It’s a common occurrence when driving off-road. You press the gas pedal only to see one of your drive wheels on each axle sitting motionless while the other spins. Is the axle broken? Hopefully not.

Locking differentials are a definite game changer when it comes to off-roading. They increase traction by forcing both tires on an axle to turn. But what is a locking differential? Car people will ...