ACT Mod Twin 225 Heavy Duty Rigid Street Twin Disk Clutch Kit 2004-2021 STI
DESCRIPTION
The ACT Mod Twin 225 Heavy Duty Rigid Street Twin Disk Clutch Kit for the 2004-2021 STI is built for high-powered AWD street and street/strip cars that want smooth, responsive shifts with strong torque capacity. This modular twin disc system pairs dual organic friction surfaces with a rigid Mono-Drive chrome-moly hub for direct power transfer and consistent engagement.
A four-stage heat-treated diaphragm delivers a light, progressive pedal feel, while steel-backed organic friction plates provide stable friction, good heat capacity, and long service life. The lightweight, rigid design supports quicker shifts, and the kit includes a CNC-machined, dynamically balanced flywheel. Fully rebuildable, it is engineered for long-term reliability.
WHY?
This clutch is ideal for STI owners who want a street-friendly twin disc setup with a more direct, responsive feel. The rigid hub improves shift response, while the organic discs maintain smooth engagement and durability under high power conditions.
FEATURES:
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Soft and progressive engagement with light pedal effort
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Mild to moderate transmission gear noise
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Dual organic friction surfaces for high torque capacity
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Rigid Mono-Drive chrome-moly hub for direct power transfer
COMPATIBILITY
2004-2021 STI
SPECIFICATIONS
| Item Description | ACT Mod-Twin 225 Heavy Duty Rigid Street Clutch Kit |
|---|---|
| Product Weight (lbs.) | 28.1 |
| Torque Capacity (ft/lbs.) | 700Ā |
| Torque Capacity Over OE | 97% |
| Disc Material | Organic |
| Clutch Disc Diameter (Inches) | 8.8 |
| Clutch Disc Diameter (Millimeters) | 225 |
| Input Shaft Diameter (inches) | 1 |
| Pressure Plate Type | Heavy Duty |
| Warranty | 12 Months (view details) |
| SFI | 1.2 |
| UPC | 00842385025403 |