Subscribe to a magazine

Sierra Performance Series

Back to article View Gallery
4 of 16
For seamless all-around use, the Eaton/Detroit TrueTrac works very well. It's a helical gear limited slip that doesn't wear out and will just about lock up completely when preloaded a bit by applying the brakes. Mount Logan Off-Road installed 4.10 Sierra gears in the XJ's reverse Dana 30 frontend.