ACT SB11-HDSS Heavy Duty Performance Street Sprung Clutch Kit for Subaru Legacy and Impreza 5-Speed

SB11-HDSS kit features ACT's most popular Heavy Duty pressure plate and most popular street disc. ACT Heavy Duty pressure plates use exclusive diaphragm design to increase clamp load, reduce deflection and maximize clutch life. All diaphragms endure a four-stage, heat-treating process for unparalleled performance. ACT pressure plates have precision cover stampings to provide rigidity and consistency. ACT's Performance Street discs feature premium organic materials with high copper content for better heat transfer and steel-backed lining for greater burst strength and durability. These discs have reduced marcel for faster shift action to complement ACT pressure plates, with increased strength and reliability. HD/Perf Street Sprung Light to moderate pedal effort, smooth positive engagement, OE to mild gear rattle; Longer friction life, extended by ACT's exclusive diaphragm design; Carefully engineered, precisely assembled, accurately balanced, with premium organic friction materials for heat tolerance and reduced fade; Recommended for street and race use; 100% clamp load tested and dynamically computer balanced for smooth high RPM reliability

• "Excellence in Performance", backed by the best one-year warranty in the industry!

The ACT SB11-HDSS Heavy Duty Performance Street Sprung Clutch Kit is engineered for Subaru Legacy and Impreza models equipped with a 5-speed manual transmission. This complete kit combines ACT’s Heavy Duty pressure plate with a Performance Street sprung disc to provide reliable clamping force, smooth engagement, and dependable performance for daily driving, spirited street use, and select racing applications.

The ACT Heavy Duty pressure plate uses an exclusive diaphragm design to increase clamp load, reduce deflection, and help extend clutch life. Each diaphragm undergoes a four-stage heat-treating process, while precision cover stampings improve rigidity and consistency. The Performance Street disc uses premium organic friction material with high copper content for improved heat transfer, plus steel-backed lining for increased burst strength and durability. Reduced marcel supports faster shift action while maintaining a smooth, positive engagement and light to moderate pedal effort.

Every ACT SB11-HDSS kit is carefully engineered, precisely assembled, accurately balanced, 100% clamp-load tested, and dynamically computer balanced for reliable operation at high engine speeds. The kit is designed to deliver extended friction life, heat tolerance, reduced fade, and OE-like drivability with mild gear rattle. It is recommended for street and race use and is supported by ACT’s one-year warranty. Confirm vehicle application and transmission compatibility before installation.

Product Specifications & Technical Data

• Brand: ACT
• Part Number: SB11-HDSS
• Clutch Type: Heavy Duty pressure plate with Performance Street sprung disc
• Transmission Compatibility: 5-speed manual transmission
• Disc Friction Material: Premium organic material with high copper content
• Disc Construction: Steel-backed lining for added strength and durability
• Balancing: Dynamically computer balanced and 100% clamp-load tested
• Recommended Use: Street driving, performance applications, and racing

What’s Included

• ACT Heavy Duty pressure plate
• ACT Performance Street sprung clutch disc
• Clutch kit components supplied by the manufacturer
• ACT one-year limited warranty coverage

Fitment includes select 2005–2009 Subaru Legacy and 2006–2007 Subaru Impreza models with a 5-speed manual transmission. Verify the exact year, model, engine, drivetrain, and transmission before ordering.

Features:

• Heavy Duty Clamping: ACT’s exclusive diaphragm design increases clamp load, reduces deflection, and helps maximize clutch service life.
• Smooth Street Engagement: Performance Street organic friction material provides light to moderate pedal effort and smooth, positive engagement.
• Heat and Fade Resistance: High copper content improves heat transfer, while premium organic material helps withstand heat and reduce fade.
• High-Speed Reliability: Precision assembly, computer balancing, and 100% clamp-load testing support dependable operation at high engine speeds.

Fitments:
2005 Subaru Legacy GT
2005 Subaru Legacy GT Limited
2005 Subaru Outback XT
2005 Subaru Outback XT Limited
2006 Subaru Baja Turbo
2006 Subaru Forester XT Limited
2006 Subaru Impreza WRX
2006 Subaru Impreza WRX Limited
2006 Subaru Impreza WRX TR
2006 Subaru Legacy GT
2006 Subaru Legacy GT spec.B
2006 Subaru Outback XT
2006 Subaru Outback XT Limited
2007 Subaru Forester XT Limited
2007 Subaru Impreza WRX
2007 Subaru Impreza WRX Limited
2007 Subaru Impreza WRX TR
2007 Subaru Legacy GT Limited
2007 Subaru Legacy GT spec.B
2007 Subaru Outback XT Limited
2008 Subaru Forester Sports 2.5 XT
2008 Subaru Forester XT Limited
2008 Subaru Impreza WRX
2008 Subaru Legacy GT Limited
2008 Subaru Legacy GT spec.B
2008 Subaru Outback XT Limited
2009 Subaru Impreza WRX
2009 Subaru Impreza WRX Premium
2009 Subaru Legacy GT Limited
2009 Subaru Legacy GT spec.B
2009 Subaru Outback XT Limited
2010 Subaru Impreza WRX
2010 Subaru Impreza WRX Limited
2010 Subaru Impreza WRX Premium
2011 Subaru Impreza WRX
2011 Subaru Impreza WRX Limited
2011 Subaru Impreza WRX Premium
2012 Subaru Impreza WRX
2012 Subaru Impreza WRX Limited
2012 Subaru Impreza WRX Premium
2013 Subaru Impreza WRX
2013 Subaru Impreza WRX Limited
2013 Subaru Impreza WRX Premium
2014 Subaru Impreza WRX
2014 Subaru Impreza WRX Limited
2014 Subaru Impreza WRX Premium
2015 Subaru WRX Base
2015 Subaru WRX Limited
2015 Subaru WRX Premium
2016 Subaru WRX Base
2016 Subaru WRX Limited
2016 Subaru WRX Premium
2017 Subaru WRX Base
2017 Subaru WRX Limited
2017 Subaru WRX Premium
2018 Subaru WRX Base
2018 Subaru WRX Limited
2018 Subaru WRX Premium
2019 Subaru WRX Base
2019 Subaru WRX Limited
2019 Subaru WRX Premium
2020 Subaru WRX Base
2020 Subaru WRX Limited
2020 Subaru WRX Premium
2021 Subaru WRX Base
2021 Subaru WRX Limited
2021 Subaru WRX Premium
2022 Subaru WRX Base
2022 Subaru WRX Limited
2022 Subaru WRX Premium
2023 Subaru WRX Base
2023 Subaru WRX Limited
2023 Subaru WRX Premium
2024 Subaru WRX Base
2024 Subaru WRX Limited
2024 Subaru WRX Premium
2024 Subaru WRX TR
2025 Subaru WRX Limited
2025 Subaru WRX Premium
2025 Subaru WRX TS
2026 Subaru WRX Limited
2026 Subaru WRX Premium
2026 Subaru WRX Series.Yellow
2026 Subaru WRX TS

Air Freight Prohibited: false
Not Carb Approved: false
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: N/A
Carb Acknowledgement Required: false
Regular Stock: t
Units Per Sku: 1