37 Years of Servicing Southern California Tel: (714) 630-4327

Our vision

Unitrax Differentials: Your Go-To Experts for Drivetrain in Southern California and Beyond

With 37 years of experience, Unitrax Differentials is the premier provider of differential repairs, rebuilds, and upgrades for all types of vehicles. We strive to exceed our customers’ expectations and ensure their vehicles perform at their best.

Our knowledgeable mechanics, sales team, and top-quality parts allow us to offer the best possible service to our customers. We are proud to distribute and install parts from only the most reliable and trusted companies in the drivetrain industry, including Dana Spicer, American Axle, Timken, OS Giken, Motive Gear, Transfer Flow, Eaton, Neapco, CHA, Gear Vendors, Wavetrac, US Gear, Motul, Schaeffer’s, and Synergyn Lubricants.

In 2020, Unitrax was acquired by JBM Off Road and recently moved to a 45,000 square feet facility in Corona, CA. This new facility offers ample parking and allows us to offer full services to all customers.

Whether you need a differential repair for your off-road truck, Jeep, SUV, commercial vehicle, or classic car, Unitrax Differentials is the go-to experts. Contact us today to learn more about our services or to schedule an appointment.


or Mark@JBMoffroad.com

Team story

At UNITRAX Differentials, our team of dedicated mechanics have been specializing in differential repairs since 1984. With a passion for all things axle and drivetrain, we take pride in providing expert services for a wide range of vehicles, from off-road trucks to hot rods and classic cars. With our informal and friendly approach, we strive to offer top-notch solutions and the highest quality parts to ensure our customers’ satisfaction.