ReadyLIFT Heavy Duty Adjustable Rear Track Bar with Johnnie Joints for 0 to 4-Inch LiftAdjustable Design. The ReadyLIFT Heavy Duty Rear Adjustable Track Bar is designed as a heavy duty replacement for your factory rear track bar. Equipped with a turnbuckle this bar allows easy adjustment to tune into your Jeep's needs without the hassle of uninstalling it. This bar is designed to work on Jeeps with 0 4 inches of lift. Heavy Duty Construction. The ReadyLIFT heavy duty rear adjustable track bar is made from 1. 375 inch DOM tube and has