Audi R8 4S Facelift Pre-Preg Carbon Fibre Full Body Kit by FORMAudi R8 4S Facelift Pre Preg Carbon Fibre Full Body Kit by FORM When selecting the Replce OEM Wing Wing option you will be provided with Aluminium Wing Legs. When selecting the Flat Base Wing option you will be provided with Carbon Wing Legs. The Legs are different between the styles due to the strength and weight of each type. In the images of our black Audi R8, this is the long wing with flat base option. Height Measurements of the Wing Legs: Style