Kubota KB21X Specs, Price and Review (2026)
Lawn · 20.7 HP · Best for small farms and versatility
Power
20.7 HP (15 kW)
Fuel
Diesel
Transmission
Manual
PTO
18 HP @ 540 rpm
Weight
885 kg (1 t)
New price (est.)
$3,279 – $4,918
Est. used price
$984 – $3,197
Overview
As a lawn and garden tractor with 20.7 HP of power, the Kubota KB21X is built for mowing, property maintenance, and light attachments. As a Kubota tractor, the KB21X continues the brand's reputation for reliability and field performance. Below are the full KB21X specs: engine specifications, transmission details, PTO ratings, hydraulic system data, and dimensions — everything you need for a buying decision. The KB21X review data on this page is generated from specifications, helping you understand how it compares to similar tractors in its class. We include KB21X price estimates — both new and used — to help you understand the cost of ownership and compare it against alternatives. Use the comparison tool below to set the Kubota KB21X against similar models, or browse the alternatives section for other tractors in this HP range.
TractorFit™ Analysis
Overall score
Based on specs and use-case fit for Kubota KB21X.
With its specs, the low-horsepower segment ideal for mowing, landscaping, and small-acreage tasks. Manual transmission is a proven choice for operators who prefer direct gear selection. As a lawn and garden tractor, it targets mowing, light loader work, and property upkeep. Rear PTO capability allows use of mowers, tillers, and other PTO-driven equipment. Key specs include 20.7 HP, 18 HP PTO, 1 t operating weight, estimated used range $984–$3,197, and overall suitability 55/100.
Higher = simpler
Pros
- ✓Simple maintenance; mechanical transmission with lower repair costs.
- ✓High versatility: PTO and hydraulic options for multiple implements.
- ✓Strong value for money relative to power and features.
- ✓Adequate power for light duties and use in tight spaces.
- ✓Reliable manual transmission with low maintenance cost.
Cons
- •Limited power for large-scale work or heavy equipment.
- •Limited capacity for intensive loader work.
- •Modest power-to-weight ratio; less agility in traction and on slopes.
- •Basic hydraulic system; limited for demanding implements.
Kubota KB21X receives an overall suitability score of 55/100 from the TractorSuitability™ Engine. Ideal for small to mid-size farms (roughly 5–40 ha), light fieldwork, mowing, and properties where maneuverability matters, mixed use with multiple PTO and hydraulic implements, tight spaces and transport on smaller trailers. The suitability sub-scores allow an objective comparison of performance across farm sizes and use types. With 20.7 HP and around 1 tons weight, it fits small and mid-size farms where maneuverability and running costs matter. Loader work rates 12/100; fuel efficiency index is 69/100. Maintenance is classified as Low: Mechanical transmission and straightforward engine design; lower repair costs and easier DIY or general dealer servicing. Operating cost tier is Low: Good fuel efficiency, strong value tier, and low maintenance complexity keep operating costs down. Versatility (72/100) reflects PTO and hydraulic options; cost tier (100/100) reflects value for money. It stands out in: value. It has relative limitations in: large farm, loader. Overall, it offers a balanced profile for its class. The TractorSuitability™ Engine uses manufacturer technical data only to compute these indices in an objective, reproducible way. We recommend comparing these scores with your specific acreage, crop type, and implement needs before deciding.
Real-world performance & ownership
Highlights
- Low horsepower keeps fuel use and noise down.
- Manual transmission keeps design simple and ownership costs lower.
- Operating weight around 1 t aids maneuverability and transport.
- Rated PTO output of 18 HP supports mowers, hay tools, and other driven implements.
- Suitability profile is solid across typical use cases.
- Versatility index supports a wide range of tasks and attachments.
- Estimated used price range: $984–$3,197 USD.
- Lawn and garden focus favors mowing and property maintenance.
Trade-offs
- Suitability scoring suggests above-average maintenance demands; consider repair history and local support.
- Loader suitability scores modestly; check front axle capacity and loader compatibility for heavy material work.
Best for
- Residential mowing
- Small property upkeep
- Light towing
- Mixed tasks and attachment use
Not ideal for
- Heavy, continuous loader work
- Low-maintenance-first buyers
- Large-acreage row-crop or heavy tillage
Kubota KB21X — Pros and Cons
Pros
- Low horsepower keeps fuel use and noise down.
- Manual transmission keeps design simple and ownership costs lower.
- Operating weight around 1 t aids maneuverability and transport.
- Rated PTO output of 18 HP supports mowers, hay tools, and other driven implements.
- Suitability profile is solid across typical use cases.
- Versatility index supports a wide range of tasks and attachments.
- Estimated used price range: $984–$3,197 USD.
- Lawn and garden focus favors mowing and property maintenance.
Cons
- Suitability scoring suggests above-average maintenance demands; consider repair history and local support.
- Loader suitability scores modestly; check front axle capacity and loader compatibility for heavy material work.
Used market insights
Estimated used price
$984 – $3,197 USD
High confidence
Estimate only. Actual prices vary by condition, hours, and region.
Buyer checklist
- Verify mower deck or attachment compatibility and condition.
- Check for oil leaks and transmission operation; HST repairs are costly.
- Confirm tire condition and that the machine fits your storage and access.
For used Kubota KB21X, check hours and blade deck condition. Verify PTO and transmission operation, and that attachments match.
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Kubota KB21X Videos
Community Discussions
Technical Specifications
What this means: Smaller engines favor residential use; check oil capacity and service intervals for your usage.
Engine
- Maximum Power (Gross)
- 20.7 HP (15 kW)
- Fuel Type
- Diesel
- Cooling
- Liquid
Documentation & Resources
Compare with similar models
Better Alternatives
Frequently asked questions
What is the Kubota KB21X best used for?
As a lawn tractor, the Kubota KB21X is best for mowing, light loader work, and property maintenance.
What type of transmission does the Kubota KB21X have?
The Kubota KB21X uses a manual transmission.
What should I check when buying a used Kubota KB21X?
Verify hours, condition, service history, PTO operation, hydraulics, and tire wear. Confirm weight and dimensions if you need to transport or match implements.
What fuel does the Kubota KB21X use?
The Kubota KB21X uses diesel fuel.
What is the weight of the Kubota KB21X?
Operating weight is approximately 885 kg (1 tons).
Where can I find used Kubota KB21X listings?
This page links to international marketplaces where you can search for used Kubota KB21X tractors; listings are provided by third parties.
How much does a used Kubota KB21X cost?
Used Kubota KB21X tractors are often listed in the range of $984–$3,197 USD (high confidence). Actual prices depend on hours, condition, and region.
Does the Kubota KB21X have a PTO?
Yes. The Kubota KB21X has a rear PTO rated at 18 HP at 540 rpm.
What is the horsepower of the Kubota KB21X?
The Kubota KB21X is rated at 20.7 HP (gross) (15 kW).
Is the Kubota KB21X good for loader work?
TractorFit scores rate this model as less suited for loader work (12/100). Check front axle capacity and loader compatibility for your intended use.
Kubota KB21X: Complete Tractor Specifications and Technical Data
Overview
The Kubota KB21X is a lawn tractor from Kubota designed for landscaping and property maintenance. This comprehensive tractor specifications guide provides complete technical data, engine specifications, transmission details, dimensions, and hydraulic system capabilities. This lawn tractor features a 20.7 HP diesel engine with manual transmission, delivering reliable performance. Our tractor database provides detailed specifications and technical data for the Kubota KB21X, making it easy to compare with other models in the Kubota lineup or across different brands.
Engine Specifications
The Kubota KB21X is powered by a diesel engine that delivers 20.7 HP for property maintenance. Tractor horsepower is a critical specification that determines the machine's ability to handle various implements. The engine specifications demonstrate Kubota's engineering expertise in creating efficient powerplants.
- Maximum Power: 20.7 HP (15 kW)
- Fuel Type: Diesel
- Cooling System: Liquid-cooled
Transmission Specifications
The Kubota KB21X features a manual transmission system. Transmission type affects power delivery and operational efficiency. Different transmission types offer various advantages for different operating conditions and implement requirements.
Dimensions and Weight
Understanding tractor dimensions and weight is essential for storage, transport, and operational compatibility. The Kubota KB21X's specifications help determine if the tractor fits your operational requirements.
- Wheelbase: 1364 mm (53.7 in)
- Weight: 885 kg (1951 lbs)
Power Take-Off (PTO)
The PTO system allows the tractor to transfer engine power to driven implements. PTO specifications, including horsepower and speed ratings, are essential when selecting implements.
- PTO Speed: 540 rpm
- PTO Power: 18 HP (13 kW)
Performance and Applications
The Kubota KB21X delivers 20.7 HP performance for landscaping and property maintenance tasks. Tractor performance metrics, including power output, hydraulic capabilities, and dimensions, determine the machine's suitability for various tasks. When evaluating tractor performance, consider your specific application requirements, operating conditions, and implement needs to ensure the Kubota KB21X matches your operational demands.
Technical Data Summary
This guide provides complete technical data and detailed specifications for the Kubota KB21X. Key specifications include: 20.7 HP engine, manual transmission, 18 HP PTO, and 885 kg weight. These tractor specifications enable accurate comparisons with other models. Our tractor database provides comprehensive data for thousands of models, making it easy to research specifications and compare tractors.
Conclusion
The Kubota KB21X is a versatile lawn tractor from Kubota, designed for property maintenance. With its 20.7 HP diesel engine and manual transmission, weighing 1 tons, it provides efficient operation for landscaping work. This comprehensive guide offers all essential Kubota KB21X tractor data and specifications for informed decision-making.
Conclusion
With 20.7 HP, the Kubota KB21X is a solid choice for operators who need Residential mowing, Small property upkeep, Light towing. Check the price range shown above and compare with similar models to ensure it fits your budget. Use our comparison tool to stack the KB21X against other tractors in the same HP range before making a final decision.