ACT Mod-Twin Xtreme Street Clutch Kit 2004-2021 Subaru STI - T2S-S05

225mm Twin Disc | 875 ft-lb | Organic | 2004-2021 Subaru WRX STI

The ACT T2S-S05 Mod-Twin 225 Xtreme Sprung Street clutch kit is built for a high-output Subaru STI that still needs controlled engagement on the road. Its twin organic friction plates provide an 875 ft-lb engine torque rating, while both plates transfer torque through one spring-centered Mono-Drive hub to cushion drivetrain vibration and reduce spline loading. Steel-backed organic friction surfaces manage heat, and the modular assembly can be rebuilt as its service components wear. The package includes a matched flywheel, release bearing, pilot bearing, alignment tool, and Monoloc collar. ACT describes this street version as offering progressive engagement and a light pedal feel, with some transmission gear noise possible.

Key Features & Specs:

• Brand: ACT
• Part Number: T2S-S05
• Clutch Configuration: Twin disc
• Series: Mod-Twin 225 Sprung Street
• Product Weight: 28.1 lb
• SFI Rating: 1.2
• Torque Capacity at Engine/Crank: 875 ft-lb
• Torque Capacity Increase over OE: 146%
• Flywheel Included: Yes
• Pilot Bushing Included: No
• Pressure Plate Type: Xtreme
• Release Bearing Included: Yes
• Clutch Disc Diameter: 225 mm
• Disc Material: Organic
• Input Spline Count: 24
• Input Shaft Diameter: 1 in
• Alignment Tool Included: Yes
• Grease Included: Yes
• Pilot Bearing Included: Yes
• Disc Hub: Sprung
• Clutch Slave Cylinder Included: No
• Clutch Master Cylinder Included: No
• Grade Type: Performance
• Flywheel Bolts Included: No
• Pressure Plate Bolts Included: No
• Feature: Rebuildable modular Mod-Twin 225 assembly
• Feature: Two organic friction plates share one sprung Mono-Drive hub
• Feature: Four-stage heat-treated diaphragm spring
• Feature: Monoloc release-bearing collar included
• Feature: Four-stage heat-treated pressure plate diaphragm
• Feature: Steel-backed friction lining supports strength and durability
• Pressure Plate and Disc Assembly: Included

Fitment:

• 2004-2014 Subaru Impreza WRX STI — 2.5L H4, 2458cc
• 2007,2011-2014 Subaru Impreza WRX STI Limited — 2.5L H4, 2458cc
• 2010 Subaru Impreza WRX STI Special Edition — 2.5L H4, 2458cc
• 2015-2021 Subaru WRX STI Base — 2.5L H4, 2458cc
• 2015 Subaru WRX STI Launch Edition — 2.5L H4, 2458cc
• 2015-2021 Subaru WRX STI Limited — 2.5L H4, 2458cc
• 2019 Subaru WRX STI S209 — 2.5L H4, 2458cc
• 2016 Subaru WRX STI Series.HyperBlue — 2.5L H4, 2458cc
• 2018 Subaru WRX STI Type RA — 2.5L H4, 2458cc

Notes:

• This street kit uses organic friction material. Follow the ACT installation and organic-disc break-in instructions.
• ACT recommends 300-500 miles of mild engagement for organic street discs before spirited driving or racing. Follow the application-specific installation instructions.

California Proposition 65: Warning: This product can expose you to chemicals including carbon black, glass wool fibers, or silica (in clutch discs), chromium and nickel, which are known to the State of California to cause cancer or birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov