ACT Heavy Duty Race Rigid 4 Pad Clutch Kit

2011–2025 Acura J30/J32 / Honda J30/J32

Part #: AT2-HDR4

Overview

The ACT Heavy Duty Race Rigid 4 Pad Clutch Kit is designed for high-performance driving enthusiasts who demand maximum durability and reliable power transfer. Built with race-proven technology, this clutch kit is ideal for spirited street driving, track days, and off-road applications where clutch performance and longevity are critical. Whether you're upgrading your daily driver or building a dedicated race car, this kit provides the strength and consistency needed to handle increased horsepower and aggressive driving styles.

Featuring ACT's most popular Heavy Duty pressure plate, this kit ensures a significant upgrade over stock clutches by providing increased clamp load and reduced flex under heavy loads. The result is improved pedal feel, better engagement, and enhanced clutch life, making it a perfect choice for performance-oriented drivers who want to push their vehicle's limits without sacrificing reliability.

Key Features

ACT's Heavy Duty Race Rigid 4 Pad Clutch Kit incorporates several advanced features designed to maximize performance and durability:

• Exclusive diaphragm design increases clamp load and reduces deflection, ensuring consistent engagement and power transfer under demanding conditions.
• Four-stage heat-treating process applied to all diaphragms enhances strength, resilience, and heat resistance, extending clutch life even in high-stress environments.
• Precision cover stampings provide increased rigidity and uniform pressure distribution across the clutch surface, promoting smooth engagement and reducing chatter.
• High-quality ceramic friction materials used in the 4-pad rigid race discs deliver excellent heat dissipation, fade resistance, and durability for aggressive driving and racing applications.
• Chrome-moly hub is heat-treated for added strength and longevity, ensuring reliable operation during intense use.
• Designed to withstand the rigors of racing while maintaining excellent street manners, making it a versatile upgrade for performance enthusiasts.

Construction & Design

This clutch kit features a robust construction with high-grade materials engineered for maximum performance. The pressure plate is crafted from a durable alloy with a carefully engineered diaphragm to provide consistent clamp load and minimal flex. The four-pad race discs utilize high-quality ceramic friction materials, which are known for their excellent heat resistance and longevity. The chrome-moly hub is heat-treated to withstand extreme conditions, ensuring reliable engagement and power transfer over countless miles and laps.

The design emphasizes rigidity and precision, with all components manufactured to tight tolerances. The use of advanced heat-treating processes and high-quality materials ensures that this clutch kit can handle increased power levels while maintaining smooth operation and long service life.

Installation & Fitment

The ACT Heavy Duty Race Rigid 4 Pad Clutch Kit is a bolt-on upgrade that uses the factory mounting points and hardware. No cutting, drilling, or modifications are required for proper installation. However, due to the increased clamp load and performance characteristics, it is recommended to have the installation performed by a professional mechanic familiar with high-performance clutch setups. Proper break-in procedures should be followed to ensure optimal performance and longevity.

• Complete clutch kit with pressure plate, race discs, and necessary hardware
• Designed for easy installation with OEM components

What's Included

• Heavy Duty pressure plate
• 4-pad rigid race clutch discs with ceramic friction material
• All necessary mounting hardware and release bearings
• Installation instructions

Ideal For

• Performance enthusiasts seeking maximum durability and power handling
• Track racers and autocross competitors
• Drivers pushing their vehicle beyond stock power levels
• Off-road applications requiring a robust clutch solution