ACT 600890 Streetlite Flywheel 9.4in for 05-25 Subaru WRX/Impreza/Legacy

Vehicle Fitment

• 2005-2025 Subaru Impreza WRX & WRX STI (various trims; manual transmission)
• 2005-2012 Subaru Legacy GT / Legacy 2.5GT (2.5L H4 Turbo & 2.0/2.4L variants where applicable)
• 2005-2009 Subaru Outback XT / Forester XT (2.5L Turbo H4)
• 2006 Subaru Baja Turbo (2.5L H4 Turbo)
• *Fitment may require 240 mm ACT pressure plate & clutch disc combo on some late WRX models

Features

• ACT Streetlite lightweight performance flywheel for sharper throttle response
• Forged chromoly steel construction for durability and strength
• Dynamically balanced for smoother high-RPM operation and reduced vibration
• Induction-hardened 124-tooth ring gear for long life and improved starter engagement
• Significantly lower mass than stock to improve acceleration response
• One-piece design enhances heat transfer and reduces failure points
• Recommended for street driving and drag or performance use
• Serviceable and resurfacing capable without needing extra parts

Specifications

• Brand: ACT (Advanced Clutch Technology)
• Part Number: 600890
• Flywheel Type: XACT Streetlite performance flywheel
• Material: Forged chromoly steel
• Friction Surface Diameter: 9.4 in / 240 mm
• Weight: ~13.0 lb (approx.)
• SFI Rating: 1.1
• Tooth Quantity: 124
• Balance: Internal

Included Components

• 1x ACT Streetlite Flywheel (600890)
• 1x Pilot Bearing (PB1004) included
• Pressure Plate Bolts (M8-1.25 x 16 mm) included

Product Description

The **ACT 600890 Streetlite Flywheel** is a high-performance lightweight clutch flywheel engineered to improve throttle response, acceleration feel, and overall drivability in popular Subaru performance platforms like the WRX, Impreza, Legacy GT, Outback XT, and Forester XT. Compared to heavier factory flywheels, this forged chromoly unit reduces rotational mass, allowing the engine to rev more freely and deliver a more engaging driving experience - ideal for spirited street driving and mild racing applications.

Constructed from robust chromoly steel and dynamically computer-balanced, the ACT Streetlite flywheel features a durable induction-hardened ring gear and a one-piece design that improves thermal transfer and reduces potential failure points. Installation requires pairing with a 240 mm pressure plate and corresponding ACT clutch disc (not included), but ACT includes the pilot bearing and necessary flywheel bolts for convenience. Whether you're upgrading from stock or building a performance clutch setup, this flywheel offers reliable, street-ready performance gains while retaining serviceability for future maintenance.