Action Clutch IRONMAN Sprung (Street) Clutch Kit

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

Part #: ACR-1808

Overview

The Action Clutch IRONMAN Sprung (Street) Clutch Kit is a high-performance clutch solution designed specifically for Subaru WRX STI models from 2004 to 2021 equipped with the 2.5L DOHC EJ257 turbocharged engine. Built to withstand demanding driving conditions, this clutch kit offers exceptional durability and reliable performance for enthusiasts who push their vehicles on the street and track alike. Whether you're upgrading for increased horsepower or seeking a more responsive pedal feel, the IRONMAN clutch provides the strength and engagement you need to handle spirited driving and high-power applications.

Engineered with a focus on increased holding capacity, this clutch system is ideal for drivers who require a robust component capable of managing power levels above 550 horsepower. Its design ensures you get a heavy pedal feel with smooth engagement, giving you confident control during aggressive shifts and spirited driving sessions. The IRONMAN clutch kit is a proven choice for those who demand both performance and longevity from their clutch system.

Key Features

The Action Clutch IRONMAN Sprung Clutch Kit incorporates advanced materials and engineering to deliver superior performance in demanding conditions. Key features include:

• Sintered Iron 6-Puck Clutch Disc: Provides excellent heat resistance and high torque capacity, making it suitable for track use and high-horsepower applications.
• Single Dual Clamp Diaphragm Design: Ensures even pressure distribution and consistent engagement, reducing the risk of slippage under heavy loads.
• Heavy Pedal Feel with Smooth Engagement: Offers a tactile, responsive pedal that allows precise control during aggressive driving.
• Increased Holding Capacity: Specifically designed to handle power levels exceeding 550hp, making it a reliable upgrade for modified Subaru WRX STI models.
• Track-Use Focused: Built strictly for track applications, this clutch is optimized for high-performance driving scenarios, providing maximum grip and durability.
• Strictly for Track Use: Not recommended for daily driving due to its heavy pedal feel and aggressive engagement characteristics.

Construction & Design

The IRONMAN clutch kit features a robust sintered iron puck disc that excels in high-temperature environments, ensuring consistent performance during extended track sessions. The sprung hub design helps dampen vibrations and shock loads, contributing to smoother engagement and reduced stress on drivetrain components. The clutch components are engineered with precision to fit seamlessly into your Subaru WRX STI, utilizing high-quality materials and manufacturing processes such as TIG welding and CNC machining for durability and exact fitment.

This setup is designed to withstand the rigors of high-horsepower builds, with a focus on heat dissipation and long-term reliability. The heavy-duty construction ensures that the clutch maintains its grip even under extreme conditions, making it an excellent choice for serious track enthusiasts and racers who demand maximum performance from their vehicle's clutch system.

Installation & Fitment

The IRONMAN clutch kit is a bolt-on upgrade designed for direct replacement of your factory clutch components. Installation typically involves removing the existing clutch assembly and replacing it with the new IRONMAN components. Due to its track-focused design, some drivers may experience a heavier pedal feel compared to stock, but no additional modifications are generally required. It is recommended that this clutch be installed by a professional mechanic familiar with high-performance Subaru builds to ensure proper setup and alignment. No cutting, drilling, or tuning is necessary, making it a straightforward upgrade for qualified technicians.

• Complete clutch system with disc, pressure plate, and release bearing
• All necessary hardware and instructions included

What's Included

• Ironman 6-Puck Sintered Iron Clutch Disc
• Heavy-Duty Pressure Plate
• Release Bearing
• Installation Hardware and Instructions

Ideal For

• High-horsepower Subaru WRX STI owners seeking maximum clutch capacity
• Track enthusiasts and racers demanding reliable grip under extreme conditions
• Drivers upgrading their clutch system for aggressive street and track use