Muir-Hill produced its 121 farm tractor model From 1972 Until 1983 in England with a Cab standard cabin. Talking dimensions and weight, this model weighs 10700 lbs or 4853 kg has 82 inches [208 cm] of width, 156 inches [396 cm] of length while maintaining a wheelbase of 75 inches [190 cm] the front tread is about 64 to 80 inches while the rear tread is 64 to 80 inches . This tractor can fit ag tires of 13.6/12x38 front and 13.6/12x38 back . This Muir-Hill 121 is powerd by a diesel engine it has 380 ci or 6.2 L 6 cylinders ,it can produce 120 hp or 89.5 kW at 2500 (rpm), and has a torque of 280 lb-ft or 379.7 Nm at 1600 (rpm) the fuel tank capacity is 48 gal or 181.7 L. This machine has 4x4 4WD wheel drive system,8 forward and 2 reverse transmission system.