If you are lifting your Super Duty, or possibly already have a lift kit installed and want to improve the ride, tracking, overall strength, reliability, and performance of your truck, then you need a pair of ReadyLIFT Tubular Radius Arms. These radius arms are constructed of strong tubular steel, along with a built-in caster adjustment so you can correct your suspension geometry on 3.5-inch to 6-inch lifted models. The arms are formed inward allowing for additional clearance and providing even more space for oversized tires. Whether you are into off roading your truck or just daily driving and towing, upgrading to a set of heavy duty radius arms will ensure your suspension can take the abuse and your truck will track straight.