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


ACT Clutch Kits & Flywheels

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

PART# ACT SB10-HDSS
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$683.00   $875.00
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ACT Street-Lite Flywheel | 2004-2021 Subaru STI (600235)
ACT Street-Lite Flywheel | 2004-2021 Subaru STI (600235) 
  $391.00
ACT XACT Prolite Flywheel | 2004-2021 Subaru STI (600240)
ACT XACT Prolite Flywheel | 2004-2021 Subaru STI (600240) 
  $420.00
Default Title ACT Heavy Duty Performance Street Disc Clutch Kit | 2004-2021 Subaru STI (SB10-HDSS) - ACT SB10-HDSS $683.00
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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!

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!

Customer Reviews

Based on 26 reviews
100%
(26)
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I
Ike Percifield
Fast shipping and amazing product

My current Act Hd clutch kit is starting to go out at about 50k miles and it was nothing but great so I ordered a new Act Hd clutch and it arrived in 3 days!!!!! Highly recommend buying

A
Anonymous
Good for nitro

Hey guys just got this bad boy for my new wrx I got Tuesday ! Was working good untill I flipped the nitro button and blew it out. The dealership told me how much it was to get replaced and I left the car back at the dealership. There was a third party that had my civic si, and I ended up going back to get it. Great clutch tho! Right on right on!

J
Jason Westbrook
HD ACT Clutch

Truly heavy duty, feels like it can take anything you throw at at it! Highly responsive, grabs quickly and pulls you into the next gear. Getting starting may prove a little difficult as it’s a little shaky in first, which presents a little learning curve. That being said the positives highly outweigh any negative aspect of this clutch.

R
Robert M.
ACT!

Definitely missed the feel of an ACT! Far better than factory and more than capable of putting the power down. From price to delivery time, all n all, great purchase!

J
John Hoot
ACT Clutch

Fast order fulfillment and shipping. Only negative was that FedEx delivered to my neighbor. He brought it over an hour later. I will post more after I install clutch in a couple weeks. It will be better than stocker.

MAP Limited Lifetime Warranty

1.) All MAPerformance in-house fabricated parts include a Limited Lifetime Warranty for the Original Purchaser. This warranty only applies to the original purchaser and is non-transferrable. If the product fails it would need to be determined by MAPerformance that it is due to manufacturing defects in materials or workmanship.

2.) This does not cover normal wear and tear. Improper use, modification, or abuse voids this warranty. MAPerformance will not be held responsible for additional costs due to the failure of a product (cost of sale, towing, labor, etc.). Warranty claims must be submitted to MAPerformance for review.

3.) You must create a support ticket to acquire your return authorization number prior to returning the product.

4.) Warranty claims will not be honored if the product was not purchased through an approved dealer.

For warranty evaluation please create a support ticket via this form Click Here For Customer Service.