Compare Mowers
Prices are the recommended retail prices published by each manufacturer’s Australian site, in AUD, as read on the date shown on each model’s page; dealers set the final price.
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 T2090BR-42 — residential: typical home lawns; 42-inch deck; gas powered
- Kubota GR2120-54 — prosumer: larger home properties and light acreage; 54-inch deck
What’s different? The 5 differences that matter most, from the published figures.
- T2090BR-42 uses a Briggs & Stratton GH660V engine; GR2120-54 uses a Kubota D782 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.
- T2090BR-42 weighs 270 kg (595 lbs); GR2120-54 weighs 440 kg (970 lbs), a 170 kg difference. Operating weight bears on trailer payload, ramps and soft turf. On its own it says nothing about build quality. What T2090BR-42's weight means for a trailer ›
- T2090BR-42 has a Hydro-Gear T3HD transmission; GR2120-54 has a HST, Shaft Drive transmission. The transmission grade tracks duty rating and speed. Grade names are each maker's own and are not comparable across brands.
- T2090BR-42 runs on Petrol; GR2120-54 runs on Diesel. Fuel type sets what you buy and store; it is not a measure of power.
- T2090BR-42 has a 1,067 mm (42 in) deck; GR2120-54 has a 1,372 mm (54 in) deck, a 305 mm difference. Deck width sets how much grass each pass covers. Mowing time also depends on ground speed, turns and obstacles, so a wider deck alone does not fix the job's length. Time both decks on your own lawn ›
7 more differences, calculated figures
Other verified differences
- T2090BR-42 has 4Wheels-2WD drive; GR2120-54 has 4 w/Cruise control drive.
- T2090BR-42 has Side discharge discharge; GR2120-54 has Right side discharge.
- T2090BR-42 holds 13.6 L (3.6 gal) of fuel; GR2120-54 holds 18 L (4.8 gal) of fuel, a 4.4 L difference.
- T2090BR-42 has a 20 hp engine; GR2120-54 has a 17 hp engine, a 3 hp difference.
- T2090BR-42 has 2 blades; GR2120-54 has 3 blades.
- T2090BR-42 has a 656 cc (40 ci) engine; GR2120-54 has a 778 cc (47.5 ci) engine, a 122 cc difference.
- T2090BR-42 has a published top speed of 5.7 mph; GR2120-54 has a published top speed of 6.2 mph, a 0.5 mph difference.
Calculated by MowerFacts
- T2090BR-42 works out to 0.79 ha/hour; GR2120-54 works out to 1.10 ha/hour, a 0.31 ha/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 | T2090BR-42 Kubota · Riding (Lawn Tractor) |
GR2120-54 Kubota · Riding (Lawn Tractor) |
|---|---|---|
| RRP (AUD) | dealer quote | dealer quote |
| Engine | ||
| Power Source | gas | diesel |
| Displacement | 40 ci (656 cc) | 47.5 ci (778 cc) |
| Engine Power | 20 hp | 17 hp |
| Engine Make | Briggs & Stratton GH660V | Kubota D782 |
| Cylinders | 2 | 3 |
| Fuel Type | Petrol | Diesel |
| Deck | ||
| Cutting Width | 42 in (1067 mm) | 54 in (1372 mm) |
| Blades | 2 | 3 |
| Min Cut Height | 1 in (25 mm) | 1 in (25 mm) |
| Max Cut Height | 4 in (102 mm) | 4 in (102 mm) |
| Discharge | Side discharge | Right side |
| Drive | ||
| Transmission | Hydro-Gear T3HD | HST, Shaft Drive |
| Ground Speed | 5.7 mph | 6.2 mph |
| Drive Tire Size | 20 x 10.0 - 10 | 23 × 10.50 – 12 |
| Reverse Speed | 3.5 mph | 3.1 mph |
| Drive System | 4Wheels-2WD | 4 w/Cruise control |
| Dimensions | ||
| Weight | 595 lbs (270 kg) | 970 lbs (440 kg) |
| Fuel Capacity | 3.6 gal (13.6 L) | 4.8 gal (18 L) |
| Length | 74.8 in (1900 mm) | 77.2 in (1960 mm) |
| Width | 54.8 in (1392 mm) | 66.9 in (1700 mm) |
| Height | 51.4 in (1305 mm) | 50.8 in (1290 mm) |
| General | ||
| Bagger Capacity | 7 bu (247 L) | 7 bu (247 L) |
Where these models differ, explained
Independent reference database. Specs compiled from manufacturer sources and normalized for comparison; verify with the manufacturer or dealer before purchase.