ACT SB12-HDG6 HD/Race Sprung 6-Pad Clutch Kit for Subaru Impreza WRX

SB12-HDG6 kit features ACT's most popular Heavy Duty pressure plate. 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 6-pad, spring-centered race disc features a spring-center to properly damp torsional vibrations and resist failure under harsh conditions. ACT spring retainers utilize wraparound spring windows and thicker retainer stampings to provide spring support, reduce stress concentrations, and increase strength and reliability. With the 6-pad, spring-centered race disc, engagement is harsher, but shifting is faster. The 6-pad, spring-centered disc is recommended for larger clutch sizes to absorb more heat. HD/Race Sprung 6 Pad Light to moderate pedal effort, aggressive engagement, OE to mild gear rattle; Moderate friction life, extended by ACT's exclusive diaphragm design; Carefully engineered, precisely assembled, accurately balanced, uses select ceramic friction materials for high heat tolerance and maximum performance; Recommended for high horsepower street or 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 SB12-HDG6 HD/Race Sprung 6-Pad Clutch Kit is engineered for high-performance street and race applications requiring increased clamp load, fast shifting, and reliable heat management. This kit combines ACT’s Heavy Duty pressure plate with a spring-centered, six-pad race disc designed to handle demanding driving conditions while maintaining torsional vibration control.

The Heavy Duty pressure plate uses ACT’s exclusive diaphragm design to increase clamp load, reduce deflection, and help maximize clutch life. Each diaphragm undergoes a four-stage heat-treating process, while precision cover stampings improve rigidity and consistency. The disc uses select ceramic friction materials for high heat tolerance and maximum performance. Reinforced spring retainers with wraparound spring windows provide improved spring support, reduce stress concentrations, and increase durability.

The SB12-HDG6 provides light to moderate pedal effort with aggressive engagement, faster shifting, and moderate friction life. Its spring-centered design helps damp torsional vibrations and resist failure under harsh conditions, although engagement is harsher than an organic street disc and mild gear rattle may occur. ACT dynamically computer balances and clamp-load tests each assembly to support smooth, reliable operation at high engine speeds. This kit is recommended for larger clutch applications, high-horsepower street vehicles, and race use. It is backed by ACT’s one-year warranty.

Product Specifications and Technical Data

• Brand: ACT
• Part Number: SB12-HDG6
• Clutch Type: Heavy Duty/Race sprung six-pad
• Disc Design: Spring-centered race disc
• Friction Material: Select ceramic
• Engagement Characteristics: Aggressive engagement with faster shifting
• Recommended Use: High-horsepower street and race applications
• Testing and Balancing: 100% clamp-load tested and dynamically computer balanced

What's Included

• Heavy Duty pressure plate
• Spring-centered six-pad race clutch disc
• ACT clutch kit components required for installation

Fitment includes select 2009–2013 Subaru Impreza applications, including listed 2010, 2011, 2012, and 2013 models. Verify vehicle trim, engine, transmission, and original clutch specifications before ordering.

Features:

• Heavy Duty Diaphragm Design: Increases clamp load, reduces deflection, and helps maximize clutch life.
• Spring-Centered Six-Pad Disc: Dampens torsional vibrations and resists failure under harsh driving conditions.
• Ceramic Friction Material: Provides high heat tolerance and performance for demanding street or race use.
• Precision Tested and Balanced: Each assembly is clamp-load tested and dynamically computer balanced for smooth high-RPM reliability.

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
Carb Acknowledgement Required: false
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: N/A
Units Per Sku: 1
Regular Stock: t