Yukon Gear & Axle Spin Free Locking Hub Conversion Kit

2012–2018 Ram 2500/3500 5.7L Hemi, 6.4L 392, 6.7L Diesel

Part #: YA WU-13

Overview

The Yukon Gear & Axle Spin Free Locking Hub Conversion Kit is engineered to enhance the drivetrain efficiency of your Ram 2500 or 3500, covering model years 2012 through 2018 with 5.7L Hemi, 6.4L 392, and 6.7L Diesel engines. This kit replaces the factory’s failure-prone unit bearings with durable tapered bearings and races, providing a more reliable and serviceable solution. Designed for truck owners seeking improved fuel economy and reduced maintenance costs, the Spin Free Kit also features Yukon’s low-profile Hardcore Premium Locking Hubs for seamless switching between two-wheel and four-wheel drive modes.

By reducing parasitic drag through fewer rotating components in the drivetrain, this conversion kit delivers noticeable gains in fuel efficiency without compromising ruggedness or performance. It’s an ideal upgrade for Ram owners who demand durability and economy from their 4x4 system.

Key Features

The Yukon Spin Free Locking Hub Conversion Kit combines innovative design with premium materials to deliver lasting value and performance:

• Replaces factory unit bearings with tapered bearings and races for enhanced durability
• Reduces drivetrain parasitic drag, improving fuel efficiency and MPG
• Includes Yukon Hardcore Premium Locking Hubs with a low-profile design for quick engagement
• Designed specifically for 2012–2018 Ram 2500 and 3500 models with 5.7L Hemi, 6.4L 392, and 6.7L Diesel engines
• Improves serviceability and lowers maintenance costs compared to factory components
• Precision-engineered to maintain proper fit and function with OEM drivetrain components
• Constructed to withstand heavy-duty off-road and towing demands
• Helps extend the lifespan of front axle components by reducing unnecessary rotation

Construction & Design

Yukon Gear & Axle builds the Spin Free Locking Hub Conversion Kit with high-quality materials engineered for strength and longevity. The tapered bearings and races replace the factory’s unit bearing design, offering superior load handling and easier maintenance. The locking hubs are crafted from premium-grade steel with a low-profile form factor that minimizes exposure to damage while providing reliable engagement. Every component is precision-machined to meet or exceed OEM specifications, ensuring seamless integration with your Ram’s front axle assembly.

The design focuses on reducing rotating mass and parasitic drag in the drivetrain, which not only improves fuel economy but also reduces wear on drivetrain components. Yukon’s commitment to quality ensures this kit performs reliably under demanding conditions, whether on the highway, off-road, or during heavy towing.

Installation & Fitment

The Spin Free Locking Hub Conversion Kit is a direct-fit upgrade for 2012–2018 Ram 2500 and 3500 trucks equipped with 5.7L Hemi, 6.4L 392, or 6.7L Diesel engines. Installation requires removal of the factory unit bearings and hubs, followed by installation of the tapered bearings, races, and Yukon locking hubs. While professional installation is recommended for best results, experienced DIYers with proper tools can complete the swap with moderate mechanical skill. No major modifications to the axle or drivetrain are necessary, preserving factory alignment and performance.

What's Included

• Tapered bearings and races to replace factory unit bearings
• Yukon Hardcore Premium Locking Hubs (low-profile design)
• All necessary hardware for installation
• Detailed installation instructions

Ideal For

This conversion kit is perfect for Ram 2500 and 3500 owners who want to improve fuel economy, reduce front axle maintenance, and enjoy reliable four-wheel drive engagement. It suits daily drivers, off-road enthusiasts, and heavy-duty users who demand durability and efficiency from their drivetrain components. If you’re looking to upgrade your factory locking hubs to a more robust, serviceable, and fuel-efficient system, the Yukon Spin Free Locking Hub Conversion Kit is an excellent choice.

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.