This massive heavy duty forged rear adjustable trackbar is designed as the ultimate in rear end strength to eliminate any rear end shimmy or handling issues - this Monster trackbar is 230% stronger than the factory trackbar. This rear adjustable trackbar is required on lifts of 2.5" or more. The trackbar is designed to be used in conjunction with a Trackbar Bracket and helps to restore the trackbar to a natural position to keep the rear axle correctly centered under the vehicle using the fine thread adjustment.