ACT Heavy Duty Performance Street Disc Clutch Kit - 2004-2021 Subaru STI / 07-09 Legacy GT spec.B
ACT Heavy Duty Performance Street Disc Clutch Kit - 2004-2021 Subaru STI / 07-09 Legacy GT spec.B
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ACTSB10-HDSS
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ACTSB10-HDSS
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ACTSB10-HDSS
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ACTSB10-HDSS
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ACTSB10-HDSS
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ACTSB10-HDSS
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ACTSB10-HDSS
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ACTSB10-HDSS
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ACTSB10-HDSS
ACT
ACT Heavy Duty Performance Street Disc Clutch Kit - 2004-2021 Subaru STI / 07-09 Legacy GT spec.B
ACT Heavy Duty Performance Street Disc Clutch Kit - 2004-2021 Subaru STI / 07-09 Legacy GT spec.B
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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.
Rated for 515 ft/lbs torque.
Feel
A low to moderate pedal feel; smooth engagement with stock to low gear rattle. Monoloc provides uniform loading on the bearing and pressure plate to assure proper alignment, regardless of driver influence or vehicle modifications.
Life
Longer clutch life achieved through ACT's exclusive diaphragm design. Monoloc's hardened Chrome-moly steel construction will provide years of service.
Quality
Premium organic friction materials for heat tolerance, faster recovery from overheating and prevents warping of mating surfaces. The spring tension of the segmented retaining ring is carefully calculated and tested for optimal performance.
Recommended Use
Recommended for street and race use
ACT Difference
All ACT pressure plates are dynamically computer balanced for smooth operation at high RPM. Monoloc is a one-piece, direct replacement or upgrade to the standard, two-piece wedge collar and wire ring featured in pull-type clutches.
Warranty
1 Year from retail purchase
Includes
- Sprung Disc
- Heavy Duty Pressure Plate
- Alignment Tool
- Pilot Bearing
- Release Bearing .
Fits
2015 Subaru STI ACT Heavy Duty Monoloc Performance Street Sprung Clutch

| Specification | Value |
|---|---|
| Clamp Load Increase | Not Supplied |
| Crank Torque Capacity | 515 Ft/Lbs |
| Disc Material | Organic |
| Disc Style | Sprung Hub |
| Disc Type | Disc |
| Flywheel Included | No |
| Pressure Plate Style | Pull |
| Wheel Torque Capacity | Not Provided |
| Alignment Tool Included | Yes |
Terrible terrible service the clutch pressure plate was bent when I received it but nothing too off to notice straight out of the box until you place it against the flywheel of the vehicle so that was what I did using the alignment tool shown in the photos and placed the bolts to hold the plate in place but did not torque down on the bolts I used anti seize which is a metallic grey grease looking substance on the bolts now because there was some grease from the reside of gloves when ever you take down a transmission on the parts and there was metallic looking residue which they stated was use of this piece when it wasn’t and in the photos I uploaded to them you can see everything was still new they will not be able to send me a new one even though it is all new and that it wasn’t “installed” I was bounced back and forth to ACT and then back to subispeed 3 times all to then hear they won’t take this part back per a manager named Randy I super frustrating I will never buy from subispeed again this company isn’t even a private company but instead owned by rallysport plus customer service was terible and even though I was still in the 60 day return window they didn’t replace a part that was shipped with a defect to my doorstep don’t wish this on anyone. BEWARE OF THIS COMPANY!!
Terrible terrible service the clutch pressure plate was bent when I received it but nothing too off to notice straight out of the box until you place it against the flywheel of the vehicle so that was what I did using the alignment tool shown in the photos and placed the bolts to hold the plate in place but did not torque down on the bolts I used anti seize which is a metallic grey grease looking substance on the bolts now because there was some grease from the reside of gloves when ever you take down a transmission on the parts and there was metallic looking residue which they stated was use of this piece when it wasn’t and in the photos I uploaded to them you can see everything was still new they will not be able to send me a new one even though it is all new and that it wasn’t “installed” I was bounced back and forth to ACT and then back to subispeed 3 times all to then hear they won’t take this part back per a manager named Randy I. BEWARE OF THIS COMPANY!!! DONT WISH THIS ON ANYON