The CaseIH STX425 is a four-wheel drive (4WD) tractor produced from 2002 to 2006 as part of the Steiger STX Series. It features a powerful Cummins QSX 15 turbocharged aftercooled diesel engine with 425 hp, advanced transmission options including 16-speed full power shift and 24-speed fully synchronized Synchroshift, and robust mechanical and hydraulic systems. Built in Fargo, North Dakota, USA, the STX425 is designed for heavy-duty farming applications with a maximum capacity of 51000 lbs and a variety of features such as hydrostatic power steering, integrated hydraulic wet disc brakes, and a Surveyor Cab. It offers optional features like an independent rear PTO and high flow hydraulics, making it a versatile and reliable tractor in its class.