Yukon Gear & Axle Spin Free Locking Hub Conversion Kit

2007–2018 Jeep Wrangler, 2005–2010 Jeep Grand Cherokee

YA WU-15

Overview:

The Yukon Gear & Axle Spin Free Locking Hub Conversion Kit is engineered to enhance the drivetrain efficiency and durability of your Jeep Wrangler and Grand Cherokee. Designed to replace the factory unit bearings, which are prone to failure and costly maintenance, this kit utilizes tapered bearings and races for a more reliable and serviceable solution. Ideal for off-road enthusiasts and daily drivers alike, the Spin Free Kit reduces parasitic drag in the drivetrain, resulting in improved fuel economy and lower maintenance costs.

Equipped with Yukon’s low-profile Hardcore Premium Locking Hubs, this conversion kit allows for quick and effortless switching between two-wheel and four-wheel drive modes. This kit is a comprehensive upgrade that combines durability, ease of service, and enhanced vehicle performance.

Key Features:

Built to deliver long-lasting performance and improved efficiency, the Yukon Spin Free Locking Hub Conversion Kit offers the following key features:

• Replaces vulnerable and expensive factory unit bearings with tapered bearings and races for increased reliability
• Includes low-profile Yukon Hardcore Premium Locking Hubs for quick engagement and disengagement of 4WD
• Reduces parasitic drag in the drivetrain, leading to better fuel efficiency and improved MPG
• Heavy-duty 4340 chromoly 30-spline outer axles for superior strength and durability
• Compatible with 5 x 5.5-inch wheel bolt pattern and requires a minimum 105 mm (4.130 in.) wheel pilot diameter
• Includes front double-drilled rotors for enhanced braking performance (rear rotors sold separately)
• Designed to fit Dana 44 axles with 7166 u-joint size, including necessary upgrades for Dana 30 stock front axles (2007–2011)
• Complete kit contains all necessary components for a seamless installation

Construction & Design:

The Spin Free Locking Hub Conversion Kit is crafted with premium materials to withstand the rigors of off-road use and daily driving. The outer axles are constructed from heavy-duty 4340 chromoly steel, known for its exceptional strength and resistance to wear. The tapered bearings and races replace the factory unit bearings, offering a design that is easier to service and more durable under demanding conditions.

Yukon’s Hardcore Premium Locking Hubs feature a low-profile design that minimizes exposure to damage while providing reliable engagement. The front rotors are double-drilled to improve heat dissipation and braking efficiency, contributing to safer and more consistent stopping power.

Installation & Fitment:

This kit is designed for straightforward installation on a wide range of Jeep models, including the Jeep Wrangler (2007–2018) and Jeep Grand Cherokee (2005–2010). It requires 5 x 5.5-inch wheels and a wheel pilot diameter of at least 105 mm (4.130 inches). For 2007–2011 Jeep Wrangler models with Dana 30 stock front axles, inner axles with 1350 series (7166x u-joint size) are also required to complete the upgrade.

The kit replaces the factory unit bearings and includes all components necessary for a complete conversion, minimizing the need for additional parts or modifications. Professional installation is recommended to ensure proper fitment and optimal performance.

What's Included:

• Yukon Hardcore Premium Locking Hubs (Dana 44 compatible)
• Heavy-duty 4340 chromoly 30-spline outer axles
• Tapered bearings and races to replace factory unit bearings
• Front double-drilled rotors
• All necessary hardware and components for installation

Ideal For:

This conversion kit is ideal for Jeep owners seeking to improve drivetrain reliability, reduce maintenance costs, and increase fuel efficiency. It is especially suited for off-road enthusiasts who require durable locking hubs and heavy-duty axles, as well as daily drivers looking to enhance their vehicle’s performance and longevity. The Yukon Spin Free Kit offers a practical upgrade for Jeep Wrangler and Grand Cherokee models from 2005 through 2018.

Yukon Gear & Axle supplies hardcore drivetrain components—ring & pinion gears, axles, lockers, and differential upgrades—built for off-road and high-load performance. Trusted by enthusiasts and installers, Yukon focuses on fit, strength, and proven options for re-gearing and reinforcing trucks and 4x4s running bigger tires and tougher terrain.