Action Clutch Chromoly Lightweight Flywheel Subaru STI 2004-2021 | AC117FW

Product Fitment:

2004-2021 Subaru STI

The Action Clutch AC117FW Chromoly Flywheel is a precision-engineered lightweight performance flywheel designed specifically for 2004-2021 Subaru WRX STI models with the EJ257 2.5L turbo engine. This chromoly steel flywheel reduces rotating mass for improved throttle response and acceleration while maintaining the durability needed for high-performance driving and track use.

Key Features & Benefits

• Chromoly Steel Construction - Superior strength-to-weight ratio compared to standard cast iron flywheels
• Lightweight Design - Reduced rotational mass improves engine response and acceleration
• Precision Machined Surface - Ensures optimal clutch engagement and smooth operation
• Heat Treated - Enhanced durability and resistance to warping under extreme conditions
• Direct OEM Replacement - Bolt-on installation using factory mounting points

What's Included

• 1x Action Clutch AC117FW Chromoly Flywheel
• Hardware kit (bolts and fasteners)
• Installation instructions

Specifications

Fitment & Compatibility

This flywheel is specifically designed for 2004-2021 Subaru WRX STI models equipped with the EJ257 2.5L turbocharged boxer engine and all-wheel drive system. Compatible with both manual transmission variants during this production run. Verify your engine code before ordering to ensure proper fitment.

Installation

Professional installation is recommended as this requires transmission removal and proper torque specifications. Installation requires standard hand tools and access to a lift or suitable workspace. New clutch components are recommended when installing a new flywheel.