Replace the unitized hub bearings on your 4WD with Yukon's spin-free locking hub conversion kit. Each spindle is constructed with 4340 chromoly steel alloy while utilizing Timken bearings and premium seals to ensure top performance. It's no secret that oversize tires and negative-offset wheels put a huge strain on unitized bearing assemblies. Yukon spin-free hub conversion kits provide vastly improved durability and can improve fuel economy in daily driving. | Yukon Spin-Free Locking Hub Conversion Kit YA WU-15