Here is everything you need to know about these. Prosport 35mm Lowering Springs: 1 Series 3-door E81. Made from silicon-chrome steel to ensure long life. Red powder coat finish on the springs. Progressively wound springs for the best balance between firmness and comfort. Improved roadholding and more controlled body roll. 116i / 118i / 118d / 120i / 120d / 123d / 125i / 130i. Will fit M-Sport models or cars fitted with M-Technic or Sport Suspension – the lowering amount may be less than shown below as these models are already lowered in their standard specification. These Prosport Lowering Springs are designed to fit on to the standard (OEM) top mounts and/or spring seats. Not suitable for cars with self-levelling system or electronic damper control. Designed and tested for an exact fit and consistent performance. Every spring is performance-tested and measured at the factory before dispatch. TUV Quality Certificate Number: BM046. Prosport is a UK-based company, run by its owners, who are undeniably car enthusiasts with a long track record in the automotive tuning business. Every Prosport product is manufactured to the same exacting standards, under the stringent requirements of TUV quality control, with the result that you can be sure your Prosport product is reliable and safe. We are particularly proud of the reliability rate of Prosport products, which we fully expect to give you great service in the long run. Finally, you can be sure that should you ever need any replacement parts, we will always try to help. There’s nothing worse than being told “no, we only sell complete kits” even though you only need one item. Front Progressively wound Prosport Lowering Springs x2. Rear Progressively wound Prosport Lowering Springs x2.