The Eibach Sportline Lowering Spring Kit improves BMW 320i performance with an aggressive stance. Made from high-tensile steel, this set of four springs lowers the sedan by ~1.8 inches, enhancing cornering and aesthetics. Designed for 320i models, it offers progressive rates for a track-ready ride. Installation requires compatible shocks and alignment. Powder-coated for durability, it includes a limited lifetime manufacturer warranty.