A differential locker of any type will increase your off-road traction dramatically by forcing both wheels of an axle to turn at the same speed. A standard, unlocked differential, works well on the street but only sends power to the wheel with the least amount of traction, thus making it ineffective off-road. Upgrading your existing open or limited slip differential to a selectable locker will not only improve the off-road capabilities of your vehicle, it will make it safer to drive while still retaining the factory on-road handling characteristics of an open differential.
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