Use this KW Coilover Kit V1 when you want to enhance the performance and appearance of your BMW 3 - series on the street. It's perfect for sporty drivers who love a balance of practicality and performance. The kit includes high - quality stainless - steel coilover struts, corrosion - resistant springs, bump stops, and dampers. Although specific size and weight details aren't given, you can expect a well - crafted and durable product that's been rigorously tested on the Nürburgring Nordschleife and in the KW 7 - post chassis dynamics test center.