Kubota GR2120
Riding (Lawn Tractor) mower · Model GR2120 · Commercial-duty · Diesel
Kubota doesn’t publish a list price for this model — it’s dealer quote only. The Kubota product page is the place to start.
- Weighs 968 lb
- On a 6×12 trailer 1,868 lb towed, single-axle 3,500 lb
- Mows an acre in 36 min (25 at top speed) How long for your yard? ›
- How these are worked out ›
The Kubota GR2120 is a commercial-grade lawn tractor, built for daily professional use, with a 48-inch deck and a 778cc engine making 21 hp. It weighs 967.8 lb (439 kg).
At a glance
Compare similar mowers See how this mower compares with machines of a similar size and purpose.
Chosen by stated rules, not opinion: same class, a deck within 6 in of this one, the same kind of power and a compatible duty class, then the closest power, weight and price, with other makers preferred. Figures are the manufacturers’ published ones; nothing is estimated.
Engine
| Power Source | diesel |
|---|---|
| Displacement | 47.5 ci (778 cc) |
| Engine Power | 21 hp |
| Engine Make | Kubota D782 |
| Fuel Type | Diesel |
Deck
| Cutting Width | 48 in (1219 mm) |
|---|
Drive
| Transmission | Kubota HST |
|---|---|
| Ground Speed | 6.2 mph |
| Drive System | Belt |
Dimensions
| Weight | 968 lbs (439 kg) |
|---|---|
| Fuel Capacity | 4.8 gal (18 L) |
Professional use
How the GR2120 fits commercial and high-acreage work, from the specs we have. Duty class: Commercial.
Productivity computed from deck width and ground speed. Compare on the calculator ›
| Deck width | 48 in |
|---|---|
| Engine make | Kubota D782 |
| Engine displacement | 778 cc |
| Engine power | 21 hp |
| Transmission | Kubota HST |
| Ground speed | 6.2 mph |
| Fuel capacity | 18 L |
| Weight | 439 kg |
Kubota doesn’t publish 11 of these for the GR2120: drive type, cut-height range, warranty, commercial warranty, deck construction, deck gauge, spindle type, frame construction, anti-scalp rollers, drive tire size, seat type.
See the Kubota commercial pro hub › · Professional buying hub ›
Similar models
Other riding (lawn tractor) mowers with comparable specs — including other brands — that buyers cross-shop with the GR2120.
Specs verified against the manufacturer spec sheet on Jun 6, 2026 — kubotausa.com.
See every mower with a Kubota engine ›
Other Kubota GR Series models › 1 more in this range: GR2020G
See all Kubota mowers and specs ›
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Independent reference database. Specs compiled from manufacturer sources and normalized for comparison; verify with the manufacturer or dealer before purchase.
What the specs work out to
Figures MowerFacts computes from Kubota’s own numbers — not published by the manufacturer.
Mowing time
- ¼ acre9 min 6 min
- ½ acre18 min 12 min
- 1 acre36 min 25 min
- 2 acres1 h 11 min 50 min
- 5 acres2 h 58 min 2 h 5 min
About 36 min per acre at 1.68 acres/hour, mowing at 4.3 mph. The second figure is at the published 6.2 mph top speed (2.4 acres/hour) — faster than anyone really mows. About 8.1 acres per tank.
Weight & hauling
- Machine weight968 lb
- + 6×12 trailer900 lb
- Towed weight1,868 lb
- single-axle 3,500 lbCarries it, 1,632 lb spare
- tandem-axle 7,000 lbCarries it, 5,132 lb spare
Needs a single-axle 3,500 lb trailer and a vehicle rated to tow at least 1,868 lb.
Gate & trailer fit
- 32 in gateToo wide
- 36 in gateToo wide
- 48 in gateToo wide
Needs at least 54 in of clearance (estimated).
Power & run time
- Power per deck inch0.438 hp/in
- Run time per tank~4.8 h
Mowing times assume 1.68 acres/hour: deck width x 4.3 mph at 80% efficiency, which allows for overlap, turns and trimming. 4.3 mph is 70% of the 6.2 mph top speed Kubota publishes - almost nobody mows flat out. The "at top speed" figure is the same sum at 6.2 mph, shown so you can see it.
Fit uses the deck width plus 6 in for the discharge chute, because Kubota doesn't publish an overall width — measure before buying if a gate is tight.
Towed weight adds a 900 lb allowance for a 6x12 open utility trailer to Kubota's published machine weight. Your trailer's own weight is on its VIN plate. Tongue weight, axle placement and your vehicle's tow rating are still yours to check — this is the load, not a loading plan.
Run time assumes a typical 1 gal/hour burn at working load; real consumption varies with engine, load and cut.
Kubota GR2120 questions
What size deck is on the Kubota GR2120?
The Kubota GR2120 has a 48-inch (1219 mm) cutting deck.
What engine is in the Kubota GR2120?
The Kubota GR2120 is powered by a Kubota D782, 778 cc, 21 hp. Horsepower is the manufacturer's own rating.
How much does the Kubota GR2120 weigh?
The Kubota GR2120 weighs 968 lb (439 kg) as specified by Kubota.
What size trailer do I need for the Kubota GR2120?
At 968 lb, the Kubota GR2120 on a typical 6x12 open utility trailer (about 900 lb empty) is roughly 1,868 lb of towed weight. That is within a single-axle 3,500 lb trailer, and your tow vehicle needs to be rated for at least 1,868 lb. Tongue weight, axle placement and your own trailer's empty weight still have to be checked — this is the arithmetic, not a loading plan.
How fast is the Kubota GR2120?
Top ground speed is 6.2 mph. With its 48-inch deck that works out to about 2.4 acres per hour at 80% efficiency — allowing for overlap, turns and trimming.
How long does the Kubota GR2120 take to mow an acre?
About 25 min per acre, from its 48-inch deck at 6.2 mph and 80% efficiency — roughly 2.4 acres an hour, so five acres is about 2 h 5 min. Rough or obstacle-heavy ground takes longer; this is deck width times ground speed, not a timed test.
How big is the fuel tank on the Kubota GR2120?
The Kubota GR2120 holds 4.8 gal (18 L) of fuel.
How much does the Kubota GR2120 cost?
Kubota doesn't publish a list price for the Kubota GR2120 — it's sold on a dealer quote. MowerFacts records prices only where the manufacturer publishes them.
What is the Kubota GR2120 built for?
Commercial-duty riding mower. Built for daily, paid commercial use.
Source: Kubota (manufacturer) · archived copy