HGK Racing - E90 SideskirtsCarbon gives strength and kevlar material provides flexibility. It will save you a lot of time in case of front end potential damage during competition weekend. Estimate weight Fiberglass 1,20kg, Carbon Fiber [Carbon Kevlar] 1,00kg; All parts are for TRACK AND RACE CARS only (not exhibition), adjustments will be required at fitting. Please note that there may be occasional small imperfections, such as small cracks, scratches and or slight size