ACT Heavy Duty Performance Street Disc Clutch Kit | 2004-2021 Subaru STI
SKU: 75177583312

ACT Heavy Duty Performance Street Disc Clutch Kit | 2004-2021 Subaru STI

Sale price$391.50 Regular price$435.00
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Ships within 48 hours · Estimated delivery Jul 7 - Jul 12

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Description

ACT Heavy Duty Performance Street Disc Clutch Kit | 2004-2021 Subaru STI2004 2021 Subaru WRX STI ACT Heavy Duty Performance Street Disc Clutch Kit SB10 HDSS kit features ACT's most popular Heavy Duty pressure plate and most popular street disc. ACT Heavy Duty pressure plates use 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

2004-2021 Subaru WRX STI ACT Heavy Duty Performance Street Disc Clutch Kit

SB10-HDSS kit features ACT's most popular Heavy Duty pressure plate and most popular street disc. ACT Heavy Duty pressure plates use 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 feature a reduced marcel for faster shift action to complement ACT pressure plates. Quiet operation with increased strength and reliability.

Monoloc is a one-piece, direct replacement or upgrade to the standard, two-piece wedge collar and wire ring featured in pull-type clutches. The spring tension of the segmented retaining ring is carefully calculated and tested for optimal performance. It provides uniform loading on the bearing and pressure plate to assure proper alignment, regardless of driver influence or vehicle modifications. Monoloc's hardened chrome-moly steel construction will provide years of service.

Features

  • Torque Capacity (ft/lbs.): 515
  • Light to moderate pedal effort, smooth positive engagement, OE to mild gear rattle, confidence during hard shifts
  • Longer friction life, extended by ACT's exclusive diaphragm design, dramatic improvement in release mechanism life
  • Carefully engineered, precisely assembled, accurately balanced, with premium organic friction materials for heat tolerance and reduced fade, major improvement in release mechanism
  • 100% clamp load tested and dynamically computer balanced for smooth high RPM reliability, includes ACT's patented Monoloc
  • Recommended for street and race use

Benefits

  • Increase clamp load, reduce deflection and maximize clutch life
  • Greater burst strength and durability
  • ACT pressure plates have precision cover stampings to provide rigidity and consistency

Applications

  • 2004-2021 Subaru WRX STI
  • 2007-2009 Subaru Legacy GT spec.B
    *6 speed applications only - Must use ACT or factory flywheel for the 2004 and newer WRX STi

What's in the box?

  • 3000503 - Perf Street Sprung Disc
  • AT90 - Alignment Tool
  • PB1004 - Pilot Bearing
  • RB601 - Release Bearing
  • SB019 - P/PL-M Heavy Duty Pressure Plate
  • ACT's patented Monoloc
  • Installation Instructions!
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 75177583312

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Christie Caviness
Dallas, US
★★★★★ 5
Great pillows
Color: Black(4pack), Size: Standard
These are absolutely great and them being cooling pillows is a big plus for someone who has hot flashes at night. They are very comfortable and they are great support for any position sleeper. These pillows are durable and the material comfortable and soft.
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Reviewed in the United States on March 29, 2026
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Grace Phelps
Los Angeles, US
★★★★★ 5
Soft pillows
Color: Grey, Size: Standard
Good size pillows. Very comfortable. Soft pillow and not so hard to lay on. It’s not too bulky or too big.
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Reviewed in the United States on May 15, 2026
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Andrew
Omaha, US
★★★★★ 3
They are using different/cheaper shredded foam then they were 1 year ago
Color: Memory Pillow, Size: Standard, Color: Memory Pillow, Size: Standard
The shredded foam used last year was really nice and soft and even firm to a point where your head is supported perfectly while you sleep. now the 2 extra pillows I received this weekend have completely different shredded foam which seems to be cheaper. Also when you unzip the pillow cover and get to the part where you can unzip the other cover where the foam is no longer is there. so they are using cheaper shredded foam and a cheaper cover to where the foam is and you can no longer unzip the second cover to see the foam. but I can easily tell that they are using different and cheaper foam which isn't true memory foam. their new blend is too fluffy and the pillows are floppy and too soft. the old ones i bought 1 year ago are heavy pillows that are true memory foam which your head molds into perfectly and are amazing. these new ones they are making aren't worth it. In one picture you can see the cover with different colored cheap foam and the other picture with the green and white thick premium quality shredded memory foam. The other pictures show how the old ones are thick and firm and moldable for you head and the other 2 are floppy because they use cheaper shredded foam. They need to use the shredded foam they used last year! it was really good! Now they are not true memory foam pillows anymore due to changing from premium shredded foam to cheap shredded foam.
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Reviewed in the United States on July 18, 2024
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Tonyamazin
Whiting, US
★★★★★ 5
Great comfortable, pillows.
Color: Black(4pack), Size: Standard
These are some great, comfortable pillows. They are soft and feel great. They are good for sleeping on or just using them to be comfortable in bed.
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Reviewed in the United States on April 23, 2026
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George Mann
New York, US
★★★★★ 5
Enjoyable
Color: Grey, Size: Queen
Holds their shape and stay cool.
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Reviewed in the United States on May 24, 2026

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