Motorcycle performance tends to rise in small increments. A few more horsepower here, a few more mph there. The exception is the legendary Vincent Black Shadow, a 125mph machine that stunned the motoring press in 1949. It would be 24 years before anyone figured out how to build a faster production bike—an honor that went to Kawasaki with the 1973 Z1. The exquisite Vincent shown here has the frame of a Black Shadow and a highly tuned motor from a 1949 Vincent Rapide. It was sold for £31,050 (US $50,000) by Bonhams in June 2011.
Image courtesy of Bonhams.