The Yamaha MF1 50 cc was Yamaha's answer to the rapidly growing Moped market. Like with the SC1 scooter, Yamaha wanted to make a sportier moped.
In mid 1963 Yamaha introduced the YG1, a very reliable small motorcycle that was going to be produced in very large numbers and sold everywhere in the world. When introduced in the USA, its price was only $ 430,00 POE Los Angeles.....!