ACT Heavy Duty Pro Mass HD-O Race Sprung 6-Pad Clutch Kit

2005–2010 Jeep Grand Cherokee, 2007–2018 Jeep Wrangler, 2018–2026 Jeep Wrangler / Gladiator

JP6-HDG6

Overview:

The ACT Heavy Duty Pro Mass HD-O Race Sprung 6-Pad Clutch Kit is engineered for serious off-road enthusiasts and racers who demand superior torque capacity and durability. Designed to fit a wide range of Jeep models including Wrangler and Gladiator from 2007 through 2026, as well as select Grand Cherokee models, this clutch kit delivers aggressive engagement with quiet operation and enhanced toughness. It is ideal for drivers seeking a performance clutch that withstands the rigors of off-road racing and heavy-duty use without sacrificing drivability.

Featuring ACT’s exclusive diaphragm design and a spring-center 6-pad race disc, this clutch kit offers increased clamp load, reduced deflection, and extended clutch life. Whether tackling challenging terrain or pushing your Jeep to its limits, the HD-O Race Sprung clutch kit provides reliable power transfer and smooth shifting under demanding conditions.

Key Features:

Built with precision and performance in mind, the ACT Heavy Duty Pro Mass HD-O Race Sprung 6-Pad Clutch Kit includes:

• Heavy Duty pressure plate with ACT’s exclusive diaphragm design for increased clamp load and reduced deflection
• Spring-center 6-pad race disc featuring premium ceramic friction materials for high heat tolerance and consistent power hold
• Robust spring center section to absorb driveline shock and reduce drivetrain wear
• Four-stage heat-treated diaphragms for enhanced durability and performance under extreme conditions
• Precision pressure plate cover stampings for rigidity and consistent clamp force
• Precision machined pressure plate castings designed to absorb and dissipate heat effectively
• Light to moderate pedal effort with aggressive engagement for confident shifting
• OE to mild gear rattle compatibility, maintaining drivability while delivering race-level performance
• 100% clamp load tested and dynamically computer balanced for smooth operation at high RPM
• Key areas induction hardened to extend service life and reliability

Construction & Design:

The ACT HD-O Race Sprung clutch kit is meticulously engineered using premium materials and advanced manufacturing processes. The pressure plate features a unique diaphragm spring design that enhances clamp load while minimizing deflection, resulting in improved clutch life and consistent performance. The four-stage heat treatment applied to the diaphragm springs ensures they maintain strength and resilience even under extreme thermal stress.

The 6-pad race disc incorporates high-quality ceramic friction materials that provide excellent heat resistance and wear characteristics. Its spring-centered hub absorbs driveline shock, reducing stress on transmission components and improving overall drivetrain longevity. The pressure plate cover is precision stamped for structural rigidity, while the machined castings efficiently manage heat buildup during aggressive driving.

Performance & Sound

This clutch kit is designed to deliver aggressive engagement with light to moderate pedal effort, making it suitable for race and high-performance off-road applications. It maintains a balance between performance and drivability, producing minimal gear rattle while providing confident shifts under load. The premium ceramic friction materials ensure consistent power transfer and heat tolerance, even in the most demanding conditions.

Installation & Fitment:

The ACT Heavy Duty Pro Mass HD-O Race Sprung 6-Pad Clutch Kit is a direct fit for a broad range of Jeep models, including the Jeep Grand Cherokee (2005–2010), Jeep Wrangler (2007–2018 and 2018–2026), and Jeep Gladiator (2018–2026). Installation requires standard clutch replacement procedures and is recommended to be performed by a professional or experienced technician to ensure optimal performance and longevity. No major modifications are typically necessary, but proper alignment and torque specifications should be followed.

What's Included:

• Heavy Duty Pro Mass HD-O pressure plate
• Spring-center 6-pad race disc with ceramic friction material
• Premium bearings and hardware for installation
• Comprehensive instructions and warranty information

Ideal For:

This clutch kit is ideal for Jeep owners who participate in off-road racing, trail driving, or require a clutch capable of handling increased torque and abuse. It suits enthusiasts looking for a durable, high-performance clutch that balances aggressive engagement with reliable operation and extended service life. Recommended for race use and serious off-road applications where clutch performance and toughness are paramount.

ACT (Advanced Clutch Technology) engineers performance clutches and flywheels built for consistent engagement, higher torque capacity, and durability in street and race use. The brand emphasizes quality and reliability and is widely used by enthusiasts who need driveline components that can handle repeated hard launches, shifts, and track abuse.