What is Limited Slip and what is a Locker?
Limited Slip (LS) is a traction aiding device that is in the rear differential. The stock LS is called Trac-Lock. It is an option only for the rear axle. What it does is keeps one wheel from spinning while the other sits still. It uses friction plates to reduce the difference between the 2 axle shafts, and does so automatically. But as the name implies, there is still some slip that occurs. It is considered better than an open differential (no traction assist device), but not as good as a locker. Like a limited slip, a locker is a traction assist device that is in the differential. There is no factory locker available from Jeep except for the 2003 Rubicon (air activated). A locker “locks” both axle shafts together, forcing both wheels to spin at the same speed. There are 2 types of lockers, automatic and manual. The automatic ones are just that, when wheel slip is noticed, it automatically locks both axle shafts together and unlocks when not needed (as in turning). For manual lockers,
