Locking Hub Conversion Kit Your hard-core rig can handle white-knuckling down the trails with no problem, and now you can take it on the pavement when you head for home. Swap out your existing front axle unit with one of the manual locking hub conversion kits from 4WD.com and open up new venues for your ride to explore. Our Jeep locking hub conversion kits come with all the parts you need for installation, from the Jeep locking hub spindle nut to the Jeep locking hub o-ring. When you install one of these kits on your rig, your days of having to trailer your ride back and forth to trails are over. Our Select Vehicle tool lets you find the exact match for your specific make and model.