ACT Xtreme Street Clutch Kit with Flywheel - SB11-XTSS

240mm Conversion Kit | 532 ft-lb | Organic Sprung Disc | Streetlite Flywheel

The ACT SB11-XTSS Xtreme Performance Street Sprung kit combines a matched 240mm clutch and Streetlite flywheel for the listed Subaru conversion applications. Rated for 532 ft-lb at the engine, the Xtreme pressure plate supplies increased clamping force while an organic disc keeps engagement progressive. Its sprung hub cushions torsional vibration, and steel-backed friction lining supports heat transfer and durability during demanding use. The required flywheel, release bearing, pilot bearing, alignment tool, and pressure plate bolts are included. Expect greater pedal effort from the Xtreme pressure plate and follow the conversion notes, including compatibility with the revised factory 240mm components introduced in the 2018 WRX.

Key Features & Specs:

• Brand: ACT
• Part Number: SB11-XTSS
• Clutch Configuration: Single disc
• Disc Series: Performance Street Sprung
• Product Weight: 28.6 lb
• Torque Capacity at Engine/Crank: 532 ft-lb
• Torque Capacity Increase over OE: 72%
• Pressure Plate Type: Xtreme
• Clutch Disc Diameter: 240 mm
• Input Spline Count: 24
• Input Shaft Diameter: 1 in
• Disc Material: Organic
• Flywheel Included: Yes
• Release Bearing Included: Yes
• Alignment Tool Included: Yes
• Flywheel Type: Streetlite
• Grease Included: Yes
• Disc Hub: Sprung
• Clutch Slave Cylinder Included: No
• Clutch Master Cylinder Included: No
• Grade Type: Performance
• Pressure Plate Bolts Included: Yes
• Flywheel Bolts Included: No
• Pilot Bearing Included: Yes
• Pilot Bushing Included: No
• Feature: Four-stage heat-treated pressure plate diaphragm
• Feature: Precision cover stampings support rigidity and consistency
• Feature: Copper-containing organic friction material supports heat transfer
• Feature: Steel-backed friction lining supports strength and durability
• Feature: Reduced engagement cushioning supports quicker shift action
• Pressure Plate and Disc Assembly: Included

Fitment:

• 2006 Subaru Baja Turbo
• 2008 Subaru Forester Sports 2.5 XT
• 2006-2008 Subaru Forester XT Limited
• 2006-2014 Subaru Impreza WRX
• 2006-2007,2010-2014 Subaru Impreza WRX Limited
• 2009-2014 Subaru Impreza WRX Premium
• 2006-2007 Subaru Impreza WRX TR
• 2005-2006 Subaru Legacy GT
• 2005,2007-2009 Subaru Legacy GT Limited
• 2006-2009 Subaru Legacy GT spec.B
• 2005-2006 Subaru Outback XT
• 2005-2009 Subaru Outback XT Limited
• 2015-2024 Subaru WRX Base; ACT conversion assembly required; do not mix with revised factory 240mm components introduced at VIN J806877 during the 2018 model year.
• 2015-2026 Subaru WRX Limited; ACT conversion assembly required; do not mix with revised factory 240mm components introduced at VIN J806877 during the 2018 model year.
• 2015-2026 Subaru WRX Premium; ACT conversion assembly required; do not mix with revised factory 240mm components introduced at VIN J806877 during the 2018 model year.
• 2026 Subaru WRX Series.Yellow; ACT conversion assembly required; do not mix with revised factory 240mm components introduced at VIN J806877 during the 2018 model year.
• 2024 Subaru WRX TR; ACT conversion assembly required; do not mix with revised factory 240mm components introduced at VIN J806877 during the 2018 model year.
• 2025-2026 Subaru WRX TS; ACT conversion assembly required; do not mix with revised factory 240mm components introduced at VIN J806877 during the 2018 model year.

Notes:

• Conversion Kit. Replaces original 230mm clutch. Must use ACT Flywheel (included in kit). Subaru has incorporated 240mm clutch components into production during mid-2018MY production starting with VIN J806877. ACT clutch kits and flywheels are not compatible with the revised OEM components. Pressure plate bolts included (M8-1.25 x 16mm).
• 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