Solid pinion spacers are one of the most common upgrades we recommend when rebuilding a differential. Replacing the factory crush sleeve with a solid pinion spacer can improve preload stability...

Bearings play a critical role in the strength, durability, and lifespan of a differential. Inside every diff assembly, bearings support rotating components such as the pinion gear and differential carrier....

A diff locker that won’t engage can be frustrating, especially when you need it most in off-road conditions. Whether your vehicle is fitted with an air locker, electronic locker (E-Locker),...

If you’re building a 4WD for serious off-road use, one of the biggest decisions you’ll make is whether to run an air locker (e.g. ARB Air Locker) or an electronic...

Mechanical lockers, often referred to as auto lockers or lunch-box lockers, are a type of differential locker that engage automatically when torque is applied to the drivetrain. Unlike air lockers...

Air lockers are one of the most popular types of selectable diff lockers used in off-road vehicles. Unlike automatic lockers that engage on their own, air lockers allow the driver...

Electronic diff lockers, commonly referred to as E-Lockers, are a type of selectable locking differential that use an electrical actuator to lock the differential when required. Like air lockers, E-Lockers...

Diff lockers are designed to provide maximum traction by locking both wheels on an axle together. Unlike open diffs or limited slip diffs, which allow some difference in wheel speed,...

Helical limited slip differentials (LSDs) are one of the most popular modern differential upgrades for both street and performance vehicles. Unlike traditional clutch-type LSDs, helical LSDs use a series of...

Ramp rider limited slip differentials are one of the most common LSD designs used in motorsport and performance vehicles. They are particularly popular in drifting, circuit racing, and high-performance street...

A Positraction LSD, often referred to simply as a “Posi”, is one of the most well-known types of clutch-type limited slip differentials. The design became widely known through American performance...

Clutch-type limited slip differentials are one of the most widely used LSD designs in performance vehicles, motorsport applications, and some factory drivetrain setups. These differentials use friction plates inside the...

A limited slip differential (LSD) is designed to improve traction by limiting the difference in speed between the two drive wheels. Unlike an open differential, which sends power to the...

Most vehicles come from the factory with an open differential, which works well for normal road driving. However, many performance vehicles and 4WDs benefit from upgrading to a limited slip...

Your vehicle’s differential is a critical part of the drivetrain. It allows the wheels to rotate at different speeds when cornering while transferring power from the driveshaft to the wheels....

The differential is a critical component in a vehicle’s drivetrain that allows the wheels to rotate at different speeds while still being driven by the engine. Although most drivers never...