The NSU Delphin III streamliner motorcycle set the motorcycle land speed record in 1956.

Wilhelm Herz rode the machine to 211.4 miles per hour (340.2 km/h) at Bonneville Speedway in Utah, to break 200 mph (320 km/h) for the first time.

[5] Its fairing, designed in a wind tunnel at University of Stuttgart (then Stuttgart Technical College), gave it a drag coefficient of 0.19.

[1] The same engine powered Herz to a 1951 world speed record, with a less efficient frame/fairing, the Delphin I.

[3] The engine used an unusual rotary supercharger related to NSU's eventual development of the Wankel engine.