NSU Sportmax streamlined motorcycle, 250 cc class winner in the 1955 Grand Prix season Within the fifties, streamlining started to Perform an ever-increasing aspect in the development of racing motorcycles along with the "dustbin fairing" held out the possibility of radical changes to motorcycle design. * Necessary subject. The info https://groups.google.com/g/motogiabao/c/GuVcwlW5koQ