You Say German Motorcycle, people automatically think BMW

But, BMW Motorad isn't what we're talking about here, this is about, Windhoff.

Windhoff motorcycles were built between 1924 and 1933 in Berlin.

There were a number of power plants including 750cc and 1000cc. Windhoff Motorcycles also had power plants with Overhead cams, side valves, flat twins and shaft drive. Mostly though the bikes were equipped with water-cooled Bekano two strokes.