• ACT Mod Twin 225 Heavy Duty Sprung Race Clutch Kit w/ 6-Pad Discs | Subaru WRX STI (04-21) (T1R-S05)
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ACT Mod Twin 225 Heavy Duty Sprung Race Clutch Kit w/ 6-Pad Discs | Subaru WRX STI (04-21) (T1R-S05)

ACT Mod Twin 225 Heavy Duty Sprung Race Clutch Kit w/ 6-Pad Discs | Subaru WRX STI (04-21) (T1R-S05)

T1R-S05

In stock

$2,104.00 USD
$2,598.00 USD $2,104.00 USD
kADDITIONAL DISCOUNTS APPLIED AT CHECKOUT Sold out

The ACT Mod Twin 225 Heavy Duty Sprung Race Clutch Kit is a high-performance clutch system designed for Subaru WRX STI models from 2004 to 2021. This kit features a twin-disc configuration with six-pad discs, providing twice the surface area of standard single-disc setups. The increased disc surface enhances wear resistance, heat capacity, and overall longevity, making it suitable for demanding driving conditions. The clutch incorporates a proprietary Positive Lift Floater System, which ensures quiet operation without floater rattles or posts to wear, and is built with a four-stage heat-treating process on all diaphragms to maximize durability and performance.

Engineered for street and track use, this clutch kit is compatible with Subaru WRX STI vehicles within the 2004–2021 model years. It is a direct replacement upgrade that offers improved torque capacity and pedal feel, ideal for high-performance driving, spirited street use, or racing applications. The kit includes all necessary components for installation, ensuring a straightforward upgrade process. Designed to withstand high heat and stress, the ACT twin disc clutch provides reliable engagement and long-lasting performance for enthusiasts seeking enhanced clutch life and consistent power transfer.

Overview

Subaru STI Mod Twin HD Clutch Kit (Sprung Hub / 6-Pad Discs) by ACT

T1R-S05 Mod twin race kit offers twice the number of disc surfaces for better wear, heat capacity and long life compared to single disc kits. These kits use a proprietary Positive Lift Floater System design, which results in quiet operation with no floater rattle and no posts to wear. ACT twin disc kits endure an exclusive four-stage, heat treating process performed on all diaphragms. The ACT twin disc features the ability to adjust for disc wear and provides equal disengagement for discs.

ACT’s 6-pad rigid race discs are made with high quality, ceramic friction materials. The chrome-moly hub is heat-treated for strength and durability. The lightweight, rigid design allows for quicker shifts and trouble-free service. All ACT twin disc kits include a CNC-machined and dynamically balanced flywheel to ensure trouble-free installation and operation. ACT twin disc kits include a pressure plate, two discs, a floater, flywheel and alignment tool. Some kits may include a pilot bearing and release bearing.

Features

  • Light pedal effort, quicker shifts, aggressive engagement, mild to moderate gear rattle
  • Doubles the number of disc surfaces for better wear, heat capacity and longer life, extended by ACT's exclusive diaphragm design
  • Carefully engineered, precisely assembled, accurately balanced, uses select ceramic friction materials for high heat tolerance and maximum performance
  • Recommended for race use only
  • 100% clamp load tested and dynamically computer balanced for smooth high RPM reliability

Please Note: The image used is generic. The clutch kit you receive may not be exactly what is shown.

Applications

  • 2004 - 2021 Subaru STI

What's In The Box?

  • 1 - Mod Twin HD Race Clutch Kit

Warranty

  • Manufacturer Standard Warranty
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