ACT Mod Twin 225 Heavy Duty Rigid Race Twin Disk Clutch Kit 2004-2021 STI
DESCRIPTION
The ACT Mod Twin 225 Heavy Duty Rigid Race Twin Disk Clutch Kit for the 2004-2021 STI is built for high-powered AWD race applications that demand aggressive launches and fast, precise shifts. This modular twin disc system combines dual ceramic friction surfaces with a rigid Mono-Drive chrome-moly hub for direct power transfer and very high torque capacity.
A four-stage heat-treated diaphragm provides consistent light pedal effort, while puck-style ceramic friction plates deliver high friction and excellent heat resistance under extreme conditions. The lightweight, rigid design supports rapid shifts, and the kit includes a CNC-machined, dynamically balanced flywheel. Fully rebuildable, it is engineered for long-term race use.
WHY?
This clutch is ideal for STI builds focused on drag, road, or rally racing where maximum holding power and quick engagement are critical. The rigid hub and ceramic twin discs provide aggressive, predictable shifts while protecting drivetrain components under repeated high-load launches.
FEATURES:
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Predictable aggressive engagement with light pedal effort
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Dual ceramic friction surfaces for very high torque capacity
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Rigid Mono-Drive chrome-moly hub for direct power transfer
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CNC-machined, dynamically balanced flywheel
COMPATIBILITY
2004-2021 STI
SPECIFICATIONS
| Item Description | ACT Mod-Twin 225 Heavy Duty Rigid Race Clutch Kit |
|---|---|
| Product Weight (lbs.) | 28.1 |
| Torque Capacity (ft/lbs.) | 895Ā |
| Torque Capacity Over OE | 152% |
| Disc Material | Ceramic |
| 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 | 00842385025427 |