ACT T1DS-F15 Mod-Twin 225 Heavy Duty Sprung Race Clutch Kit

The ACT T1DS-F15 Mod-Twin 225 Heavy Duty Sprung Race Clutch Kit is a high-performance twin disc clutch system engineered for serious street/strip and track-focused rear-wheel-drive applications. This kit delivers strong torque capacity with a softer launch and smoother, more progressive engagement compared to traditional six-puck disc setups—making it equally at home on a road course, drag strip, or rally stage.

The 225mm puck-style ceramic friction plates utilize a modified ceramic formulation that provides a lower initial bite for improved control during corner exits, downshifts, and traction-limited conditions, while still delivering excellent heat capacity and long clutch life. Torque is uniformly transferred through a sprung Mono-Drive hub assembly, which reduces driveline shock from torsional vibration and extends input shaft life compared to traditional dual-hub designs.

Key Features:

• 225mm twin ceramic puck-style friction plates for high heat capacity and consistent torque transfer
• Sprung Mono-Drive hub assembly reduces torsional vibration and driveline shock
• ACT exclusive four-stage heat-treated diaphragm spring for light, consistent pedal feel and long-term reliability
• CNC-machined and dynamically balanced flywheel included for trouble-free installation
• Fully modular and rebuildable design—most components available individually for cost-effective servicing
• 100% clamp load tested, dynamically balanced, and SFI certified
• Forged aluminum cover, hardened wear points, and premium friction materials for maximum durability under demanding conditions

Kit Includes: CNC-machined dynamically balanced flywheel, pressure plate cover, diaphragm spring, face, puck-style ceramic friction plates, sprung Mono-Drive hub assembly, floater plate, release bearing, alignment tool, and pilot bearing (if required).

ACT applies tactical engineering to the Mod-Twin platform to solve the common tradeoffs found in conventional twin disc clutches, resulting in an ultra-durable, customer-serviceable clutch with very high torque capacity and a predictable, progressive feel.