The Whiteline Plus 4/91-5/01 BMW 3 Series 10mm Rear Spring Pad Lower Bushing - 14mm Height Increase is a performance-enhancing suspension component designed to improve the overall handling of your BMW 3 Series. This bushing is 10mm thick and provides a 14mm height increase, allowing for improved suspension travel and a reduction in body roll. The increased height also helps to reduce the risk of bottoming out while cornering. This bushing is constructed from high-grade polyurethane for superior durability and is designed to fit perfectly into the stock spring pad.