The Challenger MT635B is a row-crop tractor produced from 2005 to 2008 as part of the MT600B Series by Challenger, a part of AGCO. Built in Beauvais, France, it features a powerful 215 hp Sisu 7.4L 6-cylinder turbocharged diesel engine and a TechStar continuously variable transmission (CVT). This four-wheel drive tractor includes advanced mechanical features such as inboard planetary final drives, electrohydraulic differential locks, and hydraulic wet disc brakes. It offers a spacious cab with heat and A/C, with optional pneumatic suspension and automatic climate control. The MT635B supports a variety of PTO speeds and has robust hydraulic and hitch capacities, making it suitable for demanding agricultural tasks.