Yamaha YSR50
 The Yamaha YSR50 was a miniature sport moped that was produced and sold by Yamaha during the late eighties and early nineties. The bike featured an air-cooled 50cc two-stroke engine. The engine was sometimes swapped out for a larger variety.Its first production year was 1987 and it was last made in 1992. American Motorcyclist magazine stated its top speed was 38 mph.