Invoking the feeling of motion, the Dinan side skirts for the G8x M3/M4 take the factory runners and add a touch of attitude that enhance select body lines wcourtesy of the rear flares. Together, when matched with the Dinan front lip and rear diffuser/splitters the side skirts create a continuous and fluid carbon fiber cosmetic solution around the entirety of the vehicle. Carbon Fiber - G80/G82/G83