ACT SB10-HDSS Heavy Duty Street Sprung Clutch Kit for Subaru Impreza and Legacy 6-Speed

SB10-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 are the most popular disc purchased. They feature premium organic materials with high copper content for better heat transfer and steel-backed lining for greater burst strength and durability. These discs feature a reduced marcel for faster shift action to complement ACT pressure plates. Quiet operation with increased strength and reliability. Monoloc is a one-piece, direct replacement or upgrade to the standard, two-piece wedge collar and wire ring featured in pull-type clutches. The spring tension of the segmented retaining ring is carefully calculated and tested for optimal performance. It provides uniform loading on the bearing and pressure plate to assure proper alignment, regardless of driver influence or vehicle modifications. Monoloc's hardened chrome-moly steel construction will provide years of service. HD-M/Perf Street Sprung Light to moderate pedal effort, smooth positive engagement, OE to mild gear rattle, confidence during hard shifts; Longer friction life, extended by ACT's exclusive diaphragm design, dramatic improvement in release mechanism life; Carefully engineered, precisely assembled, accurately balanced, with premium organic friction materials for heat tolerance and reduced fade, major improvement in release mechanism; Recommended for street and race use; 100% clamp load tested and dynamically computer balanced for smooth high RPM reliability, includes ACT's patented Monoloc

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

The ACT SB10-HDSS Heavy Duty Street Sprung Clutch Kit is engineered for Subaru drivers who need dependable clutch performance for daily driving, spirited street use, and demanding shifts. This kit combines ACT’s Heavy Duty pressure plate with a Performance Street sprung disc, providing increased clamp load, consistent engagement, and improved clutch durability over standard equipment. It is designed for compatible 6-speed applications and includes ACT’s patented Monoloc release bearing collar system.

The Heavy Duty pressure plate uses ACT’s exclusive diaphragm design to increase clamp load, reduce deflection, and maximize clutch life while maintaining light to moderate pedal effort. Each diaphragm undergoes a four-stage heat-treating process, and the precision-stamped cover helps maintain rigidity and consistent operation. The Performance Street disc uses premium organic friction material with high copper content for improved heat transfer, along with steel-backed linings for greater burst strength and durability. Its reduced marcel supports faster shift action while maintaining smooth, positive engagement and quiet operation.

ACT’s Monoloc is a one-piece replacement or upgrade for the standard two-piece wedge collar and wire ring used in pull-type clutch systems. Constructed from hardened chrome-moly steel, it provides uniform loading on the bearing and pressure plate for proper alignment, even with driver input or vehicle modifications. The assembly is carefully engineered, precisely assembled, accurately balanced, and 100% clamp-load tested for reliable high-RPM operation. Recommended for street and race use, this ACT clutch kit is backed by a one-year warranty.

Fitment includes select 2007–2009 Subaru Legacy and 2011–2014 Subaru Impreza models equipped with a 6-speed manual transmission. Verify vehicle year, engine, transmission, and application details before ordering. This product carries a California Proposition 65 warning.

What's Included

• Heavy Duty pressure plate
• Performance Street sprung clutch disc
• ACT Monoloc release bearing collar system
• Installation components as supplied by ACT

Features:

• Heavy Duty Pressure Plate: ACT’s exclusive diaphragm design increases clamp load, reduces deflection, and supports extended clutch life.
• Performance Street Sprung Disc: Premium organic friction material with high copper content improves heat transfer, shift response, and fade resistance.
• Durable Construction: Steel-backed disc linings and precision pressure plate cover stampings provide added strength, rigidity, and reliability.
• Monoloc Release System: Hardened chrome-moly steel construction provides uniform bearing and pressure plate loading for consistent pull-type clutch alignment.

Fitments:
2004 Subaru Impreza WRX STI
2005 Subaru Impreza WRX STI
2006 Subaru Impreza WRX STI
2007 Subaru Impreza WRX STI
2007 Subaru Impreza WRX STI Limited
2007 Subaru Legacy GT spec.B
2008 Subaru Impreza WRX STI
2008 Subaru Legacy GT spec.B
2009 Subaru Impreza WRX STI
2009 Subaru Legacy GT spec.B
2010 Subaru Impreza WRX STI
2010 Subaru Impreza WRX STI Special Edition
2011 Subaru Impreza WRX STI
2011 Subaru Impreza WRX STI Limited
2012 Subaru Impreza WRX STI
2012 Subaru Impreza WRX STI Limited
2013 Subaru Impreza WRX STI
2013 Subaru Impreza WRX STI Limited
2014 Subaru Impreza WRX STI
2014 Subaru Impreza WRX STI Limited
2015 Subaru WRX STI Base
2015 Subaru WRX STI Launch Edition
2015 Subaru WRX STI Limited
2016 Subaru WRX STI Base
2016 Subaru WRX STI Limited
2016 Subaru WRX STI Series.HyperBlue
2017 Subaru WRX STI Base
2017 Subaru WRX STI Limited
2018 Subaru WRX STI Base
2018 Subaru WRX STI Limited
2018 Subaru WRX STI Type RA
2019 Subaru WRX STI Base
2019 Subaru WRX STI Limited
2019 Subaru WRX STI S209
2020 Subaru WRX STI Base
2020 Subaru WRX STI Limited
2021 Subaru WRX STI Base
2021 Subaru WRX STI Limited

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