ACT Xtreme Street Clutch Kit Subaru STI/Legacy - SB10-XTSS

240mm | 598 ft-lb | 2004-2021 STI | 2007-2009 Legacy GT spec.B

The ACT SB10-XTSS Xtreme Performance Street Sprung clutch kit raises holding capacity to 598 ft-lb at the engine for the listed Subaru STI and Legacy GT spec.B applications. It pairs an Xtreme pressure plate with a 240mm organic disc, giving a higher-output build the heat management and progressive engagement characteristics of ACT's street friction material. The sprung hub cushions torsional vibration, and steel-backed lining strengthens the friction assembly. ACT includes a Monoloc collar, release bearing, pilot bearing, alignment tool, and grease. The Xtreme pressure plate increases pedal effort, so consider that alongside the torque rating when choosing the kit for your driving needs.

Key Features & Specs:

• Brand: ACT
• Part Number: SB10-XTSS
• Clutch Configuration: Single disc
• Disc Series: Performance Street Sprung
• Product Weight: 18.2 lb
• Torque Capacity at Engine/Crank: 598 ft-lb
• Torque Capacity Increase over OE: 68%
• Pressure Plate Type: Xtreme
• Clutch Disc Diameter: 240 mm
• Input Spline Count: 24
• Input Shaft Diameter: 1 in
• Disc Material: Organic
• Pilot Bushing Included: No
• Release Bearing Included: Yes
• 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
• Pressure Plate Bolts Included: No
• Flywheel Bolts Included: No
• Monoloc Collar Included: Yes
• 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:

• 2004-2014 Subaru Impreza WRX STI
• 2007,2011-2014 Subaru Impreza WRX STI Limited
• 2010 Subaru Impreza WRX STI Special Edition
• 2007-2009 Subaru Legacy GT spec.B
• 2015-2021 Subaru WRX STI Base
• 2015 Subaru WRX STI Launch Edition
• 2015-2021 Subaru WRX STI Limited
• 2019 Subaru WRX STI S209
• 2016 Subaru WRX STI Series.HyperBlue
• 2018 Subaru WRX STI Type RA

Notes:

• Includes ACT Monoloc.
• 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