AST 90 99 BMW 8 Series 840Ci (E31) Lowering Springs Joan Collins Plastic Surgery, Before and After Facelift, Botox Pictures. The AST Lowering springs offer a solution to reduce your vehicles center of gravity while preserving the comfort youre accustomed to from the original equipment manufacturer (OEM) springs. These springs serve as a direct replacement for your OEM springs and have been developed especially for each vehicle specific. Crafted from premium materials using the best Wafios coiling machines. Their progressive design strikes the perfect balance between lowering your ride and enhancing performance. With a broad range of applications, spanning over 3000 different vehicle models from 1966 to the 2023 day, you can trust these springs to suit your needs. Plus, these springs come backed by a lifetime warranty against breaking, ensuring your peace of mind as you hit the road. This Part Fits: Year Make Model Submodel 1993 1997 BMW 850Ci Base