Once its locked its solid weather your in reverse, decelerating or any thing else in that fact. Good thing is when you want an open diff to drive every day with out it been a dog around slow cornering you just unlock it
Its a very strong set up any 4x4 person will tell u there are good, and if any thing goes wrong parts a very easy to get you can actual buy every bit individually from your local arb store. the instructions actual have all the part numbers as well