The Zetor Proxima 6421 is a farm tractor produced from 2004 to 2007 as part of the Proxima Series. It features a 4.2L 4-cylinder turbocharged diesel engine producing 64 hp, with options for 2WD or 4WD variants. The tractor offers a choice of 10-speed syncromesh or 12-speed mechanical shuttle transmissions. It has a wheelbase of 90 inches, weighs 7240 lbs, and includes features such as two-post folding ROPS with optional air-conditioning cab. Hydraulics are open center with 2900 psi pressure and 3 valves. The tractor supports rear PTO with independent 540/1000 rpm options and a rear hitch with position and draft control. Attachments include front-end loaders like the 102H, 102SLX, and 112SLX models with various lift and breakout capacities.