The Iseki SX55 is a utility tractor produced from 1985 to 1990 as part of the SX Series. It is powered by an Isuzu 2.8L 4-cylinder liquid-cooled diesel engine producing 50 hp (37.3 kW). The tractor features a 12-speed syncromesh or 24-speed creeper transmission, two- or four-wheel drive, power steering, and wet disc brakes. It has a four-post ROPS with canopy for operator safety. The hydraulic system delivers 9.25 gpm (35.0 lpm) pump flow, and the rear hitch is category II with position and draft control and a lift capacity of 5291 lbs (2399 kg). The rear PTO is independent with hydraulic wet disc clutch and operates at 540 or 1000 RPM. Dimensions include an 85 inch (215 cm) wheelbase, 140.2 inch (356 cm) length, and 74.2 inch (188 cm) height. The tractor weighs 3053 lbs (1384 kg) and rides on 8.3-20 front and 14.9-28 rear tires. Electrical system is 12 volts with negative ground. The SX55 was built in Japan and is related to the Iseki SX65 model.