JKS Adjustable Front Track Bar 2007-2015 Jeep JK The track bar controls lateral movement of the axle housing. It is attached to the chassis and axle on opposite sides of the vehicle with flexible mounting points to accommodate suspension travel. Unfortunately, the fixed length of the OE track bar won't accommodate ride height adjustments. Changing the distance between mounting points forces the axle housing out of alignment with the rest of the vehicle. Unless corrected, this condition will place unnecessary stress on related suspension and steering components, create alignment problems, and prevent proper suspension & swaybar disconnect operation.