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ACT Subaru 2004-2020 WRX STI Mod Twin HD Street Kit Sprung Mono-Drive Hub Torque Capacity 700ft/lbs
SKU: ACT-T1S-S05
ACT 2004-2020 Subaru WRX STI Mod Twin HD Street Sprung Clutch Kit – 700 ft/lbs Torque Capacity
Dominate the street or strip with the ACT Mod Twin Disc HD Clutch Kit for Subaru WRX STI. With a 700 ft/lb torque rating, this race-inspired clutch uses a mono-drive hub design and sprung discs for exceptional shock absorption and street-friendly engagement.
- Free shipping
ACT Mod-Twin HD Street Clutch Kit – 2004-2020 Subaru WRX STI (Sprung Mono-Drive Hub)
Designed for high-powered AWD street machines, the ACT Mod-Twin 225 Heavy Duty Sprung Street Clutch Kit (T1S-S05) delivers massive torque capacity without sacrificing drivability. With its modular twin-disc design and advanced Mono-Drive sprung hub, this clutch provides smooth engagement, a light pedal feel, and the durability needed to handle serious power on the street or strip.
Key Features & Benefits
- Massive Torque Holding: Rated up to 700 ft-lbs of torque—an impressive 97% increase over stock capacity.
- Sprung Mono-Drive Hub Design: Minimizes driveline shock and torsional vibration while extending input shaft life.
- Dual Organic Friction Discs: Premium, high-copper organic material ensures stable friction, excellent heat tolerance, and long-lasting performance.
- Consistent Pedal Feel: Diaphragm springs undergo a 4-stage heat treatment process for reliable, light pedal effort under extreme conditions.
- Fully Modular & Rebuildable: Components can be replaced individually, offering long-term value and easy serviceability.
Technical Specifications
| Clutch Disc Diameter: | 8.8" / 225 mm |
| Input Shaft Diameter: | 1.0" |
| Torque Capacity: | 700 ft-lbs |
| Torque Gain Over OE: | +97% |
| Product Weight: | 28.1 lbs |
| Pressure Plate Type: | Heavy Duty |
| SFI Certification: | 1.2 |
| Warranty: | 12 Months |
What to Expect
- Feel: Light pedal effort with soft, progressive engagement and smooth shifting. Expect OE to mild gear noise under load.
- Longevity: Built for long-term durability with forged aluminum components, hardened wear points, and premium materials throughout.
- Build Quality: Each kit is precision-engineered, computer-balanced, and built to withstand high heat and demanding use.
The ACT Difference
The ACT Mod-Twin goes beyond conventional twin-disc designs. By strategically engineering around common compromises, ACT delivers a high-performance clutch that's not only incredibly strong but also streetable and serviceable. Every unit is 100% clamp load tested, dynamically balanced, and SFI certified for trusted performance.
- ManufacturerACT
- BrandACT
- MPNT1S-S05
- Part Number_333224T1S-S05
- UPC842385025281
- Part NumberT1S-S05
- Brand NameACT
- VendorACT
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Returns
Should you need to return a part for refund, exchange, or credit, please contact our returns department within 30 days of purchase at orders@southerncarparts.com for a Return Merchandise Authorization (RMA) number. Most problems, such as installation, can be solved with a telephone call (888-631-1433). Southern Car Parts will not accept returned goods without prior authorization and an RMA# written clearly on the exterior of the box. The customer is responsible for freight on all return orders. Parts authorized to be returned, on a non-exchange basis, are subject to a 20% restocking fee. Returns will only be accepted within 30 days of the original date of shipment. Custom painted parts - Once these parts are started, we can refund you less the paint(chemicals) that have been used. Exception is rear spoilers and front splitters, we can refund less 20%.
Custom-made-to-order items are NOT returnable. This includes embroidered floor mats, interior embroidered items, and car covers.
Damages in Shipping
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