ACT Mod-Twin 225 Heavy Duty Sprung Race Twin Disk Clutch Kit 2006-2024 WRX / 2005-2012 Legacy GT / 2006-2008 Forester XT

The Mod-Twin 225 HD Sprung Race Kit is designed for high-powered AWD vehicles, delivering aggressive launches and smoother shifting. This modular twin-disc setup combines twice the ceramic friction surfaces with an ultra-durable Mono-Drive sprung hub assembly. Each diaphragm spring undergoes a four-stage heat treatment for consistent light pedal feel. Puck-style ceramic friction plates provide a high friction coefficient, superior heat capacity, and long clutch life. Torque is evenly transferred through the Mono-Drive sprung hub, which extends input shaft life and reduces driveline shock from torsional vibration. The kit includes a CNC-machined, dynamically balanced flywheel, pressure plate cover, diaphragm spring, puck-style ceramic friction plates, sprung Mono-Drive hub assembly, floater, patented Monoloc collar, release bearing, alignment tool, and pilot bearing (if needed). Mod-Twin clutches are fully rebuildable with most components available separately.

Specs

• Torque Capacity: 800 ft/lbs (154% over OE)
• Disc Material: Ceramic
• Disc Diameter: 8.8 in / 225 mm
• Input Shaft Diameter: 1 in
• Pressure Plate Type: Heavy Duty
• Product Weight: 28.0 lbs
• SFI: 1.2

Performance Characteristics

• Feel: Predictable aggressive engagement, light pedal effort, smooth shifting, possible start-off judder, OE to mild transmission gear noise
• Life: Forged aluminum cover, Mono-drive hub, exclusive diaphragm, premium friction materials, and hardened wear points ensure long-life performance under extreme conditions
• Quality: Combines robust design, strategic features, premium materials, and close tolerances for maximum performance and high heat tolerance
• Recommended Use: Drag, Road, or Rally Racing
• ACT Difference: Ultra-durable, customer-serviceable twin disc clutch, 100% clamp load tested, dynamically balanced, and SFI certified