ACT T1S-G23 Mod-Twin Heavy Duty Street Twin Disc Clutch Kit

The ACT T1S-G23 Mod-Twin Heavy Duty Street Twin Disc Clutch Kit is a complete, high-performance twin disc clutch system engineered for street and street/strip use. Built by Advanced Clutch Technology (ACT) in Lancaster, California, this kit delivers significantly increased torque capacity over the factory clutch while maintaining the drivability and pedal feel required for daily driving.

What's Included:

• CNC-machined and dynamically balanced flywheel
• Pressure plate cover with exclusive diaphragm spring
• Puck-style organic friction discs with Mono-Drive rigid hub
• Patented Monoloc Collar for uniform bearing and pressure plate alignment
• Adjustable Positive Lift Floater for quiet, rattle-free operation
• Release bearing and alignment tool
• Pilot bearing (where applicable)

Key Features:

• SFI Certified: All ACT Mod-Twin kits are 100% clamp load tested, dynamically balanced, and SFI approved for competitive use
• Fully Rebuildable: Replacement discs and most components can be ordered separately, reducing long-term ownership costs
• Forged Aluminum Cover: Lightweight yet durable construction with hardened wear points for extended service life under demanding conditions
• Exclusive 4-Stage Heat Treatment: All diaphragm springs undergo ACT's proprietary four-stage heat-treating process for consistent clamp load and long-term reliability
• Adjustable Floater System: ACT's proprietary Adjustable Positive Lift Floater provides quiet operation with no floater rattle and eliminates posts that can wear out
• Street-Optimized Feel: Soft, progressive engagement with light pedal effort and smooth shifting characteristics suitable for everyday street use

The ACT Mod-Twin line applies tactical engineering to solve common twin disc tradeoffs, resulting in an ultra-durable, customer-serviceable clutch system with very high torque capacity. The T1S-G23 is recommended for street or street/strip use and is an ideal upgrade for high-output GM-platform builds that have exceeded the limits of a single disc clutch.