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ACT Xtreme Duty Performance Street Disc Clutch Kit w/ Flywheel 2006-2024 WRX / 2005-2012 Legacy GT / 2006-2008 Forester XT

Current price $1,120.00
Original price $1,436.00
Original price $1,436.00 - Original price $1,436.00
Original price $1,436.00
$1,120.00 - $1,120.00
Current price $1,120.00
-22% -22%
23 In Stock, Usually Ships within 1-2 Business Days
SKU SB11-XTSS
by ACT
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DETAILS

Here, you are looking at the ACT Xtreme Duty Performance Street Disc Clutch Kit for your 2006-2021 WRX.

ACT bundles up the clutch, flywheel, TOB, and pilot into this kit for a complete offering in one package. 

This kit features an Xtreme pressure plate for the most demanding driver. ACT Xtreme pressure plates use an exclusive diaphragm design to increase clamp load, reduce deflection and maximize clutch life. All diaphragms endure a four-stage, heat-treating process for unparalleled performance. ACT pressure plates have precision cover stampings to provide rigidity and consistency. ACT's Performance street discs are the most popular disc purchased. They feature premium organic materials with high copper content for better heat transfer and steel-backed lining for greater burst strength and durability. These discs have reduced marcel for faster shift action to complement ACT pressure plates. Quiet operation with increased strength and reliability.

Additionally, since this kit includes the flywheel it will fit ALL MT 2015-2021 WRX without an issue, regardless of which flywheel design the vehicle came with from the factory. 

Details: 

  • Moderate to heavy pedal effort, smooth engagement, OE to mild gear rattle
  • Longer friction life, extended by ACT's exclusive diaphragm design
  • Carefully engineered, precisely assembled, accurately balanced, with premium organic friction materials for heat tolerance and reduced fade
  • Recommended for street and race use
  • 100% clamp load tested and dynamically computer balanced for smooth high RPM reliability
  • Torque Capacity: 532 FT / LBS
Which Clutch Kit is Right for Me: HD or XT? 

The choice between an HD (Heavy Duty) and XT (Xtreme Duty) clutch depends on your power level and driving style. The HD clutch is ideal for daily drivers and street-focused builds, offering a 20-50% increase in clamping force while maintaining smooth engagement and drivability. It is best suited for vehicles with mild to moderate performance upgrades that see a mix of city driving and occasional track use. On the other hand, the XT clutch is designed for high-performance applications, providing up to a 150% increase in clamping force with a more aggressive engagement. This makes it the preferred choice for heavily modified vehicles, track-focused builds, and those requiring maximum durability and grip. If you prioritize comfort and versatility, the HD clutch is the better option, while the XT clutch is the right choice for extreme performance and aggressive driving.

What’s the Difference Between a Full-Face Disc and a Pucked Clutch? 

Choosing between a full-face organic disc and a pucked cerametallic disc depends on your driving habits and performance needs. A full-face organic disc is best suited for daily driving and mild performance upgrades, offering smooth engagement, longevity, and quiet operation, making it ideal for street-focused vehicles with basic modifications. In contrast, a pucked cerametallic disc is designed for high-performance applications, featuring quick engagement, superior heat resistance, and higher torque capacity. This makes it the go-to option for racing, drifting, and vehicles with significant power upgrades. If you prioritize comfort and seamless engagement for daily use, the full-face organic disc is the right choice. However, if you need rapid engagement and superior performance under extreme conditions, a pucked clutch is the better option.

When Should I Choose a Single Disc Over a Twin Disc Clutch? 

The decision between a single disc and twin disc clutch depends on your vehicle’s power level and intended use. A single disc clutch is best for daily drivers and vehicles with moderate performance upgrades, handling up to 400-600 FT-LB of torque. It provides smooth engagement, an OEM-like pedal feel, and cost-effective performance, making it a great choice for street use with bolt-on modifications like intakes, exhausts, and tuning. Conversely, a twin disc clutch is ideal for high-performance builds exceeding 600 FT-LB of torque, offering superior heat dissipation, higher torque capacity, and faster shifts. This makes it the preferred option for competitive motorsports, aggressive driving, and vehicles requiring extreme torque handling. If you want a balance of affordability and daily drivability, a single disc clutch is the way to go, whereas a twin disc clutch is essential for high-power builds and track-ready performance.

How Do I Decide Between a Prolite and Streetlite Flywheel? 

The choice between a Prolite and Streetlite flywheel depends on your driving style and vehicle modifications. The Streetlite flywheel is designed for daily drivers and street builds, featuring slightly more mass to improve drivability, smooth engagement, and better heat dissipation. This makes it a great option for vehicles that see a mix of city driving and occasional track days. In contrast, the Prolite flywheel is engineered for racing and aggressive performance, offering a lightweight design that reduces mass for quicker revs, sharper throttle response, and faster shifts. This makes it ideal for high-horsepower or lightweight builds focused on track performance. If you need a flywheel that balances comfort and performance for versatile driving, the Streetlite flywheel is the better choice. However, if you prioritize ultimate responsiveness and fast acceleration, the Prolite flywheel is the superior option.


Brand Logo
ACT Single Disc Clutch Kits

ACT Single Disc Clutch Kits

ACT Single Disc Clutch Kits are designed to deliver exceptional performance and reliability, with every kit being a newly manufactured unit rather than a rebuilt product. ACT engineers each application from the ground up, developing innovative diaphragms and pressure plate faces to ensure superior quality. With up to 28 different pressure plate and disc combinations available, these kits cater to a wide range of needs, from mild street driving to full track use. Offering torque holding capacity increases ranging from 20% to an impressive 400%, most kits also meet the rigorous SFI Spec 1.1 standards, making them a top choice for performance enthusiasts.

DESIGN AND ENGINEERING

DESIGN AND ENGINEERING

Advanced Clutch Technology designs, engineers and develops products by leveraging decades of track and performance street experience. Advanced CAD, FEA simulation and CAM tools help ensure highly optimized performance, reliability and repeatability. These key advantages are produced by combining the best engineering and design methodologies with the latest in materials and manufacturing techniques.

Customer Reviews

Based on 3 reviews
67%
(2)
0%
(0)
0%
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33%
(1)
T
Tony Haywood
All around great

I threw out my throw out bearing because when a Lamborghini pulls up.... you know but It was an emergency and they had it to me within 48 hours... I paid for though. Superb service, clutch takes about 1k miles to break in.

Tony,

Thank you for your feedback on the ACT Xtreme Duty Performance Street Disc Clutch Kit with Flywheel for the 2006-2021 WRX. We are sorry to hear about the issue you had with the throw out bearing, but glad our service team was able to provide you with a replacement promptly. It is good to know that the clutch kit performs well and that the break-in period took around 1,000 miles.

Regards,

F
Frankie Provenzano
Quality

Great product holding effortlessly no slipping can’t go wrong as long as you properly break it in

Frankie,

The ACT Xtreme Duty Performance Street Disc Clutch Kit is a perfect setup for aggressive street driving! Break in is extremely important for a new clutch for the best longevity and performance! Thank you for the 5 Star Review!

Regards,

J
Jamie Scott
Throw out bearing

My new clutch has 742 miles on it and the throw out bearing is shot. Thought the little noise in the beginning was just it breaking in during the break in period but has just gotten louder since.

Jamie,

Thank you for your review! I am sorry to hear you are having issues with your ACT Xtreme Duty Performance Street Disc Clutch Kit! As we know the throwout bearing is an integral part of the system. Please contact Subimods Customer Support via email to support@subimods.com or call us at 860-291-0015 so we can best resolve this issue for you!

Regards,

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