ACT XACT Pro Mass Flywheel

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

601325

Overview:

The ACT XACT Pro Mass Flywheel is engineered to enhance the driving experience for Jeep enthusiasts who demand superior performance both on and off the road. Designed with increased inertia, this flywheel improves climbing and pulling capabilities, delivering confidence-inspiring momentum over obstacles. It is an ideal upgrade for Jeep Wrangler and Gladiator models from 2005 through 2026, including the Grand Cherokee from 2005 to 2010.

This flywheel offers a perfect balance of added mass for torque retention without excessive weight, ensuring smooth power delivery and improved driveline response. Whether you’re tackling rock crawling, towing heavy loads, or running large tires, the ACT XACT Pro Mass Flywheel provides reliable performance and durability for street and off-road use.

Key Features:

Built to meet the demands of serious Jeep drivers, the ACT XACT Pro Mass Flywheel incorporates advanced design and manufacturing techniques:

• Increased inertia for enhanced climbing and pulling power
• Optimized mass distribution for maximum inertia with minimal weight penalty
• Heat-treated forging for superior strength and toughness
• Induction-hardened ring gears to extend service life
• One-piece construction acting as an efficient heat sink to reduce clutch wear
• Eliminates common issues found in dual-mass flywheels such as gear rattle and warped inserts
• Resurfacing capability without the need for additional parts
• Dynamically computer balanced and CNC machined for smooth operation
• Recommended for both street driving and demanding off-road conditions
• Backed by a one-year warranty, underscoring ACT’s commitment to quality

Construction & Design:

The ACT XACT Pro Mass Flywheel is forged from high-grade steel and undergoes precision CNC machining to ensure exact tolerances and balance. Its one-piece design eliminates the complexity and potential failure points associated with dual-mass flywheels, such as loose ring gears or warped inserts. The heat-treated forging process enhances durability, while the induction-hardened ring gear provides long-lasting engagement with the starter motor.

This robust construction not only improves reliability but also serves as an effective heat sink, helping to dissipate heat generated by the clutch during operation. This reduces the risk of clutch fade and extends the lifespan of your drivetrain components.

Performance & Sound

By increasing the flywheel’s inertia, the ACT XACT Pro Mass Flywheel delivers smoother power delivery and reduces driveline slop, which is especially noticeable when using large tires or towing heavy loads. Unlike dual-mass flywheels, it eliminates gear rattle, resulting in a quieter and more refined driving experience. The enhanced momentum helps maintain engine speed during low RPM maneuvers, making it ideal for rock crawling and technical off-road driving.

Installation & Fitment:

The ACT XACT Pro Mass Flywheel is designed as a direct replacement for the factory flywheel on compatible Jeep models, requiring no modifications for installation. It fits a wide range of Jeep vehicles, including the Wrangler and Gladiator from 2007 to 2026, as well as the Grand Cherokee from 2005 to 2010. Installation should be performed by a qualified technician to ensure proper torque specifications and clutch alignment.

What's Included:

• ACT XACT Pro Mass Flywheel (Part #601325)
• Installation instructions

Ideal For:

This flywheel is perfect for Jeep owners who demand enhanced torque retention and driveline stability for off-road adventures, towing, or running larger tires. It suits enthusiasts who want a durable, serviceable flywheel that improves vehicle responsiveness without sacrificing reliability or requiring frequent replacement.

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.