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Diff locks

A locking differential, differential lock, diff lock, air locker or locker is a variation on the standard automotive differential. A locking differential provides increased traction compared to a standard, or “open” differential by restricting each of the two wheels on an axle to the same rotational speed without regard to available traction or differences in resistance seen at each wheel.

A diff lock is designed to overcome the chief limitation of a standard open differential by essentially “locking” both wheels on an axle together as if on a common shaft. This forces both wheels to turn in unison, regardless of the traction (or lack thereof) available to either wheel individually.

When the differential is unlocked (open differential), it allows each wheel to rotate at different speeds (such as when negotiating a turn), avoiding tire scuffing.

A diff lock forces both left and right wheels on the same axle to rotate at the same speed under nearly all circumstances, without regard to tractional differences seen at either wheel. A diff lock provides a significant traction advantage over an open differential, but only when the traction under each wheel differs significantly.

TJM 4×4 Equipped Pro Locker is the market leader when it comes to 4×4 Diff Locks. Manufactured from stronger materials and with a thicker bearing carrier than the factory differential it offers great peace of mind for any offroader. Each TJM 4×4 Equipped Pro Locker kit comes standard with new carrier bearings and heavy duty rubber leader hose – items our competitors call “options”. The TJM 4×4 Equipped Pro Locker is activated via a unique air operated piston style actuator that eliminates the possibility of oil being pumped out of the airline.

The TJM 4×4 Equipped Pro Locker is a patented design that has been proven to be superior through extensive competition and recreational use over the last 20 years and comes with a limited lifetime warranty. TJM 4×4 Megastores have trained technicians that can fit the TJM 4×4 Equipped Pro Locker to your vehicle. Contact one of TJM 4×4 Megastore staff today for more information!

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