Differentials — Lockers, LSD & Open Diff Upgrades

Differentials — Lockers, LSD & Open Diff Upgrades

Differentials distribute engine torque between drive wheels, allowing them to rotate at different speeds through corners while maintaining traction. Upgrading from a factory open differential to a limited-slip or locking differential is one of the most impactful drivetrain improvements you can make for towing, off-roading, drag racing, or any application where both wheels need to work together under load.

Popular Differential Upgrades

Top upgrades include Eaton Detroit Locker and Eaton Truetrac limited-slip units for GM, Ford, Dana, and Chrysler axles, ARB Air Lockers for Jeep and truck off-road applications, and OS Giken Super Lock LSD units for JDM performance platforms. Locker conversions for Dana 44 and Dana 60 front axles are essential for serious rock crawling, while Truetrac helical LSDs deliver traction improvements without aggressive locking behavior for street and tow applications.

What is the difference between a locker and a limited-slip differential?

A locking differential forces both wheels to rotate together under all conditions, maximizing traction for extreme off-road use but feeling harsh on pavement. A limited-slip differential uses clutches or gears to bias torque toward the wheel with more grip while still allowing speed differentiation, making it better suited for street driving, towing, and track applications.

Will a differential upgrade affect my ABS or traction control?

Mechanical lockers can interfere with ABS and electronic traction control systems on modern vehicles. Check compatibility for your specific year and model before selecting a locker, and consult the manufacturer for any required ECU calibration or bypass procedures.

Shop differentials alongside install kits and matching ring-and-pinion gear sets in our differentials and components collection, and explore suspension and exhaust upgrades for your build.