The Kubota B1121 is a sub-compact utility tractor introduced in 2018 as part of Kubota's B1 Series. It features a 0.5L 2-cylinder liquid-cooled diesel engine producing 10.7 hp (8.0 kW) net power. The tractor has a 6-speed gear transmission with 6 forward and 2 reverse gears, four-wheel drive, mechanical rear differential lock, manual steering, and wet disc brakes. It offers a two-post folding ROPS with an option to be without ROPS. The fuel tank capacity is 3.7 gallons (14.0 L). The tractor's dimensions include a 50-inch wheelbase, 92.9 inches length, 36.9 inches width, and 87.3 inches height with ROPS. It weighs 1323 lbs (600 kg) and has ground clearance of 9.5 inches (24 cm). Standard tires are 5-12 front and 8-16 rear. The hydraulic pump flow is 2.1 gpm (7.9 lpm). The rear tractor hitch is type I with a lift capacity of 948 lbs (430 kg). The rear PTO operates at 540 rpm. Electrical system is 12 volts with negative ground and alternator charging. The B1121 supports front-end loader attachments such as the LA213 Loader with various lift and breakout capacities and dimensions. It is related to the Kubota B1161 model.