ACT Mod Twin 225 Xtreme Duty Rigid Street Twin Disk Clutch Kit 2004-2021 STI

DESCRIPTION

The ACT Mod Twin 225 Xtreme Duty Rigid Street Twin Disk Clutch Kit for the 2004-2021 STI is designed for high-powered AWD street builds that want fast shifting and strong torque capacity with a rigid hub setup. This modular twin disc system uses dual organic friction surfaces with a rigid Mono-Drive chrome-moly hub for direct power transfer and reduced driveline compliance.

A four-stage heat-treated diaphragm delivers a light, consistent 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 modular and rebuildable, it is built for long-term performance.

WHY?

This clutch is ideal for STI owners who want twin disc performance with a more direct, race-inspired feel on the street. The rigid hub improves shift response and power transfer, while the organic twin discs maintain smoother engagement compared to ceramic setups. It is a strong choice for high-horsepower street or street/strip builds that prioritize response and durability.

FEATURES:

• Soft, 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

• CNC-machined and dynamically balanced flywheel

COMPATIBILITY

2004-2021 STI

SPECIFICATIONS