Kubota F3990 vs Roper lawn tractors L121
Side-by-side specs comparison
Verdict by the numbers
- The Kubota F3990 is more powerful than the Roper lawn tractors L121: 39 HP versus 11 HP (+28 HP, +255%).
- The Kubota F3990 is the more recent model: production started in 2014, versus 1979 for the Roper lawn tractors L121.
- The Kubota F3990 is heavier: 778 kg versus 178 kg for the Roper lawn tractors L121.
- The Kubota F3990 has the wider mower deck: 60" versus 36".
Full specs comparison
| Kubota F3990 | Roper lawn tractors L121 | |
|---|---|---|
| Power | 39 HP | 11 HP |
| Production years | 2014–2024 | 1979–1981 |
| Fuel | Diesel | Gasoline |
| Cylinders | 4 | — |
| Weight | 778 kg | 178 kg |
| Drive | 4WD | 2WD |
| Transmission | Hydrostatic | — |
| Gears (fwd/rev) | — | 3 / 1 |
| Wheelbase | 130 cm | 110 cm |
| Length | 251 cm | 160 cm |
| Mower deck | 60" | 36" |
Frequently asked questions
Which is more powerful, the Kubota F3990 or the Roper lawn tractors L121?
The Kubota F3990 is more powerful than the Roper lawn tractors L121: 39 HP versus 11 HP (+28 HP, +255%).
Which is more recent, the Kubota F3990 or the Roper lawn tractors L121?
The Kubota F3990 is the more recent model: production started in 2014, versus 1979 for the Roper lawn tractors L121.
Which is heavier, the Kubota F3990 or the Roper lawn tractors L121?
The Kubota F3990 is heavier: 778 kg versus 178 kg for the Roper lawn tractors L121.
Which has the wider mower deck, the Kubota F3990 or the Roper lawn tractors L121?
The Kubota F3990 has the wider mower deck: 60" versus 36".