ACT Mod-Twin 225 HD Sprung Race Clutch Kit - STI 2004-2021

This is ACT's new Mod Twin 225 HD Sprung Race Clutch Kit. This particular clutch kit is ideal for high-horsepower AWD vehicles that experience aggressive launches and high-performance driving conditions.

This clutch combines twice the ceramic friction surfaces with an ultra-durable mono-drive sprung hub assembly in a completely modular design. Each diaphragm spring endures an exclusive four-stage heat-treating process that provides a consistent light-pedal feel.

Other features include puck-style friction plates with high-quality ceramic friction materials that deliver a high friction coefficient, superior heat capacity, and longer clutch life. The friction plates uniformly transfer torque to a Mono-Drive sprung hub assembly which extends input shaft life and reduces driveline shock from torsional vibration. 

 

PERFORMANCE:

Torque capacity: 895 ft/lbs

Torque capacity over OE: 152%

Sprung race-disc type

Ceramic disc material

Recommended use: Drag racing or rally racing

 

FEEL:

Predictable aggressive engagement

Light pedal effort

Quick-shifting

Possible start-off judder with OE to mild transmission gear noise

 

CONSTRUCTION:

Forged aluminum cover

Mono-drive hub

Exclusive diaphragm

Premium friction materials with hardened wear points

 

QUALITY:

Delivers maximum performance

Delivers high-heat tolerances by combining robust design, strategic features, choice materials, and close tolerances

 

INCLUDES:

CNC-machined and dynamically balanced flywheel

Pressure plate cover

Diaphragm spring

Face

Puck-style ceramic friction plates

Sprung mono-drive hub assembly 

Floater

Patented Monoloc Collar

Release bearing

Alignment tool 

Pilot bearing (if needed)

 

OTE:

The MOD Twin clutches are fully rebuildable and most components can be ordered separately