To upgrade your lift to the Long Arm Version, Rough Country provides what you need. Included are front and rear upper and lower adjustable control arms, track bar bracket and all necessary hardware. The extreme travel long arms keep the optimum alignment providing maximum articulation. Massive flex joints with 2.5" diameter body and 1.25" threads. All joints are fully rebuildable and greasable. Upper joints pivot up to 20 degrees; lower joints pivot up to 35 degrees. Clevite brand OEM style rubber bushings.