TA Coilover Kit The ST Coilover Kit 97-03 BMW 525i/528i/530i/540i E39 Sedan w/o Factory Air Suspension - ST XTA Coilover Kit is a complete suspension kit designed for BMW E39 sedans that do not have factory air suspension. This kit includes adjustable height coilovers, a set of four shocks and struts, and all necessary hardware. The coilovers feature adjustable dampening and rebound settings, allowing drivers to customize their ride to their preferences. The shocks and struts are designed to improve handling and ride quality while providing a comfortable and controlled ride. This kit is perfect for those who want to improve their vehicle's performance and handling without sacrificing comfort.