AST Suspension Lowering Springs (40mm/30mm TUV) - 1998-2006 BMW 3 Series 320D/6CYL Coupe (E46)

The AST Suspension Lowering Springs for the 1998-2006 BMW 3 Series E46 are high-performance coil springs designed to improve handling and aesthetics by lowering the vehicle's ride height by 40mm front and 30mm rear. Constructed from premium high tensile chromium-silicone wire, these springs are handpicked for their quality and metal consistency. The manufacturing process includes cold winding, heat treatment to enhance hardness and reduce internal stresses, followed by shot peening, phosphate treatment, and powder coating to ensure durability and longevity. These springs feature progressive rates on most vehicles, providing a balance of comfort and performance, and are engineered to withstand the rigors of daily driving and spirited handling.

Designed specifically for the E46 chassis from 1998 to 2006, these springs are compatible with BMW 320D and 6-cylinder coupe models equipped with Electronic Damping Control (EDC). They serve as a direct replacement for stock springs, offering a lowered stance that enhances cornering and stability without compromising ride quality. Installation is straightforward as bolt-on components, and the springs are suitable for street use, track days, or aggressive driving. The kit includes the set of lowering springs, ensuring a complete upgrade for enthusiasts seeking improved handling and a sportier appearance.