ACT Xtreme Duty 6-Puck Clutch Kit 2004-2021 STI

ACT makes some of the best aftermarket clutches in the business, and we use them in our own Mach V project cars.

An ACT clutch package delivers significantly better power handling AND durability over the stock clutch, with minimal driveability trade-offs (at least in the full face models). All ACT clutches use new, not rebuilt, parts.

Each kit includes a throwout bearing, pilot bearing, and an alignment tool — everything you need for installation.

This clutch features a six-puck sprung hub disc with cerametallic friction pads. Rated to 766 lb/ft of torque — 115% increase over stock. With the 6-pad spring-centered race disc, engagement is harsher than stock, but shifting is faster. 

About this Xtreme Duty six-puck kit, ACT says: “Moderate to heavy pedal feel; smooth positive engagement with stock to mild gear rattle. Monoloc provides uniform loading on the bearing and pressure plate to assure proper alignment, regardless of driver influence or vehicle modifications.”

Tech Tip : Torque Clutch cover bolts to 26 ft lbs in a crisscross method.

Fits all 2004-2021 Subaru WRX STI.