Upgrade your Silverado or Sierra 1500 with a set of Rough Country forged aluminum control arms that feature POM ball joints for greater range of motion and easier installation. These ball joints include a Polyoxymethylene ball race with an extremely low coefficient of friction for longer life. The larger diameter of the ball improves range of motion and is maintenance free. The 1-piece design of these control arms provide superior strength and durability and will out-perform any other type of control arm on the market. Since there's no welding weak spots, they can't bend or break. Also included are Clevite OE style rubber bushings for a long and durable lifespan. View installation instructions</strong