Kubota KB21X Tractor Specifications & Overview
Overview
The Kubota KB21X is a sub-compact utility tractor from the KB Kingbull Extra Series, produced between 2009 and 2014 for the Japanese domestic market.
Positioned above the KB19X and below the KB23X, the KB21X delivers higher engine output and improved work capacity while retaining compact dimensions suitable for orchards, greenhouses, and small farms.
With four-wheel drive, power steering, and the option of an enclosed cab with air-conditioning, the KB21X is a versatile and export-friendly model valued for durability, comfort, and ease of maintenance.
Engine
| Item | Specification |
|---|---|
| Manufacturer | Kubota |
| Engine type | Diesel |
| Cylinders | 3-cylinder |
| Displacement | 1.1 L |
| Rated power | 20.7 hp (15.4 kW) |
| Cooling system | Liquid-cooled |
| Fuel system | Mechanical diesel |
| Fuel tank (ROPS) | 7.1 gal (26.9 L) |
| Fuel tank (Cab) | 5.6 gal (21.2 L) |
The 1.1-liter Kubota diesel engine provides strong low-RPM torque, excellent fuel efficiency, and long service life in demanding agricultural conditions.
Transmission
| Item | Specification |
|---|---|
| Transmission options | 9-speed / 36-speed power shift |
| Drive system | Four-wheel drive (4WD) |
| Steering | Power steering |
Multiple gear ranges allow precise speed control for PTO work, cultivation, and transport tasks.
Power & Mechanical
| Item | Specification |
|---|---|
| Engine output | 20.7 hp |
| Brakes | Mechanical wet disc brakes |
| ROPS | Two-post ROPS |
| Cab | Optional, with air-conditioning |
| Hitch category | Rear Type 0 |
Power Take-Off (PTO)
| Item | Specification |
|---|---|
| PTO type | Rear PTO |
| PTO speed | 540 rpm |
| PTO shaft size | 1.375 in |
| PTO engine speeds | 530 / 799 / 1182 / −662 @ 2600 rpm |
Supports a wide range of compact implements including rotary tillers, mowers, sprayers, and small trailers.
Dimensions & Tires
| Item | Specification |
|---|---|
| Wheelbase (ROPS) | 53.2 in (135 cm) |
| Wheelbase (Cab) | 53.7 in (136 cm) |
| Operating weight | 1,554 – 1,951 lbs |
| Front tires | 6.00-12 |
| Rear tires | 9.5-20 |
The heavier chassis and larger rear tires improve traction and stability during PTO-intensive operations.
Electrical System
| Item | Specification |
|---|---|
| Ground | Negative |
| Battery voltage | 12 V |
Variants
| Model | Description |
|---|---|
| KB21X | Wheeled tractor |
| KB21X-PC | Half-track version |
Photos
Official catalog photos of the Kubota KB21X are limited.
EVERY FARM TRACTOR can provide actual stock photos, inspection images, and export-ready documentation when units are available.
If you are looking for KUBOTA TRACTOR, please check our stock lists.
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