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 XP 540 HD / 660 HD / 720 HD — commercial: daily paid use and high acreage; 54-inch deck; gas powered
- Altoz TRX 354 — commercial: daily paid use and high acreage; 54-inch deck; gas powered
What’s different? The 5 differences that matter most, from the published figures.
- XP 540 HD / 660 HD / 720 HD has a published top speed of 11 mph; TRX 354 has a published top speed of 8 mph, a 3 mph difference. Top speed is the maker's maximum in transport. Mowing speed is lower and depends on grass, terrain and the deck.
- XP 540 HD / 660 HD / 720 HD holds 14 gal (53 L) of fuel; TRX 354 holds 10 gal (37.9 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.
- XP 540 HD / 660 HD / 720 HD cuts from 1.5 in (38 mm) to 5 in (127 mm); TRX 354 cuts from 2.2 in (57 mm) to 5 in (127 mm). The cut-height range is the shortest and tallest cut the deck offers. Most lawns are kept well inside it.
- XP 540 HD / 660 HD / 720 HD has a 27 hp engine; TRX 354 has a 24 hp engine, a 3 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.
- XP 540 HD / 660 HD / 720 HD has a 52 ci (852 cc) engine; TRX 354 has a 44.3 ci (726 cc) engine, a 7.7 ci difference. Displacement is the engine's size, not its output. A larger engine is not necessarily a more powerful one.
1 more difference, calculated figures
Other verified differences
- XP 540 HD / 660 HD / 720 HD weighs 1,330 lbs (603.3 kg); TRX 354 weighs 1,220 lbs (553.4 kg), a 110 lbs difference.
Calculated by MowerFacts
- XP 540 HD / 660 HD / 720 HD works out to 4.8 acres/hour; TRX 354 works out to 3.5 acres/hour, a 1.3 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 | XP 540 HD / 660 HD / 720 HD Altoz · Commercial |
TRX 354 Altoz · Commercial |
|---|---|---|
| List price | dealer quote | dealer quote |
| Engine | ||
| Power Source | gas | gas |
| Engine Make | Kawasaki | Kawasaki |
| Displacement | 52 ci (852 cc) | 44.3 ci (726 cc) |
| Engine Power | 27 hp | 24 hp |
| Cylinders | 2 | 2 |
| Engine Model | FX | FT |
| Fuel Type | Gasoline | Gasoline |
| Deck | ||
| Cutting Width | 54 in (1372 mm) | 54 in (1372 mm) |
| Blades | 3 | 3 |
| Deck Material | Fabricated Steel | Fabricated Steel Aero Deck |
| Anti-Scalp Rollers | Yes | Yes |
| Min Cut Height | 1.5 in (38 mm) | 2.2 in (57 mm) |
| Blade Tip Speed | 18501 ft/min (5639 m/min) | 18501 ft/min (5639 m/min) |
| Max Cut Height | 5 in (127 mm) | 5 in (127 mm) |
| Drive | ||
| Transmission | Hydrostatic | Hydrostatic |
| Ground Speed | 11 mph | 8 mph |
| Drive Tire Size | 24" | — |
| Dimensions | ||
| Weight | 1330 lbs (603.3 kg) | 1220 lbs (553.4 kg) |
| Fuel Capacity | 14 gal (53 L) | 10 gal (37.9 L) |
| Length | 83.5 in (2121 mm) | 84.5 in (2146 mm) |
| General | ||
| Warranty | 3 yr | 3 yr |
Where these models differ, explained
XP 540 HD / 660 HD / 720 HD: Specs verified against the manufacturer spec sheet on Jun 6, 2026 — altoz.com.
TRX 354: Specs verified against the manufacturer spec sheet on Jun 6, 2026 — altoz.com.
Independent reference database. Specs compiled from manufacturer sources and normalized for comparison; verify with the manufacturer or dealer before purchase.