Year: 1939
Drivers e.g.: Hans Bock, Endre Kozma, Piet Knijnenburg, Rody Rodenberg
Engine type: Flat-twin, OHV
Cylinders: 2
Displacement: 494 cc
Power output: 27 kW / 36 PS hp at 7 000 rpm
Top speed: 175 km/h

In 1939, BMW produced a small series of 17 racing machines based on the BMW R 51. The engine of the R 51 RS (RennSport) delivers 36 horsepower, enough for a top speed of 180 km/h. These machines are not sold openly but rather made available to promising newcomers in various countries. BMW supports motorsport's up-and-coming talents this way, and the company is rewarded with countless successes both domestically and internationally.