• ACT Mod Twin 225 Heavy Duty Rigid Street Clutch Kit w/ Organic Discs | Subaru WRX STI (04-21) (T1S-S07)
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ACT HD Twin Organic Street Clutch Kit | Subaru WRX STI (04-21) (T1S-S07)

ACT HD Twin Organic Street Clutch Kit | Subaru WRX STI (04-21) (T1S-S07)

T1S-S07

In stock

$1,929.00 USD
$2,381.00 USD $1,929.00 USD
kADDITIONAL DISCOUNTS APPLIED AT CHECKOUT Sold out

The ACT HD Twin Organic Street Clutch Kit for Subaru WRX STI (2004-2021) is a high-performance clutch system designed to enhance durability and heat capacity for spirited driving. Featuring a twin disc configuration with organic friction discs and a rigid hub, this kit provides twice the surface area of single disc setups, resulting in improved wear characteristics and longer service life. The proprietary Positive Lift Floater System ensures quiet operation without floater rattle or posts to wear, while the four-stage heat-treating process on all diaphragms enhances strength and reliability. This clutch kit is engineered to deliver smooth engagement, consistent performance, and increased torque capacity, making it suitable for both daily driving and aggressive street use.

Designed specifically for 2004-2021 Subaru WRX STI models, this clutch kit is a direct replacement for the stock unit, offering a straightforward bolt-on installation. It is compatible with stock and modified engines, providing reliable engagement for high-performance applications. The kit includes all necessary components for installation, ensuring a complete upgrade. Ideal for enthusiasts seeking improved clutch life and performance, this ACT twin disc setup is well-suited for street driving, spirited runs, and moderate track use. Its robust construction and advanced design make it a dependable choice for demanding driving conditions.

Overview

ACT Clutch Kits

Part #: T1S-S07

Overview

The ACT HD Twin Organic Street Clutch Kit for Subaru WRX STI (04-21) is a high-performance clutch solution designed for enthusiasts seeking improved durability and heat capacity. This twin disc clutch kit features a Rigid Hub with Organic Discs, providing a balance of street-friendly engagement and long-lasting performance. Ideal for daily drivers, spirited street use, and light track days, this clutch enhances your vehicle’s response and reliability under demanding conditions. Its design supports smoother engagement and increased holding capacity, making it suitable for modified or heavily driven Subaru WRX STI models.

Key Features

This clutch kit incorporates advanced materials and innovative design features to optimize performance and longevity:
  • Dual disc surfaces for increased wear resistance and heat dissipation
  • Proprietary Positive Lift Floater System for quiet operation and rattle-free performance
  • Four-stage heat-treating process on diaphragms for enhanced strength and durability
  • Organic friction material for smooth engagement and consistent pedal feel
  • Rigid hub design to improve response and reduce flex under load
  • Engineered for reliable street performance with light to moderate modifications

Construction & Design

The clutch features a robust twin disc setup with a proprietary floater system that eliminates floater rattle and minimizes posts wear. The materials are carefully selected and heat-treated to withstand high temperatures, ensuring consistent performance over time. The organic friction discs are designed to provide a smooth, progressive engagement, reducing pedal effort and enhancing drivability.

Driving Feel & Feedback

This clutch kit offers a firm yet smooth engagement, supporting confident driving and responsive throttle response. The design reduces chatter and slip, providing a predictable pedal feel that helps you maintain control during aggressive driving or daily commuting.

Installation & Fitment

Installation should be performed by a qualified technician familiar with Subaru WRX STI models. Proper setup ensures optimal performance and longevity. Fitment details should be verified against the vehicle’s specifications and the part number provided.

What’s Included

The kit includes all necessary clutch discs, pressure plate, floater system components, and hardware required for installation, ensuring a complete upgrade for your vehicle’s clutch system.
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