ACT T1SS-S01 Mod-Twin 225 Sprung Clutch Kit for 2005-25 Subaru AWD

Vehicle Fitment

• 2005-2006 Subaru Legacy GT, Legacy GT Limited, Outback XT, Outback XT Limited (2.5L Turbo, AWD)
• 2006-2009 Subaru Baja Turbo, Forester XT/XT Limited (2.5L Turbo, AWD)
• 2006-2014 Subaru Impreza WRX / WRX Limited / WRX Premium / WRX TR (2.5L Turbo, AWD)
• 2010-2012 Subaru Legacy 2.5GT (2.5L Turbo, AWD)
• 2015-2025 Subaru WRX / WRX Limited / WRX Premium / WRX TS (2.0L FA20 & 2.4L FA24 Turbo, AWD)
• Fitment confirmed through 2025 - coverage includes major WRX AWD trims through 2025 models.

Features

• Mod-Twin dual-disc clutch design for enhanced torque capacity and heat tolerance
• Organic friction discs for smooth engagement and street-friendly performance
• Sprung Mono-Drive hub reduces driveline shock and extends input shaft life
• CNC-machined, dynamically balanced flywheel included
• Heavy-duty diaphragm pressure plate for consistent clamp load
• Fully rebuildable clutch kit design
• Light pedal effort with predictable engagement feel
• SFI 1.2 certified for safety and performance

Specifications

• Part Number: T1SS-S01
• Clutch Disc Diameter: 8.8" / 225 mm
• Disc Material: Organic
• Hub Style: Sprung Mono-Drive
• Input Shaft Diameter: 1.00" & 24 spline
• Pressure Plate: Heavy-duty diaphragm
• Torque Capacity: ~625 ft-lbs (~99% over OE)
• SFI Rating: 1.2

Included Components

• 1x Heavy-duty pressure plate with diaphragm spring
• 2x Organic friction discs
• 1x CNC-machined, dynamically balanced flywheel
• 1x Sprung Mono-Drive hub assembly
• 1x Floater plate
• 1x Monoloc alignment collar
• 1x Release bearing
• 1x Alignment tool and pilot bearing

Product Description

The ACT T1SS-S01 Mod-Twin 225 Heavy Duty Sprung Street Clutch Kit is engineered for high-performance Subaru AWD cars that demand enhanced torque capacity and reliable engagement over the stock clutch. Featuring dual organic friction discs and a sprung Mono-Drive hub, this kit offers increased surface area for heat absorption and longevity while maintaining a street-friendly pedal feel. Its heavy-duty diaphragm pressure plate and balanced flywheel deliver smooth power transfer and better durability for daily driving, spirited road use, or occasional track outings.

Designed to fit a wide range of turbocharged Subaru platforms from early Legacy and Outback XT models to modern WRX trims through the 2025 model year, the ACT Mod-Twin clutch is fully rebuildable, allowing key components to be replaced rather than requiring a full kit swap. This makes it a versatile, long-term upgrade for enthusiasts looking to improve their AWD drivetrain's clutch performance without sacrificing everyday usability. Installation is direct-fit for compatible models and includes all essential mechanical components except hydraulic master/slave parts.