During the 1970s, many of the tractors imported from Europe and Japan were equipped with front-wheel assist, but sales of U.S.-built tractors with front-wheel assist were limited. There was a big ...

The Model Year 2022 9 Series tractors span 200 hp and 12 models—six wheeled, three 2-track, and four 4-track models ranging from 390 to 640 hp. John Deere is the only manufacturer offering ...