Compare Mowers
List prices are the manufacturer’s published figures, re-checked daily; they exclude tax, freight and dealer setup.
A side-by-side reference of each model's stated specifications. MowerFacts doesn’t give opinions: where a published, spec-derived rule can separate machines we mark a Data Pick and show the rule; here, read the values and decide what fits your needs.
Best suited for
What each model is built for, from its duty class and key specs. This is a neutral reference — MowerFacts does not rank one model above another.
- Kubota GR2120 — commercial: daily paid use and high acreage; 48-inch deck
- Kubota T2290KWNC-42 — commercial: daily paid use and high acreage; 42-inch deck; gas powered
What’s different? The 5 differences that matter most, from the published figures.
- GR2120 uses a Kubota D782 engine; T2290KWNC-42 uses a Kawasaki FR651V engine. The engine maker builds the engine; the mower maker chooses the model, rating and fit, so the badge alone does not settle output or longevity.
- GR2120 weighs 968 lbs (439 kg); T2290KWNC-42 weighs 622 lbs (282.1 kg), a 346 lbs difference. Operating weight bears on trailer payload, ramps and soft turf. On its own it says nothing about build quality. What GR2120's weight means for a trailer ›
- GR2120 has a Kubota HST transmission; T2290KWNC-42 has a Hydro-Gear T3HD transmission. The transmission grade tracks duty rating and speed. Grade names are each maker's own and are not comparable across brands.
- GR2120 runs on Diesel; T2290KWNC-42 runs on Gasoline. Fuel type sets what you buy and store; it is not a measure of power.
- GR2120 holds 4.8 gal (18 L) of fuel; T2290KWNC-42 holds 3.6 gal (13.6 L) of fuel, a 1.2 gal difference. Tank size bounds how long a machine runs between stops. Consumption varies with engine, load and speed, so hours per tank are not fixed.
4 more differences, calculated figures
Other verified differences
- GR2120 has a 48 in (1,219 mm) deck; T2290KWNC-42 has a 42 in (1,067 mm) deck, a 6 in difference.
- GR2120 has a published top speed of 6.2 mph; T2290KWNC-42 has a published top speed of 5.7 mph, a 0.5 mph difference.
- GR2120 has a 47.5 ci (778 cc) engine; T2290KWNC-42 has a 44.3 ci (726 cc) engine, a 3.2 ci difference.
- GR2120 has a 21 hp engine; T2290KWNC-42 has a 21.5 hp engine, a 0.5 hp difference.
Calculated by MowerFacts
- GR2120 works out to 2.4 acres/hour; T2290KWNC-42 works out to 1.9 acres/hour, a 0.5 acres/hour difference. Calculated by MowerFacts from deck width and the published top speed at 80% efficiency; it is not a manufacturer figure, and real mowing is slower.
Verified means each manufacturer publishes the figure. A bigger number is only a bigger number; nothing here says which machine is better. The full specification table is below.
Which is faster on your property? › Measure your lawn once and MowerFacts times all 2 against it.
| Spec | GR2120 Kubota · Riding (Lawn Tractor) |
T2290KWNC-42 Kubota · Riding (Lawn Tractor) |
|---|---|---|
| List price | dealer quote | dealer quote |
| Engine | ||
| Power Source | diesel | gas |
| Displacement | 47.5 ci (778 cc) | 44.3 ci (726 cc) |
| Engine Power | 21 hp | 21.5 hp |
| Engine Make | Kubota D782 | Kawasaki FR651V |
| Fuel Type | Diesel | Gasoline |
| Deck | ||
| Cutting Width | 48 in (1219 mm) | 42 in (1067 mm) |
| Drive | ||
| Transmission | Kubota HST | Hydro-Gear T3HD |
| Ground Speed | 6.2 mph | 5.7 mph |
| Drive System | Belt | Belt |
| Dimensions | ||
| Weight | 968 lbs (439 kg) | 622 lbs (282.1 kg) |
| Fuel Capacity | 4.8 gal (18 L) | 3.6 gal (13.6 L) |
GR2120: Specs verified against the manufacturer spec sheet on Jun 6, 2026 — kubotausa.com.
T2290KWNC-42: Specs verified against the manufacturer spec sheet on Jun 6, 2026 — kubotausa.com.
Independent reference database. Specs compiled from manufacturer sources and normalized for comparison; verify with the manufacturer or dealer before purchase.