is induction-hardened for maximum service life. One-piece construction eliminates the failure points found in multi-piece flywheels and provides uniform, efficient heat transfer away from the clutch disc, so there are no warped inserts or loose ring gears to deal with. Each flywheel is forged, CNC-machined, and dynamically computer-balanced for smooth, reliable operation at high RPM.
Warranty
Installation Instructions
Backed by ACT's one-year "Excellence in Performance" warranty.
Specifications
- Product Type: XACT Flywheel Prolite
- Construction: One-piece forged, CNC-machined, dynamically computer-balanced
- Ring Gear: Induction-hardened for extended service life
- Recommended Use: Race
- Gear Rattle: Mild to moderate
- Part Number: 600555
Vehicle Applications
- 2015 Mitsubishi Lancer Evolution Final Edition
- 2008 Mitsubishi Lancer Evolution GSR
- 2010 Mitsubishi Lancer Evolution GSR
- 2011 Mitsubishi Lancer Evolution GSR
- 2012 Mitsubishi Lancer Evolution GSR
- 2013 Mitsubishi Lancer Evolution GSR
- 2014 Mitsubishi Lancer Evolution GSR
- 2015 Mitsubishi Lancer Evolution GSR
Frequently Asked Questions
What does the ACT 600555 flywheel fit?
The 600555 fits the 2015 Mitsubishi Lancer Evolution Final Edition and the 2008, 2010-2015 Evolution GSR.
How is the Prolite different from the Streetlite version of this flywheel (600550)?
The Prolite (600555) is a lighter, race-only flywheel with mild-to-moderate gear rattle for dramatically improved throttle response, while the Streetlite (600550) is tuned for street and race use with OE-to-mild gear rattle. Choose Prolite for a dedicated track car.
Does the 600555 flywheel include a pressure plate and disc?
No. The 600555 is a flywheel only. ACT recommends pairing it with an ACT pressure plate and disc for a complete, matched clutch system.
What warranty comes with the ACT 600555?
ACT backs the 600555 flywheel with a one-year warranty.
