The Eibach Pro-Street Spring Kit enhances BMW M3 handling with a lowered stance. Crafted from high-tensile steel, this set of four springs lowers the sedan by ~1.0-1.5 inches, improving cornering and aesthetics. Designed for M3 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.