• Action Clutch Stage 4 Clutch Kit | Subaru WRX (14-21) (ACR-1805-884006P)
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Action Clutch Stage 4 Clutch Kit | Subaru WRX (14-21) (ACR-1805-884006P)

Action Clutch Stage 4 Clutch Kit | Subaru WRX (14-21) (ACR-1805-884006P)

ACR-1805-884006P

In stock

$683.49 USD
$705.46 USD $683.49 USD
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The Action Clutch Stage 4 (1MD) Clutch Kit is a high-performance upgrade designed for the 2004-2021 Subaru WRX STI 2.5L (EJ257) turbocharged all-wheel-drive models. Constructed with a heavy-duty single diaphragm pressure plate and reinforced drive straps, this kit is engineered to deliver exceptional durability and reliable power transfer under demanding conditions. The inclusion of an Unsprung MIBA Ceramic disc, available in 4 or 6 puck configurations, ensures quicker engagement and improved response, making it suitable for spirited driving and track use. While some clutch chatter may occur during initial operation, proper break-in minimizes this effect, resulting in a smooth, consistent performance. This clutch kit is built to withstand extreme conditions, providing a robust solution for enthusiasts seeking enhanced clutch performance.

Designed specifically for 2004-2021 Subaru WRX STI models with the EJ257 engine, this Stage 4 clutch kit offers a direct bolt-on replacement for stock components. It is ideal for high-performance street driving, track days, and other demanding applications where durability and engagement speed are critical. The kit includes all necessary components for installation, ensuring a straightforward upgrade process. Suitable for vehicles requiring a significant increase in clamping force and torque capacity, this clutch kit enhances overall driving experience by providing reliable, high-performance engagement and longevity under aggressive driving conditions.

Overview

Action Clutch

Fits 2004–2021 Subaru WRX STI 2.5L Turbo AWD

Part #: ACR-1805-884006P

Overview

The Action Clutch Stage 4 (1MD) Clutch Kit is engineered to deliver exceptional durability and performance for Subaru WRX STI owners seeking reliable, high-capacity clutch solutions. Designed specifically for the 2004 to 2021 models equipped with the 2.5L turbocharged engine, this kit is ideal for enthusiasts and drivers who demand a combination of aggressive engagement and long-lasting performance. Whether you're upgrading for spirited driving, track use, or handling demanding conditions, this clutch kit provides the confidence and responsiveness needed to support your driving style. The kit features a heavy-duty single diaphragm pressure plate paired with reinforced drive straps, ensuring consistent power transfer and resistance to heat and wear. The included Unsprung MIBA Ceramic disc, available in 4 or 6 puck configurations, enhances engagement speed and provides a more direct feel, making it suitable for aggressive driving scenarios. While some clutch chatter may occur during break-in, proper bedding will optimize performance and longevity.

Key Features

This clutch kit combines robust materials and thoughtful design to meet the demands of high-performance driving. Key features include:
  • Heavy-duty single diaphragm pressure plate for increased clamping force
  • Reinforced drive straps for enhanced durability under high torque
  • Unsprung MIBA Ceramic disc for quick engagement and reliable power transfer
  • Available in 4 or 6 puck configurations to suit different driving preferences
  • Designed to withstand challenging conditions and aggressive driving styles
  • Optimized for low to mild horsepower vehicles requiring a high-performance upgrade

Construction & Design

The clutch components are crafted from high-quality ceramic materials and reinforced steel, ensuring resistance to heat, wear, and deformation. The design emphasizes durability and consistent performance, with a focus on providing a firm, predictable pedal feel and reliable engagement throughout demanding driving sessions.

Driving Feel & Feedback

This Stage 4 clutch kit offers a more direct and responsive engagement, giving drivers a confident connection to the vehicle’s powertrain. The ceramic disc enhances response, making throttle inputs feel sharper and more precise, ideal for spirited driving and track use. Some chatter during initial break-in is normal but will diminish with proper bedding.

Installation & Fitment

Installation requires mechanical expertise and proper alignment to ensure optimal performance. The kit is designed as a direct bolt-on replacement for the stock clutch, simplifying the upgrade process for qualified technicians or experienced enthusiasts.

What’s Included

The package includes the heavy-duty pressure plate, Unsprung MIBA Ceramic disc (4 or 6 puck), reinforced drive straps, and all necessary hardware for installation.

Ideal For

This clutch kit is perfect for Subaru WRX STI owners looking to enhance their vehicle’s clutch response and durability for aggressive driving, track days, or high-performance applications.
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