BMW, which stands for Bayerische Motoren Werke, motorcycles are synonymous with flat-twins. The very first BMW motorcycle was the R32 in 1923.
BMW has not been actively involved in racing efforts in recent years, but has a long history of racing and record breaking. One of their most famous Early Riders was Ernst Henne, who set many speed records on streamlined, supercharged boxers in the 1930s. A BMW supercharged 500cc flat-twin, was rode by Schorsch Meier when he became the first foreign rider to win an Isle of Man TT in 1939 competing in the Senior class.