The largest tractor in the Bad Boy Tractor stable is the 35hp 4035 Series thoroughbred available with or without a fully climate-controlled, all-weather cab. With our Hydro Max transmission, you no longer have to pre-set an engine throttle position. The engine RPM automatically increases or decreases as you move the forward/reverse foot pedals. Hydro Max is quiet, smooth, easy and eco-smart. The tractor is easy to maintain, with easy access to all serviceable parts and the eco-friendly "A" Series diesel engine sips fuel while providing maximum performance in speed, power and lifting.