18-Current Wrangler JL, 2 & 4 Door For use with stock height and up to 5.5" lift Precise centering of the rear axle after installation of a suspension lift High clearance design for full clearance throughout suspension cycle 4130 chromoly OE style rebuildable bushings Premium powder coat finish for maximum corrosion resistance The new Rubicon Express JL Wrangler rear adjustable track bar features a heat treated 4130 Chromoly steel construction designed to eliminate deflection caused by oversized tires or extreme side load.It replaces the stock rear track bar on 2 and 4-door Jeep Wrangler JL with stock height and up to 5.5-inches of lift. The rear track bar is adjustable in length and designed with a double bend specifically for the JL to give maximum clearance between suspension components.