ACT Heavy Duty Performance Street Sprung Clutch Kit with Monoloc (SB10-HDSS)
Note: Includes ACT Monoloc.
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.
Kit contents
- SB019 - ACT Heavy Duty Clutch Pressure Plate
- 3000503 - ACT Performance Street Sprung Clutch Disc
- PB1004 - ACT Clutch Pilot Bearing
- AT90 - ACT Clutch Alignment Tool
- RB601 - ACT Clutch Release Bearing
Specifications
- Product weight (lbs.): 18.2
- Torque capacity (ft/lbs.): 522
- Torque capacity over OE: 45%
- Disc material: Organic
- Clutch disc diameter (in.): 9.4
- Clutch disc diameter (mm): 240
- Input shaft diameter (in.): 1
- Pressure plate type: Heavy Duty
- Warranty: 12 months
Characteristics
- Feel: Light to moderate pedal effort, smooth positive engagement, OE to mild gear rattle, confidence during hard shifts
- Life: Longer friction life, extended by ACT's exclusive diaphragm design, dramatic improvement in release mechanism life
- Quality: Carefully engineered, precisely assembled, accurately balanced, with premium organic friction materials for heat tolerance and reduced fade, major improvement in release mechanism
- Recommended Use: Recommended for street and race use
- ACT Difference: 100% clamp load tested and dynamically computer balanced for smooth high RPM reliability, includes ACT's patented Monoloc
Fitment
- 2004-2014 Subaru Impreza WRX STI (Limited 2007, 2011-2014; Special Edition 2010)
- 2013-2021 Subaru WRX STI (Base 2013-2021; Limited 2015-2021; Sport-tech 2013-2014, 2017-2021; Sport 2017-2021; special editions)
- 2007-2009 Subaru Legacy GT spec.B
- Subaru Impreza WRX STI [JDM] 2002-2005
Q: Best street clutch kit for a 2004-2021 Subaru WRX STI or 2007-2009 Legacy GT spec.B?
A: The ACT SB10-HDSS Heavy Duty Performance Street Sprung Clutch Kit with Monoloc is recommended for street and race use and fits the 2004-2014 Subaru Impreza WRX STI (Limited 2007, 2011-2014; Special Edition 2010), the 2013-2021 Subaru WRX STI (Base 2013-2021; Limited 2015-2021; Sport-tech 2013-2014, 2017-2021; Sport 2017-2021; special editions incl. Type RA 2018) and the 2007-2009 Subaru Legacy GT spec.B. It also fits the JDM Impreza WRX STI 2002-2005 as a separate JDM extra.
Q: What comes in the ACT SB10-HDSS clutch kit for a 2004-2021 Subaru WRX STI or 2007-2009 Legacy GT spec.B?
A: It includes SB019 - ACT Heavy Duty Clutch Pressure Plate; 3000503 - ACT Performance Street Sprung Clutch Disc; PB1004 - ACT Clutch Pilot Bearing; AT90 - ACT Clutch Alignment Tool; RB601 - ACT Clutch Release Bearing.
Q: Does the ACT SB10-HDSS clutch kit for a 2004-2021 Subaru WRX STI or 2007-2009 Legacy GT spec.B include Monoloc?
A: Yes. Note: Includes ACT Monoloc. Monoloc is a one-piece, direct replacement or upgrade to the standard, two-piece wedge collar and wire ring featured in pull-type clutches.
Q: Is the ACT SB10-HDSS clutch kit good for a street-driven 2004-2021 Subaru WRX STI or 2007-2009 Legacy GT spec.B?
A: Yes. Recommended for street and race use. Feel: light to moderate pedal effort, smooth positive engagement, OE to mild gear rattle, confidence during hard shifts.
Q: How much torque does the ACT SB10-HDSS hold vs a stock 2004-2021 Subaru WRX STI or 2007-2009 Legacy GT spec.B clutch?
A: 522 ft/lbs. torque capacity, 45% over OE.
