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.
- Walker Walker Model B27i — commercial: daily paid use and high acreage; 74-inch deck; gas powered
- Altoz XC 720 SSi — commercial: daily paid use and high acreage; 72-inch deck; gas powered
What’s different? The 5 differences that matter most, from the published figures.
- Walker Model B27i has a published top speed of 8 mph; XC 720 SSi has a published top speed of 19 mph, a 11 mph difference. Top speed is the maker's maximum in transport. Mowing speed is lower and depends on grass, terrain and the deck.
- Walker Model B27i holds 4.7 gal (17.8 L) of fuel; XC 720 SSi holds 14 gal (53 L) of fuel, a 9.3 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.
- Walker Model B27i uses a Rehlko engine; XC 720 SSi uses a Kawasaki 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.
- Walker Model B27i has a 26.5 hp engine; XC 720 SSi has a 35 hp engine, a 8.5 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.
- Walker Model B27i has a 45.6 ci (747 cc) engine; XC 720 SSi has a 61 ci (999 cc) engine, a 15.4 ci difference. Displacement is the engine's size, not its output. A larger engine is not necessarily a more powerful one.
2 more differences, calculated figures and what isn’t comparable
Other verified differences
- Walker Model B27i cuts from 1.5 in (38 mm) to 4 in (102 mm); XC 720 SSi cuts from 1.5 in (38 mm) to 5 in (127 mm).
- Walker Model B27i has a 74 in (1,880 mm) deck; XC 720 SSi has a 72 in (1,829 mm) deck, a 2 in difference.
Calculated by MowerFacts
- Walker Model B27i works out to 4.8 acres/hour; XC 720 SSi works out to 11.1 acres/hour, a 6.3 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.
Not comparable
- Weight: not published for XC 720 SSi.
- Warranty: not published for Walker Model B27i.
- Blades: not published for Walker Model B27i.
- Deck Material: not published for Walker Model B27i.
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 | Walker Model B27i Walker · Commercial |
XC 720 SSi Altoz · Commercial |
|---|---|---|
| List price | dealer quote | dealer quote |
| Engine | ||
| Power Source | gas | gas |
| Engine Make | Rehlko | Kawasaki |
| Displacement | 45.6 ci (747 cc) | 61 ci (999 cc) |
| Engine Power | 26.5 hp | 35 hp |
| Cylinders | — | 2 |
| Engine Model | — | FX1000V EFI |
| Fuel Type | Automotive Grade Unleaded Gasoline (87 Octane Minimum, 10% Ethanol Maximum) | Gasoline |
| Deck | ||
| Cutting Width | 74 in (1880 mm) | 72 in (1829 mm) |
| Blades | — | 3 |
| Deck Material | — | Fabricated Steel |
| Anti-Scalp Rollers | — | Yes |
| Min Cut Height | 1.5 in (38 mm) | 1.5 in (38 mm) |
| Blade Tip Speed | — | 18501 ft/min (5639 m/min) |
| Max Cut Height | 4 in (102 mm) | 5 in (127 mm) |
| Drive | ||
| Transmission | Dual, Independent Hydro-Gear® ZT3100 Integrated Transaxles | Hydrostatic |
| Ground Speed | 8 mph | 19 mph |
| Drive Tire Size | — | 26" |
| Dimensions | ||
| Weight | 606 lbs (274.9 kg) | — |
| Fuel Capacity | 4.7 gal (17.8 L) | 14 gal (53 L) |
| Length | — | 89 in (2261 mm) |
| General | ||
| Warranty | — | 3 yr |
Where these models differ, explained
Walker Model B27i: Specs verified against the manufacturer spec sheet on Jun 6, 2026 — walker.com.
XC 720 SSi: 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.