The Side Skirts are supplied with all the necessary mounting hardware and can be installed in minutes. This product was developed on our own in-house vehicle and subjected to extensive testing on both the race track and public roads. The RSC BMW M3 Side Skirt is constructed of 100% Pre-Preg Carbon Fiber and cured in a state of the art Autoclave. This provides a strong and lightweight part with a beautiful weave quality and a consistent weight. Additionally, the part is also applied with a clear coat that has UV inhibitors to prevent yellowing and allow you to polish the part back to a scratch free finish.