600240 is an ACT XACT Prolite flywheel, built for dramatically improved engine response and acceleration with mild to moderate gear rattle. It starts from a heat-treated forging for strength and toughness, with an induction-hardened ring gear for maximum life. One-piece construction reduces the chance of failure and provides uniform, efficient heat transfer away from the clutch disc, eliminating warped inserts or loose ring gears. It is forged, CNC machined, and dynamically computer balanced for smooth high-RPM reliability, and is recommended for race use.
Installation InstructionsWarranty
Specifications:
- Flywheel Type: XACT Prolite, lightweight one-piece forged flywheel
- Heat-treated forging with induction-hardened ring gear for maximum ring gear life
- One-piece construction for uniform heat transfer and reduced failure points versus multi-piece designs
- CNC machined and dynamically computer balanced for high-RPM reliability
- Mild to moderate gear rattle; recommended for race use
- Backed by ACT's one-year limited warranty
- Part Number: 600240
Vehicle Applications:
- 2004 Subaru Impreza WRX STI
- 2005 Subaru Impreza WRX STI
- 2006 Subaru Impreza WRX STI
- 2007 Subaru Impreza WRX STI
- 2008 Subaru Impreza WRX STI
- 2009 Subaru Impreza WRX STI
- 2010 Subaru Impreza WRX STI
- 2011 Subaru Impreza WRX STI
- 2012 Subaru Impreza WRX STI
- 2013 Subaru Impreza WRX STI
- 2014 Subaru Impreza WRX STI
- 2007 Subaru Impreza WRX STI Limited
- 2011 Subaru Impreza WRX STI Limited
- 2012 Subaru Impreza WRX STI Limited
- 2013 Subaru Impreza WRX STI Limited
- 2014 Subaru Impreza WRX STI Limited
- 2010 Subaru Impreza WRX STI Special Edition
- 2007 Subaru Legacy GT spec.B
- 2008 Subaru Legacy GT spec.B
- 2009 Subaru Legacy GT spec.B
- 2015 Subaru WRX STI
- 2016 Subaru WRX STI
- 2017 Subaru WRX STI
- 2018 Subaru WRX STI
- 2019 Subaru WRX STI
- 2020 Subaru WRX STI
- 2021 Subaru WRX STI
- 2015 Subaru WRX STI Launch Edition
- 2015 Subaru WRX STI Limited
- 2016 Subaru WRX STI Limited
- 2017 Subaru WRX STI Limited
- 2018 Subaru WRX STI Limited
- 2019 Subaru WRX STI Limited
- 2020 Subaru WRX STI Limited
- 2021 Subaru WRX STI Limited
- 2019 Subaru WRX STI S209
- 2016 Subaru WRX STI Series.HyperBlue
- 2018 Subaru WRX STI Type RA
FAQ
What is the difference between a Prolite and Streetlite flywheel?
Prolite is ACT's lighter-weight flywheel option, giving the most dramatic improvement in engine response and acceleration but with mild to moderate gear rattle, and it is recommended for race use. Streetlite is a heavier alternative built for street and race use with less gear rattle.
Why is one-piece construction important on a flywheel?
One-piece construction removes the extra joints found in multi-piece flywheels, which lowers the chance of failure and lets heat transfer away from the clutch disc more evenly.
Does this flywheel need to be balanced after installation?
No, ACT CNC machines and dynamically computer balances every XACT flywheel at the factory for high-RPM reliability.
Is this flywheel suitable for daily street driving?
ACT recommends the Prolite flywheel primarily for race use because of its mild to moderate gear rattle; drivers who want a quieter street-focused option should consider ACT's Streetlite flywheel instead.
