The ACT Prolite Flywheel (Part Number 600240) is a lightweight, high-performance upgrade engineered for 2007–2015 Subaru Legacy, Impreza, and WRX STI models. Constructed from heat-treated forged material, this flywheel delivers superior strength and reduced rotational mass to enhance throttle response, acceleration, and overall engine performance. Its one-piece design eliminates weak points while ensuring efficient, even heat transfer from the clutch disc for consistent and smooth power delivery.
The Prolite Flywheel is CNC machined and dynamically balanced to guarantee stability and reliability during high-RPM operation. Its induction-hardened ring gear offers long-term durability, making it ideal for road racing and rally environments where performance consistency and toughness are essential. The optimized material distribution provides rigidity and heat tolerance under intense driving conditions, preventing warping and maintaining balance even in extended high-stress use.
Serviceable and resurfaceable, the ACT Prolite Flywheel offers easy maintenance and long-term value. While its ultra-lightweight design may produce mild to moderate gear rattle, this is a common trade-off for the substantial gains in responsiveness and engine immediacy it provides. Whether used for competition or spirited street driving, this flywheel stands as a proven choice for drivers seeking maximum engine performance without compromising reliability.
Features:
- Lightweight design with low inertia for quick throttle response
- Heat-treated forging for maximum strength and toughness
- Induction-hardened ring gear for extended durability
- One-piece construction reduces failure risk and promotes heat transfer
- CNC machined and dynamically balanced for high RPM reliability
- Serviceable design allows resurfacing without additional parts
- Optimized material distribution for heat tolerance and rigidity
- Suitable for road racing and rally applications
Fitment:
2004 Subaru Impreza WRX STI
2005 Subaru Impreza WRX STI
2006 Subaru Impreza WRX STI
2007 Subaru Impreza WRX STI
2007 Subaru Impreza WRX STI Limited
2007 Subaru Legacy GT spec.B
2008 Subaru Impreza WRX STI
2008 Subaru Legacy GT spec.B
2009 Subaru Impreza WRX STI
2009 Subaru Legacy GT spec.B
2010 Subaru Impreza WRX STI
2010 Subaru Impreza WRX STI Special Edition
2011 Subaru Impreza WRX STI
2011 Subaru Impreza WRX STI Limited
2012 Subaru Impreza WRX STI
2012 Subaru Impreza WRX STI Limited
2013 Subaru Impreza WRX STI
2013 Subaru Impreza WRX STI Limited
2014 Subaru Impreza WRX STI
2014 Subaru Impreza WRX STI Limited
2015 Subaru WRX STI Base
2015 Subaru WRX STI Launch Edition
2015 Subaru WRX STI Limited
2016 Subaru WRX STI Base
2016 Subaru WRX STI Limited
2016 Subaru WRX STI Series.HyperBlue
2017 Subaru WRX STI Base
2017 Subaru WRX STI Limited
2018 Subaru WRX STI Base
2018 Subaru WRX STI Limited
2018 Subaru WRX STI Type RA
2019 Subaru WRX STI Base
2019 Subaru WRX STI Limited
2019 Subaru WRX STI S209
2020 Subaru WRX STI Base
2020 Subaru WRX STI Limited
2021 Subaru WRX STI Base
2021 Subaru WRX STI Limited
