SuperPro Lower and Upper Trailing Arm Kithis front and rear Lower and Upper trailing arm kit for the Jeep Wrangler JK is designed to correct the pinion angle on a lifted vehicle. Offering an adjustable solution, while improving both on and offroad performance. Designed as an upgrade and not just as a repair solution! Supplied as a complete kit and fully assembled with SuperPro bushings. We have developed this arm kit to be by far the best choice on the market. Fitted with SuperPro bushes,