BigBud Series 4 Big Bud series 4 tractors built from 1986 through 1990. Shop Category: Large tractors Base price: 260500 $, 342500 $ Power:370(370hp), 400(400hp), 440(440hp), 450(450hp), 500(500hp), 740(740hp). Fuel tank: 2082 liters, 2650 liters. Max. speed: 32 kph Colors: Original, Black, Desert, Silver, Olive, Engine color(740): Original, Black, Yellow, Desert, Rim color: Original, Black(all). Gears: 12 gears plus 2 reversible gear, 2 groups with 4 gears plus 1 reversible gear per group. Settings: Wheels, Accessories, Decals, Decors, License plate number. Animations: interior parts, door, bonnet, flag.