Honda CB750 and CR750

Honda Dream CB750 Four, 1969 Honda's brief was that a four-cylinder engine with four mufflers should be the basis of the design, borrowing the look of its Grand Prix racers, and that row of pipes became the signature of the machine. The big front disc brake drew crowds at the Tokyo Motor Show as much as the engine did, and Honda bills it as the first motorcycle to offer disc brakes. It is the least exotic shape here and arguably the most imitated: the upright, across-the-frame four with a pipe for each cylinder became the look of the big Japanese motorcycle for years afterward.