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.
- Altoz XR 480 / 540 / 540 SS — commercial: daily paid use and high acreage; 48-inch deck; gas powered
- Gravely PRO-STANCE 48 KAWASAKI — commercial: daily paid use and high acreage; 48-inch deck; gas powered
What’s different? The 5 differences that matter most, from the published figures.
- XR 480 / 540 / 540 SS holds 5 gal (18.9 L) of fuel; PRO-STANCE 48 KAWASAKI holds 9 gal (34.1 L) of fuel, a 4 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.
- XR 480 / 540 / 540 SS has a Fabricated Steel deck; PRO-STANCE 48 KAWASAKI has a 7 ga deck.
- XR 480 / 540 / 540 SS has a published top speed of 8 mph; PRO-STANCE 48 KAWASAKI has a published top speed of 9 mph, a 1 mph difference. Top speed is the maker's maximum in transport. Mowing speed is lower and depends on grass, terrain and the deck.
- XR 480 / 540 / 540 SS weighs 800 lbs (362.9 kg); PRO-STANCE 48 KAWASAKI weighs 875 lbs (396.9 kg), a 75 lbs difference. Operating weight bears on trailer payload, ramps and soft turf. On its own it says nothing about build quality. What XR 480 / 540 / 540 SS's weight means for a trailer ›
- XR 480 / 540 / 540 SS has a 23 hp engine; PRO-STANCE 48 KAWASAKI has a 23.5 hp engine, a 0.5 hp difference. Published horsepower is the maker's rating at a stated engine speed. It is a different measure from displacement, and two engines of equal rating can pull differently.
calculated figures and what isn’t comparable
Calculated by MowerFacts
- XR 480 / 540 / 540 SS works out to 3.1 acres/hour; PRO-STANCE 48 KAWASAKI works out to 3.5 acres/hour, a 0.4 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.
Not comparable
- Warranty: not published for PRO-STANCE 48 KAWASAKI.
- Blades: not published for PRO-STANCE 48 KAWASAKI.
- Transmission: not published for PRO-STANCE 48 KAWASAKI.
- Deck Construction: not published for XR 480 / 540 / 540 SS.
- Drive System: not published for XR 480 / 540 / 540 SS.
- Discharge: not published for XR 480 / 540 / 540 SS.
- Cut height range: not published for PRO-STANCE 48 KAWASAKI.
- Price: XR 480 / 540 / 540 SS is dealer quote only.
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 | XR 480 / 540 / 540 SS Altoz · Commercial |
PRO-STANCE 48 KAWASAKI Gravely · Commercial |
|---|---|---|
| List price | dealer quote | $10,699 |
| Engine | ||
| Power Source | gas | gas |
| Engine Make | Kawasaki | Kawasaki® |
| Displacement | 44.3 ci (726 cc) | 44.3 ci (725.9 cc) |
| Engine Power | 23 hp | 23.5 hp |
| Cylinders | 2 | — |
| Engine Model | FR | FX730V |
| Fuel Type | Gasoline | Gas |
| Deck | ||
| Cutting Width | 48 in (1219 mm) | 48 in (1219 mm) |
| Blades | 3 | — |
| Deck Material | Fabricated Steel | 7 ga |
| Deck Construction | — | Fabricated X-Factor® 3 |
| Deck Gauge | — | 7 |
| Anti-Scalp Rollers | Yes | — |
| Min Cut Height | 1.5 in (38 mm) | — |
| Blade Tip Speed | 18501 ft/min (5639 m/min) | — |
| Discharge | — | Side |
| Max Cut Height | 4.3 in (108 mm) | — |
| Drive | ||
| Transmission | Hydrostatic | — |
| Ground Speed | 8 mph | 9 mph |
| Drive Tire Size | 20" | — |
| Reverse Speed | — | 3 mph |
| Drive System | — | Hydro-Gear® ZT-3400 Transaxles |
| Dimensions | ||
| Weight | 800 lbs (362.9 kg) | 875 lbs (396.9 kg) |
| Fuel Capacity | 5 gal (18.9 L) | 9 gal (34.1 L) |
| Length | 80 in (2032 mm) | — |
| Height | 49 in (1245 mm) | — |
| General | ||
| Warranty | 3 yr | — |
Where these models differ, explained
XR 480 / 540 / 540 SS: Specs verified against the manufacturer spec sheet on Jun 6, 2026 — altoz.com.
PRO-STANCE 48 KAWASAKI: Specs verified against the retailer listing on Jun 6, 2026 — cuttingedgelawn.com.
Independent reference database. Specs compiled from manufacturer sources and normalized for comparison; verify with the manufacturer or dealer before purchase.