ACT T1SS-F15 Mod-Twin 225 HDD Sprung Street Twin-Disc Clutch Kit

The ACT T1SS-F15 is a Mod-Twin 225 Heavy Duty Dual-Disc (HDD) Sprung Street Clutch Kit engineered for high-performance and high-horsepower applications. Advanced Clutch Technology (ACT) applies precision engineering to solve the common tradeoffs found in traditional twin-disc clutch setups, delivering an ultra-durable, fully rebuildable system with very high torque capacity and excellent street manners.

The Mod-Twin 225 design features sprung hub discs with torsional dampeners that reduce driveline shock, extend input shaft spline life, and minimize vibration for quieter operation. The forged aluminum cover combined with a Mono-Drive hub, exclusive diaphragm spring, premium organic friction materials, and hardened wear points ensure this clutch performs reliably even under the most demanding conditions.

Key Features:

• Soft progressive engagement with light pedal effort and smooth shifting
• 225mm dual-disc design doubles friction surface area for improved wear resistance, heat capacity, and longer service life
• Exclusive four-stage heat-treating process on all diaphragm springs for consistent pedal feel and durability
• Sprung Mono-Drive hub design reduces driveline shock and torsional vibration
• Forged aluminum cover with hardened wear points for long-term reliability
• 100% clamp load tested, dynamically computer balanced, and SFI certified
• Fully rebuildable — most components available separately for cost-effective maintenance
• ACT proprietary Adjustable Positive Lift Floater system for quiet operation with no floater rattle

Kit Includes:

• CNC-machined and dynamically balanced flywheel
• Pressure plate cover and diaphragm spring
• Two organic friction discs with sprung Mono-Drive hub assembly
• Floater plate
• Patented Monoloc Collar
• Release bearing
• Clutch alignment tool
• Pilot bearing (if required)

The ACT T1SS-F15 Mod-Twin 225 is the ideal choice for street-driven or dual-purpose Mustang builds demanding reliable high-torque clutch performance without sacrificing everyday drivability.