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.
- Ferris 300R Zero Turn Mower — commercial: daily paid use and high acreage; 42-inch deck; gas powered
- Gravely ZT XL 42 KAWASAKI — commercial: daily paid use and high acreage; 42-inch deck; gas powered
What’s different? The 5 differences that matter most, from the published figures.
- 300R Zero Turn Mower uses a Briggs & Stratton® PXi SeriesTM engine; ZT XL 42 KAWASAKI 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.
- 300R Zero Turn Mower has a 12-gauge, Fabricated deck; ZT XL 42 KAWASAKI has a Fabricated X-Factor® deck.
- 300R Zero Turn Mower weighs 544 lbs (246.8 kg); ZT XL 42 KAWASAKI weighs 675 lbs (306.2 kg), a 131 lbs difference. Operating weight bears on trailer payload, ramps and soft turf. On its own it says nothing about build quality. What 300R Zero Turn Mower's weight means for a trailer ›
- 300R Zero Turn Mower lists at $4,949; ZT XL 42 KAWASAKI lists at $5,499, a $550 difference. List price is the maker's own figure before tax, freight and dealer setup. Dealers set the final price.
- 300R Zero Turn Mower has a published top speed of 8 mph; ZT XL 42 KAWASAKI has a published top speed of 7 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.
2 more differences, calculated figures and what isn’t comparable
Other verified differences
- 300R Zero Turn Mower holds 3 gal (11.4 L) of fuel; ZT XL 42 KAWASAKI holds 3.5 gal (13.2 L) of fuel, a 0.5 gal difference.
- 300R Zero Turn Mower has a 23 hp engine; ZT XL 42 KAWASAKI has a 21.5 hp engine, a 1.5 hp difference.
Calculated by MowerFacts
- 300R Zero Turn Mower works out to 2.7 acres/hour; ZT XL 42 KAWASAKI works out to 2.4 acres/hour, a 0.3 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
- Warranty: not published for ZT XL 42 KAWASAKI.
- Transmission: not published for ZT XL 42 KAWASAKI.
- Deck Material: not published for 300R Zero Turn Mower.
- Drive System: not published for 300R Zero Turn Mower.
- Discharge: not published for 300R Zero Turn Mower.
- Start Type: not published for ZT XL 42 KAWASAKI.
- Cut height range: not published for ZT XL 42 KAWASAKI.
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 | 300R Zero Turn Mower Ferris · Zero-Turn |
ZT XL 42 KAWASAKI Gravely · Zero-Turn |
|---|---|---|
| List price | $4,949 | $5,499 |
| Engine | ||
| Power Source | gas | gas |
| Displacement | 44.2 ci (724 cc) | 44.3 ci (726 cc) |
| Engine Power | 23 hp | 21.5 hp |
| Engine Make | Briggs & Stratton® PXi SeriesTM | Kawasaki® |
| Engine Model | — | FR651V |
| Fuel Type | Gas | Gas |
| Cylinders | 2 | — |
| Start Type | Electric | — |
| Deck | ||
| Cutting Width | 42 in (1067 mm) | 42 in (1067 mm) |
| Min Cut Height | 1.5 in (38 mm) | — |
| Max Cut Height | 4.5 in (114 mm) | — |
| Deck Material | — | 11 ga |
| Deck Construction | 12-gauge, Fabricated | Fabricated X-Factor® |
| Deck Gauge | 12 | 11 |
| Discharge | — | Side |
| Drive | ||
| Transmission | Hydro-Gear® ZT-2800 | — |
| Ground Speed | 8 mph | 7 mph |
| Reverse Speed | — | 3 mph |
| Drive System | — | Hydro-Gear® ZT-2800® Transaxles |
| Dimensions | ||
| Weight | 544 lbs (246.8 kg) | 675 lbs (306.2 kg) |
| Fuel Capacity | 3 gal (11.4 L) | 3.5 gal (13.2 L) |
| Length | 73.5 in (1867 mm) | — |
| Width | 55 in (1397 mm) | — |
| General | ||
| Warranty | 3 yr | — |
Where these models differ, explained
300R Zero Turn Mower: Specs verified against the manufacturer spec sheet on Jun 6, 2026 — ferrismowers.com.
ZT XL 42 KAWASAKI: Specs verified against the manufacturer spec sheet on Jun 6, 2026 — gravely.com.
Independent reference database. Specs compiled from manufacturer sources and normalized for comparison; verify with the manufacturer or dealer before purchase.