03-07 4WD Cummins Adjustable Track Bar Kits #BDD-1032012 BD�s double coated Adjustable Track Bar is built from rigid 1 3/8� DOM (Drawn Over Mandrel) seamless heavy wall 0.313� tubing with formed and precision welded collars that have durable, heavy duty Poly bushings. With the OEM ball joint design, frequent maintenance is required to prevent side-to-side movement of the front axle which can cause wear, hammering, wandering and the dreaded �Death Wobble� - BD�s Adjustable Track Bar is the perfect solution for steering stability and is a great compliment to BD�s Steering Box Stabilizer (SBS). Plus, it is adjustable to accommodate up to 4� lifts!