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ACT Mod Twin 225 Heavy Duty Sprung Street Twin Disc Clutch Kit 2004-2021 STI

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ACT Mod Twin 225 Heavy Duty Sprung Street Twin Disc Clutch Kit 2004-2021 STI

The Mod-Twin 225 HD Sprung Street Kit is engineered for high-powered AWD street cars, delivering uncompromised pedal feel, durability, and engagement quality with very high torque capacity. This modular twin-disc setup combines twice the organic friction surfaces with an ultra-durable spring-center Mono-Drive hub. Each diaphragm spring undergoes an exclusive four-stage heat treatment for consistent light pedal feel. Steel-backed organic friction plates provide stable friction, good heat capacity, and long clutch life. Torque is evenly transferred through the Mono-Drive sprung hub assembly, which extends input shaft life and reduces driveline shock from torsional vibration. The kit includes a CNC-machined, dynamically balanced flywheel, pressure plate cover, diaphragm spring, 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, with most components available separately.

Specs

  • Torque Capacity: 700 ft/lbs (97% over OE)
  • Disc Material: Organic
  • Disc Diameter: 8.8 in / 225 mm
  • Input Shaft Diameter: 1 in
  • Pressure Plate Type: Heavy Duty
  • Product Weight: 28.1 lbs
  • SFI: 1.2

Performance Characteristics

  • 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 long-life performance under demanding conditions
  • Quality: Combines robust design, strategic features, premium materials, and close tolerances for maximum performance and high heat tolerance
  • Recommended Use: Street or Street/Strip
  • ACT Difference: Ultra-durable, customer-serviceable twin disc clutch, 100% clamp load tested, dynamically balanced, and SFI certified
$694.40

Original: $1,984.00

-65%
ACT Mod Twin 225 Heavy Duty Sprung Street Twin Disc Clutch Kit 2004-2021 STI

$1,984.00

$694.40

Product Information

Shipping & Returns

Description

The Mod-Twin 225 HD Sprung Street Kit is engineered for high-powered AWD street cars, delivering uncompromised pedal feel, durability, and engagement quality with very high torque capacity. This modular twin-disc setup combines twice the organic friction surfaces with an ultra-durable spring-center Mono-Drive hub. Each diaphragm spring undergoes an exclusive four-stage heat treatment for consistent light pedal feel. Steel-backed organic friction plates provide stable friction, good heat capacity, and long clutch life. Torque is evenly transferred through the Mono-Drive sprung hub assembly, which extends input shaft life and reduces driveline shock from torsional vibration. The kit includes a CNC-machined, dynamically balanced flywheel, pressure plate cover, diaphragm spring, 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, with most components available separately.

Specs

  • Torque Capacity: 700 ft/lbs (97% over OE)
  • Disc Material: Organic
  • Disc Diameter: 8.8 in / 225 mm
  • Input Shaft Diameter: 1 in
  • Pressure Plate Type: Heavy Duty
  • Product Weight: 28.1 lbs
  • SFI: 1.2

Performance Characteristics

  • 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 long-life performance under demanding conditions
  • Quality: Combines robust design, strategic features, premium materials, and close tolerances for maximum performance and high heat tolerance
  • Recommended Use: Street or Street/Strip
  • ACT Difference: Ultra-durable, customer-serviceable twin disc clutch, 100% clamp load tested, dynamically balanced, and SFI certified

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