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ACT Mod-Twin 225 XT Sprung Street Clutch Kit 2004-2021 STI

by ACT
Save 22% Save 22%
Original price $2,241.00
Original price $2,241.00 - Original price $2,241.00
Original price $2,241.00
Current price $1,748.00
$1,748.00 - $1,748.00
Current price $1,748.00
  Lease to own   Pay as low as   $/week

This is ACT's new Mod Twin 225 XT Sprung Street Clutch Kit is ideal for high-horsepower AWD vehicles and unites uncompromised pedal feel, durability, and engagement quality with high-torque capacity. This clutch combines twice the organic friction surfaces with an ultra-durable spring-center mono-drive hub assembly in a completely modular design. Each diaphragm spring endures an exclusive four-stage heat-treating process that provides a consistent light-pedal feel. Other features include puck-style friction plates with high-quality organic friction materials that deliver a high friction coefficient, superior heat capacity, and longer clutch life. The friction plates uniformly transfer torque to a Mono-Drive sprung hub assembly which extends input shaft life and reduces driveline shock from torsional vibration. 


  • Torque capacity: 875 ft/lbs
  • Torque capacity over OE: 146%
  • Sprung street-disc type
  • Organic disc material
  • Recommended use: Street or Street/Strip


  • Soft progressive engagement
  • Light pedal effort
  • Smooth-shifting
  • Possible start-off judder with OE to mild transmission gear noise


  • Forged aluminum cover
  • Mono-drive hub
  • Exclusive diaphragm
  • Premium friction materials with hardened wear points


  • Delivers maximum performance
  • Delivers high-heat tolerances by combining robust design, strategic features, choice materials, and close tolerances


  • 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 
  • Pilot bearing (if needed)

NOTE: The MOD Twin clutches are fully rebuildable and most components can be ordered separately