ACT T1S-S05 Mod Twin 225 HD Sprung Clutch Kit

SKU: T1S-S05 Categories: ,



  • Mod-Twin 225 HD Sprung Street
  • Product Weight (lbs.) 28.1
  • Torque Capacity (ft/lbs.) 700
  • Torque Capacity Over OE 97%
  • Disc Material Organic
  • Clutch Disc Diameter (Inches) 8.8
  • Clutch Disc Diameter (Millimeters) 225
  • Input Shaft Diameter (inches) 1
  • Pressure Plate Type Heavy Duty
  • Warranty 12 Months (view details)
  • SFI 1.2

T1S-S05 Mod-Twin 225 HD Sprung Street Kit is designed for high powered AWD street cars. It unites uncompromised pedal feel, durability, engagement quality with very high torque capacity by combining twice the organic friction surfaces with an ultra-durable spring center Mono-Drive hub in a completely modular design. Each diaphragm spring endures an exclusive four-stage heat treating process providing a consistent light pedal feel. Steel-backed Friction Plates with high quality organic friction materials deliver stable friction coefficient, good heat capacity and long clutch life. These Friction Plates uniformly transfer torque to the Mono-Drive sprung hub assembly which extends input shaft life and reduces driveline shock from torsional vibration. This kit includes a CNC-machined and 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 (if needed). Mod-Twin clutches are fully rebuildable and most components can be ordered separately.

Feel – Soft progressive engagement, light pedal effort, smooth shifting with OE to mild transmission gear noise

Life – Forged Aluminum Cover, Mono-drive hub, exclusive diaphragm, premium friction materials, and hardened wear points ensure this long-life twin performs and survives under the most demanding conditions

Quality – Delivers maximum performance and high heat tolerance by combining robust design, strategic features, choice materials, and close tolerances

Recommended Use – Street or Street/Strip

ACT Difference – Applying tactical engineering to the MOD-TWIN, ACT presents unique solutions to common tradeoffs found on twin disc clutches, resulting in an ultra-durable, customer serviceable, long-lasting clutch with very high torque capacity. All are 100% clamp load tested, balanced and SFI certified


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Confirmed Fitment

Year Make Model
Year Make Model
2001 - 2003 Subaru STI JDM
2004 - 2021 Subaru Impreza WRX STI