The rear axle experiences tremendous amounts of lateral force while driving and those effects increase exponentially during off-road driving. The TeraFlex TJ: Rear HD Adjustable Track Bar withstands these abusive side loads to dramatically improve handling. Track Bars also allow lateral adjustment of the axle for proper axle alignment as well as cycling through full suspension travel without interfering with other components. Our rear track bar also maximizes rear right spring clearance. The TJ: Rear HD Adjustable Track Bar’s ability to rotate allows for more wheel droop, while reducing track bar binding during suspension travel. Uses a zerk fitting for easy greasing. A must for anyone who takes their rig off road!