ACT Heavy Duty Race Rigid 4 Pad Clutch Kit 2004-2021 STI

DESCRIPTION

The ACT Heavy Duty Race Rigid 4 Pad Clutch Kit is designed for 2004–2021 Subaru WRX STI models that need race-ready durability in smaller engine applications. This kit pairs a rigid 4-pad ceramic race disc with ACT’s Heavy Duty diaphragm pressure plate, delivering light to moderate pedal effort, reliable clamp load, and consistent performance under extreme racing conditions. Rated to handle up to 668 ft-lbs of torque, the chrome-moly hub and heat-treated components provide durability while the lightweight, rigid disc allows for quick shifts. The included Monoloc one-piece retaining ring ensures proper alignment and long-term service life.

WHY?

This kit is ideal for STI owners building a race car with smaller engine displacement who need a durable clutch that can handle hard launches and repeated high-RPM shifts. The 4-pad rigid disc is optimized for smaller clutch sizes, providing reliable torque transfer and increased heat absorption. ACT’s Heavy Duty pressure plate and Monoloc bearing system deliver consistent clamp load and alignment, ensuring long-lasting performance and confidence on the track.

FEATURES:

• Rigid 4-pad ceramic race disc

• Chrome-moly heat-treated hub

• Heavy Duty diaphragm pressure plate with precision stampings

• Torque capacity up to 668 ft-lbs

• Complete kit: disc, pressure plate, alignment tool, pilot bearing, release bearing

• Monoloc one-piece retaining ring for proper alignment and durability

COMPATIBILITY

2004-2021 STI

SPECIFICATIONS