Yamaha Motor’s first off-road model, the DT-1 made its debut at a Yamaha dealer meeting in the U.S. in October 1967, and would go on to become a huge hit. Pioneering Bikes for the Dirt “Off-road Mania” Ch. II – Birth of the DT-1 https://global.yamaha-motor.com/showroom/offroadmania/ch2/