ACT Heavy Duty Performance Street Disc Clutch Kit | 2004-2021 Subaru WRX STI (SB10-HDSS)

ACT Heavy Duty Performance Street Disc Clutch Kit | 2004-2021 Subaru WRX STI (SB10-HDSS)

This ACT SB10-HDSS kit for the WRX STI pairs the Heavy Duty pressure plate, with its four-stage heat-treated diaphragm and rigid cover stamping, with an organic Performance Street sprung disc. The kit also includes ACT's Monoloc, a hardened chrome-moly one-piece replacement for the two-piece wedge collar and wire ring in pull-type clutches that keeps loading on the bearing and pressure plate even. ACT rates torque capacity at 515 ft/lbs.

Key features

• Torque capacity: 515 ft/lbs
• Heavy Duty diaphragm pressure plate
• Organic Performance Street sprung disc
• Pedal feel: light to moderate effort; gear rattle from stock-like to mild
• Every unit is clamp-load tested and computer balanced

What's included

• 3000503 Performance Street sprung disc
• SB019 Heavy Duty pressure plate
• RB601 release bearing
• PB1004 pilot bearing
• AT90 alignment tool
• ACT Monoloc
• Installation instructions

Before you order

Fits 2004-2021 Subaru WRX STI and 2007-2009 Legacy GT spec.B, 6-speed applications only. The 2004 and newer WRX STI must use an ACT or factory flywheel. Send us your year, model and current setup and we will confirm fitment before you order.

Find more drivetrain car parts.

See also: ACT Heavy Duty vs Xtreme · clutch break-in · organic vs ceramic clutch discs · clutch master cylinder symptoms · clutch slipping: symptoms and causes · stage 1 vs stage 2 clutch · signs of a bad clutch · Subaru WRX and STI parts.

Shipping and returns

Shipping is a flat $80.00 per order to US addresses, and returns are free within 15 days of delivery. Questions before you order? Ask a parts specialist.