ACT Heavy Duty 6-Puck Disc Clutch Kit 2004-2021 STI

DESCRIPTION

The ACT Heavy Duty 6-Puck Disc Clutch Kit is engineered for the 2004–2021 Subaru STI and is designed to handle high horsepower street and race applications. This kit features ACT’s Heavy Duty pressure plate with an exclusive diaphragm design that increases clamp load while reducing deflection to maximize clutch life. The 6-pad spring-centered race disc is built to absorb more heat, making it ideal for larger clutch applications and aggressive driving conditions. Precision cover stampings and a four-stage heat-treated diaphragm ensure consistent performance, while the included ACT Monoloc release bearing system improves alignment and long-term reliability.

WHY?

This clutch kit is a strong choice for STI owners pushing higher power levels who demand fast shifts and dependable holding capacity. The 6-puck spring-centered disc delivers quicker engagement and improved heat resistance compared to lower puck count options, making it better suited for hard driving and track use. With light to moderate pedal effort, proven durability, and ACT’s patented Monoloc design, this kit offers confidence under aggressive shifts without sacrificing reliability.

FEATURES:

• Designed for the 2004–2021 Subaru STI

• Heavy Duty pressure plate with increased clamp load and reduced deflection

• 6-pad spring-centered disc for improved heat absorption and faster shifting

• Aggressive engagement with light to moderate pedal effort

• Includes ACT patented Monoloc release bearing system

COMPATIBILITY

2004-2021 STI

SPECIFICATIONS