Action Clutch Stage 5 Clutch Kit

2004–2021 Subaru WRX STI 2.5L DOHC EJ257 Turbo AWD

Part #: ACR-1806

Overview

The Action Clutch Stage 5 Clutch Kit is designed for high-performance Subaru WRX STI owners seeking maximum holding capacity and aggressive engagement. Built with durability and strength in mind, this clutch system is ideal for spirited driving, track use, or applications where increased power handling is essential. Whether you're upgrading for increased horsepower or demanding more from your existing setup, this clutch kit provides the reliability and performance you need to push your vehicle to the limit.

Equipped with iron buttons and a 6-puck sprung design, the Stage 5 Clutch delivers a significant increase in torque capacity, making it suitable for heavily modified or high-output engines. The aggressive engagement and increased pedal pressure give you precise control during spirited driving, while the rapid heat dissipation ensures consistent performance under demanding conditions. This clutch kit is engineered to support your vehicle's increased power levels without sacrificing drivability or reliability.

Key Features

The Action Clutch Stage 5 Clutch Kit incorporates several advanced features to enhance your Subaru WRX STI's performance:

• High-Capacity Iron Buttons: The use of iron buttons provides superior durability and heat resistance, enabling the clutch to handle increased power and aggressive driving styles.
• 6-Puck Sprung Design: The six-puck configuration offers a balance between aggressive engagement and smooth operation, reducing shock loads on drivetrain components.
• Dual Clamp Diaphragm: The single dual clamp diaphragm pressure plate ensures even pressure distribution, improving clutch engagement and longevity.
• Heavy-Duty Pressure Plate: Reinforced drive straps and a dual clamp load design provide exceptional holding capacity, supporting 200-400% more torque than stock clutches.
• Rapid Heat Dissipation: The robust construction helps dissipate heat quickly, maintaining consistent performance during extended or aggressive driving sessions.
• Pedal Feel: Expect a heavier pedal with a more aggressive engagement point, giving you precise control during high-performance driving.

Construction & Design

The Action Clutch Stage 5 Clutch Kit features a high-quality iron button clutch system mounted on a reinforced pressure plate. The clutch disc's six-puck sprung design is engineered for aggressive engagement while minimizing shock loads to the drivetrain. The pressure plate utilizes a dual clamp diaphragm, which distributes clamping force evenly across the clutch disc, ensuring reliable engagement and durability. All components are manufactured with precision to meet or exceed OEM standards, providing a perfect fit and long-lasting performance.

The heavy-duty construction and heat-resistant materials make this clutch ideal for high-stress applications, including racing, drifting, or heavily modified street cars. The design emphasizes heat dissipation and consistent engagement, allowing you to maintain control even during extended high-RPM sessions or aggressive launches.

Installation & Fitment

The Action Clutch Stage 5 Clutch Kit is a bolt-on upgrade that fits directly onto your Subaru WRX STI with a 2.5L DOHC EJ257 turbocharged engine from 2004 to 2021. Installation typically requires standard mechanical skills and tools; however, professional installation is recommended to ensure proper setup and alignment. No cutting or drilling is necessary, and the kit is designed to work with your vehicle's existing clutch master and slave cylinders. Proper break-in procedures are advised to maximize clutch life and performance.

• Direct bolt-on replacement for factory clutch components
• No cutting, drilling, or modifications required
• Compatible with stock or upgraded drivetrain components

What's Included

• 6-puck sprung clutch disc with iron buttons
• Heavy-duty reinforced pressure plate with dual clamp diaphragm
• Complete hardware kit for installation
• Instruction manual

Ideal For

• High-performance Subaru WRX STI owners
• Enthusiasts seeking increased torque capacity and aggressive engagement
• Track racers and drift enthusiasts
• Vehicles with modified or upgraded engines producing higher horsepower