BMW R 51/2 – 251/2 Specs: Engine Oil, Gap & Tire PSI

The BMW R 51/2 holds a unique position in motorcycling history as the first post-World War II horizontally-opposed twin-cylinder motorcycle produced by BMW. Emerging in…

The BMW R 51/2 holds a unique position in motorcycling history as the first post-World War II horizontally-opposed twin-cylinder motorcycle produced by BMW. Emerging in…