Carli suspension systems use an adjustable track bar up front and the combination of an adjustable track bar and riser in the rear to correct geometry, center the axles after lifting the JK, and ensure the axle have as little “Yaw,” lateral axle movement causing a wagging feeling during suspension cycling, as possible. Carli adjustable track bars are constructed from ¼-inch wall DOM tubing and use 7/8-inch heat-treated chromoly FK Bearings Heim joints locked in by Carli’s proprietary Jammit nut that provides 100% more surface area than a standard jam-nut. The fixed end of Carli adjustable track bars features our proprietary CUB joint which uses a proven FK Bearings 7/8-inch uniball at its center. Custom molded bushings are pressed on to encapsulate the uniball then the assembly is pressed into the huge, gusseted housing of the track bar with a stainless safety washer and retained with a snap ring.