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 300S Zero Turn Mower — commercial: daily paid use and high acreage; gas powered
- Gravely ZT XL 42 KAWASAKI — commercial: daily paid use and high acreage; 42-inch deck; gas powered
What’s different? The 2 differences that matter most, from the published figures.
- 300S Zero Turn Mower has a 12-gauge, Fabricated deck; ZT XL 42 KAWASAKI has a Fabricated X-Factor® deck.
- 300S Zero Turn Mower lists at $5,279; ZT XL 42 KAWASAKI lists at $5,499, a $220 difference. List price is the maker's own figure before tax, freight and dealer setup. Dealers set the final price.
what isn’t comparable
Not comparable
- Cutting Width: not published for 300S Zero Turn Mower.
- Engine Power: not published for 300S Zero Turn Mower.
- Voltage: not published for ZT XL 42 KAWASAKI.
- Displacement: not published for 300S Zero Turn Mower.
- Weight: not published for 300S Zero Turn Mower.
- Ground Speed: not published for 300S Zero Turn Mower.
- Fuel Capacity: not published for 300S Zero Turn Mower.
- Warranty: not published for ZT XL 42 KAWASAKI.
- Transmission: not published for ZT XL 42 KAWASAKI.
- Deck Material: not published for 300S Zero Turn Mower.
- Drive System: not published for 300S Zero Turn Mower.
- Discharge: not published for 300S Zero Turn Mower.
- Start Type: 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 | 300S Zero Turn Mower Ferris · Zero-Turn |
ZT XL 42 KAWASAKI Gravely · Zero-Turn |
|---|---|---|
| List price | $5,279 | $5,499 |
| Engine | ||
| Power Source | gas | gas |
| Displacement | — | 44.3 ci (726 cc) |
| Engine Power | — | 21.5 hp |
| Engine Make | Kawasaki® FR651V 21.5hp | Kawasaki® |
| Engine Model | — | FR651V |
| Fuel Type | Gas | Gas |
| Cylinders | 2 | — |
| Start Type | Electric | — |
| Electrical | ||
| Voltage | 651 V | — |
| Deck | ||
| Cutting Width | — | 42 in (1067 mm) |
| Deck Material | — | 11 ga |
| Deck Construction | 12-gauge, Fabricated | Fabricated X-Factor® |
| Deck Gauge | — | 11 |
| Discharge | — | Side |
| Drive | ||
| Transmission | Dual Hydro-Gear® ZT-2200® transaxles with 7" cooling fans | — |
| Ground Speed | — | 7 mph |
| Reverse Speed | — | 3 mph |
| Drive System | — | Hydro-Gear® ZT-2800® Transaxles |
| Dimensions | ||
| Weight | — | 675 lbs (306.2 kg) |
| Fuel Capacity | — | 3.5 gal (13.2 L) |
| General | ||
| Warranty | 3 yr | — |
Where these models differ, explained
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.