ACT Heavy Duty Clutch Kit 4 Puck Sprung Disc Subaru STI 2004-2021 / Legacy GT Spec B 2007-2009 | SB10-HDG4

Fitment Information:

2004-2021 Subaru STI

2007-2009 Subaru Legacy GT Spec B

Note: Legacy GT spec.B models will need to use the STI flywheel in order to use this clutch

Features:

ACT's SB10-HDG4 kit features a sprung, 4 pad race clutch disc paired with their ever popular Xtreme pressure plate. What does this mean for you? Well, that means that you will have light to moderate pedal effort with aggressive engagement and the ability to handle up to 668ft/lbs of torque on your Subie. This clutch kit is best suited for high horsepower street or race use.

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 4-pad spring-centered race disc features a spring-center construction to properly damp torsional vibrations for quieter operation and resist failure even 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 4-pad spring-centered race disc, engagement is harsher, but shifting is faster. ACT's 4-pad spring-centered race disc is well-suited for smaller disc sizes in smaller engines. 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.

• Feel - Light to moderate pedal effort, aggressive engagement, OE to mild gear rattle, confidence during hard shifts
• Recommended Use - Recommended for high horsepower street or race use
• Torque Capacity (ft/lbs.): 668
• ACT Difference - 100% clamp load tested and dynamically computer balanced for smooth high RPM reliability, includes ACT's patented Monoloc

What's Included:

• 4 Pad Sprung Race Disc
  
• Xtreme Pressure Plate
• Alignment Tool
• Pilot Bearing
• Release Bearing