This machine was a luxury version of the YD2, with a nice large fuel tank (with for the first time the tuning fork logo), larger hubs and an engine which developed 1 hp more. But the mid-1960s suddenly turned Japanese motorcycle cottage industries into international powerhouses with names that would turn "Japanese" from a slur, synonymous with cheap dinnerware, into a virtue. The biggest, of course, was Honda. But following closely on its heels was Yamaha.