• ACT Mod Twin 225 Heavy Duty Rigid Hub Race Kit w/ 6-Pad Discs | Subaru WRX STI (04-20) (T1R-S07)
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ACT Mod Twin 225 Heavy Duty Rigid Hub Race Kit w/ 6-Pad Discs | Subaru WRX STI (04-20) (T1R-S07)

ACT Mod Twin 225 Heavy Duty Rigid Hub Race Kit w/ 6-Pad Discs | Subaru WRX STI (04-20) (T1R-S07)

T1R-S07

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$2,047.00 USD
$2,527.00 USD $2,047.00 USD
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The ACT Mod Twin 225 Heavy Duty Rigid Hub Race Kit with 6-Pad Discs is a high-performance clutch upgrade designed for Subaru WRX STI models from 2004 to 2020. This twin disc clutch system features twice the surface area of standard single disc setups, providing improved wear resistance, higher heat capacity, and extended durability under demanding driving conditions. Constructed with a proprietary Positive Lift Floater System, the kit ensures quiet operation without floater rattle or post wear, making it suitable for aggressive street or race applications. The components undergo an exclusive four-stage heat treating process on all diaphragms, enhancing strength and longevity. This kit delivers reliable engagement and consistent performance, ideal for enthusiasts seeking a robust clutch solution.

Designed for 2004–2020 Subaru WRX STI models, this race-ready clutch kit is a direct replacement for stock components, offering increased clamping force and heat dissipation. It is suitable for high-performance driving, including track use, spirited street driving, and other demanding applications. The kit includes a rigid hub assembly and six-pad discs, providing a balanced combination of durability and smooth engagement. Installation is intended for experienced technicians familiar with clutch upgrades, and the system is optimized for vehicles requiring a heavy-duty upgrade to handle increased power and torque. This clutch kit ensures reliable performance under extreme conditions while maintaining drivability.

Overview

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

T1R-S07 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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