The ACT T1SS-F17 Mod-Twin 10.5 Heavy Duty Sprung Street Clutch Kit is designed for high-powered street machines, uniting uncompromised pedal feel, durability, and engagement quality with high torque capacity by combining twice the organic friction surfaces with an ultra-durable sprung Mono-Drive hub assembly in a fully modular design. Each diaphragm spring undergoes ACT's exclusive four-stage heat-treating process for a consistent, light pedal feel. Steel-backed friction plates with high-quality organic friction material deliver a stable friction coefficient, good heat capacity, and long clutch life, uniformly transferring torque to the Mono-Drive sprung hub assembly to extend input shaft life and reduce driveline shock from torsional vibration. The kit includes a CNC-machined, 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, and pilot bearing where applicable. Mod-Twin clutches are fully rebuildable, and replacement discs may be ordered separately.
WarrantyInstallation Instructions
Specifications:
- Product Weight: 46.8 lbs
- Torque Capacity: 891 ft-lb (47% over OE)
- Disc Material: Organic, puck-style ceramic friction plates
- Clutch Disc Diameter: 10.5 in / 267mm
- Input Shaft Diameter: 1 in
- Pressure Plate Type: Heavy Duty
- Recommended Use: Street or street/strip
- Warranty: 12 months
- Part Number: T1SS-F17
Vehicle Applications:
- 2024 Ford Mustang GT
- 2024 Ford Mustang GT Premium
- 2025 Ford Mustang GT
- 2025 Ford Mustang GT Premium
- 2026 Ford Mustang GT
- 2026 Ford Mustang GT Premium
FAQ
What's included in the T1SS-F17 kit?
A CNC-machined, 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, and pilot bearing where applicable.
What is the torque capacity of the T1SS-F17?
891 ft-lb, a 47% increase over the factory clutch.
What vehicles fit the T1SS-F17?
2024-2026 Ford Mustang GT, including the GT Premium trim.
Is the Mod-Twin clutch disc replaceable if it wears out?
Yes. Mod-Twin clutches are fully rebuildable, and replacement discs may be ordered separately from ACT.

