Differentials & Axles

This collection holds the parts inside and around the axle housing: gear setup and rebuild parts, traction lockers, differential bushings and diff drop kits. Much of it is sold by axle model rather than by vehicle, so the first step is knowing which axle your truck has and how many splines its shafts carry.

Motive Gear supplies the bulk of the range, and most of it is setup hardware: pinion shims, carrier shim kits and ring gear spacers, the small parts that set gear position when new gears go in or an axle is rebuilt. Rugged Ridge sells install kits and master rebuild kits for common Jeep axles such as the Dana 30 and Dana 44.

For traction, ARB Air Lockers are listed by axle model and spline count, for example a Dana 44 with 32 splines or a Dana 70, and some are listed for one vehicle, such as the rear axle of the Jeep Wrangler. An air locker is engaged by compressed air, so plan for an air source and its lines when you budget the job.

Diff drop kits from ReadyLift and ICON Vehicle Dynamics lower the front differential on lifted trucks with independent front suspension, which brings the front axle shaft angles back toward their factory range. They belong with the suspension work; see lift kits. On the Ford Mustang, BMR Suspension differential bushing kits in aluminum or polyurethane reduce how much the rear differential moves under load.

Vehicle coverage is strongest for the Ford F-150, Ford Bronco, Ford F-250, Jeep Wrangler, Jeep Cherokee, Dodge Ram 2500, Chevrolet Blazer and GMC K2500. Each product page lists the years, makes and models it fits, and the vehicle selector filters this page to your truck; for parts sold by axle model, confirm the axle and spline count as well. The full ARB range has its own page, and the wider engine and driveline department holds the rest of the drivetrain. Prices are in Canadian dollars.