Challenger produced its MT855B farm tractor model From 2005 Until 2008 in United states with a Cab standard cabin. Talking dimensions and weight, this model has 140.9 inches [357 cm] of width, 265.9 inches [675 cm] of length and 138.1 inches [350 cm] of height while maintaining a wheelbase of 118 inches [299 cm] and a ground clearance of 14.4 inches [36 cm]. This tractor can fit ag tires of tracks front and tracks back . This Challenger MT855B is powerd by a diesel engine it has 928 ci or 15.2 L 6 cylinders 24 valves ,it can produce 460 hp or 343.0 kW at 2100 (rpm), and has a torque of 1423 lb-ft or 1929.6 Nm at 1300 (rpm) the fuel tank capacity is 305 gal or 1154.4 L. This machine has crawler wheel drive system,16 forward and 4 reverse Cat Powershift transmission system.