I went out with a friend this weekend to a place in Northern Virginia (Dumphries), the trails were pretty challenging, and there was a guy out there in a J@@p Cheroke. He had ARB air lockers. I heard a lot of hissing when he engaged them from a switch in the dash. I couldn't believe the stuff he made it through, he attributed his success to his ARB. I see alot on here about lockers, and I gotta be honest, I'm really new to the 4x4 world. Can anyone tell me what lockers do, how they work, any information about them? What are detroit lockers? they seemed to be a great mod to invest in. How much do they cost? How much work is involved in installing them? Thanks for any information, just trying to get educated. The only easy day was yesterday. Second place is a body bag.