ACT Heavy Duty Sprung 4-Puck Disc Clutch Kit - 2004-2021 Subaru STI / 2007-2009 Legacy GT spec.B
ACT Heavy Duty Sprung 4-Puck Disc Clutch Kit - 2004-2021 Subaru STI / 2007-2009 Legacy GT spec.B
ACT
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PRODUCT DETAILS ▾
RallySport Direct proudly carries a great selection of quality drivetrain upgrades brought to you by Advanced Clutch Technology.
This is the ACT Heavy Duty Sprung 4-Puck Disc Clutch Kit. This particular clutch kit has been designed to sustain substantial increases in power and torque from built engines and moderate bolt-ons which would otherwise surpass the capacity limits of your factory-equipped clutch. This is a complete kit for your specific application that features ACT's Heavy-Duty Pressure Plate which will have an increased clamp load, and it is combined with a proper 4-puck disc to provide the driver with more confidence under hard shifts.
DETAILS:
- Torque capacity over OEM: 88%
- Torque Capacity ft/lbs: 668
- Spline Count: 24
- 4-puck sprung race disc type
- Ceramic disc material
- Heavy-duty pressure plate type
- Light to moderate pedal effort, aggressive engagement, OE to mild gear rattle
- Confidence during hard shifts
- Moderate friction life
- Recommended for high horsepower street or race use
INCLUDES:
- ACT Heavy-Duty Pressure Plate
- ACT 4-Puck Sprung Race Disc
- ACT Release Bearing
- ACT Pilot Bearing
- Alignment tool
WHY WE CARRY THIS ▾
We only list parts we’d run ourselves or recommend to a friend building a real car. If it feels vague, unverified, or inconsistent, it doesn’t make the cut.
- Fitment-first mindset — no “universal” roulette
- Brand reputation matters — we favor proven manufacturing
- Support that actually responds with real answers
WHAT TO EXPECT ▾
This is the clean path: correct fitment, clean install, and results that match the intent.
- Install-ready experience with correct mounting where provided
- Finish that holds up to real driving, not just photos
- Selections on this page drive the exact fitment shipped
TRUST, BUILT INTO THE PROCESS.
Anyone can list parts. We curate what belongs on a serious build. Our goal is simple: fewer surprises, cleaner installs, and confidence when you hit “Buy.”
Fitment checked
We prioritize vehicle-specific listings and clear selection logic so you’re not gambling on compatibility.
Brand discipline
Proven manufacturing and consistent quality matter more than hype. We bias toward what actually holds up.
Real support
If you have a question, you’ll get a human answer that helps you finish the build — not a copy-paste shrug.
RallySport Direct proudly carries a great selection of quality drivetrain upgrades brought to you by Advanced Clutch Technology.
This is the ACT Heavy Duty Sprung 4-Puck Disc Clutch Kit. This particular clutch kit has been designed to sustain substantial increases in power and torque from built engines and moderate bolt-ons which would otherwise surpass the capacity limits of your factory-equipped clutch. This is a complete kit for your specific application that features ACT's Heavy-Duty Pressure Plate which will have an increased clamp load, and it is combined with a proper 4-puck disc to provide the driver with more confidence under hard shifts.
DETAILS:
- Torque capacity over OEM: 88%
- Torque Capacity ft/lbs: 668
- Spline Count: 24
- 4-puck sprung race disc type
- Ceramic disc material
- Heavy-duty pressure plate type
- Light to moderate pedal effort, aggressive engagement, OE to mild gear rattle
- Confidence during hard shifts
- Moderate friction life
- Recommended for high horsepower street or race use
INCLUDES:
- ACT Heavy-Duty Pressure Plate
- ACT 4-Puck Sprung Race Disc
- ACT Release Bearing
- ACT Pilot Bearing
- Alignment tool
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