This comparison evaluates the Kubota Z421KW-54 and John Deere X580, both classified as Lawn tractors. We analyze horsepower ratings (gross and PTO), operating weight, hydraulic flow capacity, 3-point hitch lift capacity, transmission type, warranty coverage, and typical pricing signals. Both models serve similar use cases, so differences in specific specs may influence your decision based on property size, planned implements, and budget. Specs are compiled from manufacturer literature and dealer listings when available, and we update records as sources are verified.
| Specification | Kubota Z421KW-54 | John Deere X580 |
|---|---|---|
| Engine & Power | ||
| Gross Horsepower | 21 HP | 24 HP |
| PTO Horsepower | 16.2 HP | 17.55 HP |
| Engine Manufacturer | Kubota | Kawasaki |
| Cylinders | 2 | 2 |
| Displacement | 0.675 L | 0.726 L |
| Fuel Type | Diesel | Gasoline |
| Drivetrain & Transmission | ||
| Transmission Type | Dual Hydrostatic Zero-Turn | Hydrostatic |
| Drive Type | 2WD | 2WD |
| Forward Speeds | Variable | 999 |
| Reverse Speeds | Variable | 999 |
| PTO & Hydraulics | ||
The John Deere X580 delivers 24 HP compared to 21 HP on the Kubota Z421KW-54, providing more power for demanding tasks. It also weighs 636 lbs vs 880 lbs.
The Kubota Z421KW-54 is specifically designed for mowing as a lawn tractor.
Both models can be equipped with front loaders if compatible. Verify loader availability and lift capacity specs with your local dealer, as configurations vary.
The Kubota Z421KW-54 offers a 4-year powertrain warranty, while the John Deere X580 offers 2 years. Always verify current warranty terms with your dealer, as coverage can vary.
| PTO Type |
| Electric PTO |
| Independent PTO |
| PTO Speed | 540 | 540 |
| Hydraulic Flow | 16.8 GPM | — |
| Hydraulic Pressure | 2,800 PSI | — |
| Remote Valves | 1 | 0 |
| Dimensions & Weight |
| Operating Weight | 880 lbs | 636 lbs |
| Length | 78 in | 73 in |
| Width | 66 in | 54 in |
| Height | 45 in | 45 in |
| Wheelbase | 50 in | 51.2 in |
| Ground Clearance | 3 in | 3 in |
| Hitch / Implements |
| 3-Point Category | — | Category 0 |
| Lift Capacity | — | 600 lbs |
| Loader Compatibility | false | false |
| Warranty & Ownership |
| Powertrain Warranty | 4 years | 2 years |
| Bumper-to-Bumper | 3 years | 4 years |
| Pricing Signals | ||
| Typical Price | $8,500 | $4,500 |
| MSRP Min | $7,999 | $3,800 |
| MSRP Max | $9,499 | $5,200 |
Before purchasing, verify dealer pricing and availability in your area, confirm current warranty terms, test-drive if possible, and assess which implements or attachments you'll need. Both specs and pricing can vary by region and dealer.