The Challenger MT425B is a utility tractor produced from 2004 to 2010 as part of the MT400B Series. It is built in Beauvais, France and is similar to the Massey Ferguson 5435. It features a Caterpillar 4.4L 4-cylinder diesel engine, alternatively branded as Perkins 1104C depending on market, producing 75 hp. The tractor offers a 16-speed Autopower IV four speed power shift transmission with wet disc clutch, and is available in two- or four-wheel drive configurations with power steering and hydraulic wet disc brakes. The rear hitch is category II and the PTO offers 540/1000 rpm options. Weights range from 8885 lbs for 2WD to 9515 lbs for 4WD. Tires vary by drive type with 7.50-16 or 14.9R24 front tires and 18.4R34 rear tires. Electrical system is 12 volts with negative ground.