The Story
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:
-
Soft and progressive engagement with light pedal effort
-
Mild to moderate transmission gear noise
-
Dual organic friction surfaces for high torque capacity
-
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.) | 700Â |
| 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 |
Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Description
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:
-
Soft and progressive engagement with light pedal effort
-
Mild to moderate transmission gear noise
-
Dual organic friction surfaces for high torque capacity
-
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.) | 700Â |
| 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 |
