Action Clutch 04-21 Subaru WRX STI 2.5L (EJ257) Turbo AWD Chromoly Lightweight Flywheel

Action Clutch Chromoly Lightweight Flywheels are the perfect upgrade for light to high tuned street and race vehicles. Our Chromoly Lightweight Flywheels stand up to extreme use and have increased durability through our heat treatment process. Action Clutch Chromoly Lightweight Flywheels have been tested up to 18,000 RPM, so they can truly last. You'll get low weight, superior engine response, and high thermal capacity—plus, it's resurfacable, giving it an even longer life span. You should note that noise, vibration and harshness (NVH) may be introduced due to the reduction of rotational mass. Chromoly Lightweight Flywheel for Subaru Legacy GT Spec B 2007-2009 2.5L DOHC (EJ255) Turbo AWD

Upgrade your Subaru WRX STI with the Action Clutch AC117FW Chromoly Lightweight Flywheel, engineered for demanding street, performance, and race applications. This lightweight flywheel is designed for select 2004–2021 Subaru WRX STI models equipped with the 2.5L DOHC EJ257 turbocharged engine and all-wheel drive. By reducing rotational mass, it helps improve engine response, acceleration feel, and throttle responsiveness.

Manufactured from durable chromoly steel, the Action Clutch AC117FW uses a heat-treatment process to enhance strength and thermal capacity under extreme operating conditions. The flywheel has been tested at speeds up to 18,000 RPM, providing confidence for high-performance driving and competition use. Its robust construction is intended to withstand the increased demands associated with upgraded power levels and aggressive clutch engagement.

Feature: Lightweight chromoly construction helps reduce rotational mass and improve engine response. Feature: Heat-treated design enhances durability and resistance to demanding temperatures. Feature: Tested up to 18,000 RPM for high-performance street and race applications. Feature: High thermal capacity supports repeated performance use. Feature: Resurfaceable friction surface helps extend service life when properly maintained. Feature: Designed for compatible Subaru WRX STI 2.5L EJ257 turbo AWD applications.

Because this flywheel reduces rotational mass, some vehicles may experience increased noise, vibration, and harshness compared with the original equipment flywheel. Proper installation should be performed by a qualified technician, with clutch compatibility and vehicle application verified before installation. This product is intended for automotive performance use and may carry California Proposition 65 warnings.

Features:

• Lightweight chromoly construction helps reduce rotational mass and improve engine response
• Heat-treated design enhances durability and resistance to demanding operating temperatures
• Tested up to 18,000 RPM for high-performance street and race applications
• High thermal capacity supports repeated performance use
• Resurfaceable friction surface helps extend service life
• Designed for compatible Subaru WRX STI 2.5L EJ257 turbo AWD applications
• Reduced rotational mass may increase noise, vibration, and harshness

Fitment:
Subaru Impreza WRX STI 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 Legacy GT spec.B 2007
Subaru Legacy GT spec.B 2008
Subaru Legacy GT spec.B 2009
Subaru WRX STI Base 2015
Subaru WRX STI Base 2016
Subaru WRX STI Base 2017
Subaru WRX STI Base 2018
Subaru WRX STI Base 2019
Subaru WRX STI Base 2020
Subaru WRX STI Base 2021
Subaru WRX STI Launch Edition 2015
Subaru WRX STI Limited 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 S209 2019
Subaru WRX STI Series.HyperBlue 2016
Subaru WRX STI Type RA 2018