The 4035 Series is available with or without a fully climate-controlled, all-weather cab. So bring on the rain, snow or blistering heat because nothing can stop you from working with an attitude. The 4035 Series is the largest tractor in the Bad Boy Tractor stable with 35hp. The eco-friendly “A” Series diesel engine sips fuel while providing maximum performance in speed, power and lifting up to 2,200 lbs.