Supreme Suspensions Control Arms are the fastest and easiest way to optimize front axle alignment and prevent unwanted vibrations.Includes Complete Set of 2x Steel Tubular Uni-Ball Upper Control ArmsCAD/CAM engineered 4130 Chromoly Steel Construction.Precision Laser cut & CNC bent tubes with High-Quality Welds.Stainless Steel FK 1.25? PTFE-Lined Uni-Ball Bearings for added strength and maximum wheel travel.90° angled zerk fittings to easily grease the bushings during install or maintenance.High-Density Polyurethane Bushings for increased durability and sustainability On All Terrain.17-4PH Misalignmnet Adapters for extreme strength and greater range of motion.Added Protection due to our Proprietary 3-Stage Powder Coating.Designed to increase caster angle to provide steering stability and reduce darting or wandering on lifted applications.**AN ALIGNMENT IS REQUIRED AFTER INSTALLATION**Please check out our installation video: