The ACT SB9-HDG6 kit pairs a Heavy Duty pressure plate with a 6-pad spring-centered race disc for larger-clutch-size race and heavy street use on the early WRX platform. ACT's Heavy Duty pressure plate uses an exclusive diaphragm design to increase clamp load, reduce deflection, and extend clutch life. All diaphragms go through a four-stage heat-treating process, and precision cover stampings add rigidity and consistency. Heavy Duty pressure plates increase clamp load by 20 to 50 percent over stock. ACT's 6-pad spring-centered race disc uses a spring-center construction to properly damp torsional vibrations and resist failure under harsh conditions. ACT spring retainers use wraparound spring windows and thicker retainer stampings for spring support and increased strength. Engagement is harsher than a street disc, but shifting is faster, and the 6-pad spring-centered disc is recommended for larger clutch sizes to absorb more heat. The kit also includes ACT's Monoloc, a one-piece, direct replacement for the standard two-piece wedge collar and wire ring used in pull-type clutches. Monoloc's segmented retaining ring tension is carefully calculated and tested to provide uniform loading on the bearing and pressure plate for consistent alignment, regardless of driver input or vehicle modifications, and its hardened chrome-moly steel construction is built to last.
WarrantyInstallation Instructions
Specifications:
- Pressure Plate: Heavy Duty pressure plate, four-stage heat-treated diaphragm
- Disc: 6-pad spring-centered race disc
- Clamp Load: 20-50% increase over stock
- Retaining Ring: ACT Monoloc, one-piece hardened chrome-moly (included)
- Part Number: SB9-HDG6
Vehicle Applications:
- 2005 Saab 9-2X Aero
- 2004 Subaru Baja Turbo
- 2005 Subaru Baja Turbo
- 2004 Subaru Forester XT
- 2005 Subaru Forester XT
- 2005 Subaru Forester XT Premium
- 2002 Subaru Impreza WRX
- 2003 Subaru Impreza WRX
- 2004 Subaru Impreza WRX
- 2005 Subaru Impreza WRX
- 2007 Subaru Legacy GT spec.B
- 2008 Subaru Legacy GT spec.B
- 2009 Subaru Legacy GT spec.B
- 1991 Subaru Legacy Sport
- 1992 Subaru Legacy Sport
- 1993 Subaru Legacy Sport
- 1994 Subaru Legacy Sport
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
FAQ
What does the SB9-HDG6 kit include?
The SB9-HDG6 kit includes an ACT Heavy Duty pressure plate, a 6-pad spring-centered race disc, and ACT's Monoloc retaining ring.
What does ACT's Monoloc do?
Monoloc is a one-piece, direct replacement for the standard two-piece wedge collar and wire ring used in pull-type clutches. Its hardened chrome-moly construction provides uniform loading on the bearing and pressure plate for consistent alignment, regardless of driver input or vehicle modifications.
Is this kit suited for street or race use?
It is built around a 6-pad race-style disc paired with a Heavy Duty pressure plate, making it best suited to dedicated race or heavy track/street use.
What vehicles does this kit fit?
Yes, this kit covers the 2002-2005 Subaru Impreza WRX, Forester XT/XT Premium (2004-2005), Baja Turbo (2004-2005), Legacy GT spec.B (2007-2009), Legacy Sport (1991-1994), and Saab 9-2X Aero (2005). See the full Vehicle Applications list above to confirm the exact year and trim.