You push a truck hard enough – even a heavy duty model – and something’s going to give. When mechanic Dave Adair cracked the diff locker on his 2007 Chevy 2500 HD, he decided to step up to something ...

Locking differentials are a type of differential used in vehicles to improve traction and handling, especially in off-road or challenging terrain conditions. The purpose of a locking differential is ...

Installing a locking differential into your 4x4 is one of the best upgrades you can do. Understanding that a locker is what allows your wheels to spin at the same speed (no more one-wheel-peel), ...

Without the help of a differential lock, power can only be transmitted to two wheels at any time. Air lockers are replacement differential carriers that can lock the rear and front axle shafts ...

There are lockers and knockers, limited slips and Sure Grips. Sometimes they're called Positractions and sometimes much worse. But this name game is really about the concept of pushing equal measures ...

You've already heard why four-wheeling without locking diffs is really two-wheeling, or in some cases, one-wheeling. The question is, what to do about it. The answers depend on what you drive, how ...

Let's start off by understanding how a simple "open" differential works. The sequence of power distribution to the wheels starts from the pinion gear, which sends torque from the driveshaft to ...