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.
- Gravely ZT XL 42 KAWASAKI — commercial: daily paid use and high acreage; 42-inch deck; gas powered
- Bad Boy Mowers MZ Rambler — 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.
- ZT XL 42 KAWASAKI uses a Kawasaki® engine; MZ Rambler uses a Briggs 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.
- ZT XL 42 KAWASAKI has a Fabricated X-Factor® deck; MZ Rambler has a 7 gauge / 4.5mm deck.
- ZT XL 42 KAWASAKI holds 3.5 gal (13.2 L) of fuel; MZ Rambler holds 5 gal (18.9 L) of fuel, a 1.5 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.
- ZT XL 42 KAWASAKI has a 44.3 ci (726 cc) engine; MZ Rambler has a 33 ci (540 cc) engine, a 11.4 ci difference. Displacement is the engine's size, not its output. A larger engine is not necessarily a more powerful one.
- ZT XL 42 KAWASAKI has a published top speed of 7 mph; MZ Rambler has a published top speed of 6 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
- ZT XL 42 KAWASAKI has a 21.5 hp engine; MZ Rambler has a 19 hp engine, a 2.5 hp difference.
- ZT XL 42 KAWASAKI weighs 675 lbs (306.2 kg); MZ Rambler weighs 633 lbs (287 kg), a 42 lbs difference.
Calculated by MowerFacts
- ZT XL 42 KAWASAKI works out to 2.4 acres/hour; MZ Rambler works out to 2.0 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
- Transmission: not published for ZT XL 42 KAWASAKI.
- Fuel Type: not published for MZ Rambler.
- Drive System: not published for MZ Rambler.
- Discharge: not published for MZ Rambler.
- Cut height range: not published for ZT XL 42 KAWASAKI.
- Price: MZ Rambler 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 | ZT XL 42 KAWASAKI Gravely · Zero-Turn |
MZ Rambler Bad Boy Mowers · Zero-Turn |
|---|---|---|
| List price | $5,499 | dealer quote |
| Engine | ||
| Power Source | gas | gas |
| Displacement | 44.3 ci (726 cc) | 33 ci (540 cc) |
| Engine Power | 21.5 hp | 19 hp |
| Engine Make | Kawasaki® | Briggs |
| Engine Model | FR651V | — |
| Fuel Type | Gas | — |
| 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 | All New Sloped 3/16˝ or 7-Gauge All Steel, Formed and Welded Deck with Reinforced Edges |
| Deck Construction | Fabricated X-Factor® | 7 gauge / 4.5mm |
| Deck Gauge | 11 | 7 |
| Discharge | Side | — |
| Drive | ||
| Transmission | — | Dual Hydro Gear ZT2200 |
| Ground Speed | 7 mph | 6 mph |
| Drive Tire Size | — | 18x8.5-8 Turf |
| Reverse Speed | 3 mph | — |
| Drive System | Hydro-Gear® ZT-2800® Transaxles | — |
| Dimensions | ||
| Weight | 675 lbs (306.2 kg) | 633 lbs (287 kg) |
| Fuel Capacity | 3.5 gal (13.2 L) | 5 gal (18.9 L) |
| Length | — | 76 in (1930 mm) |
| Height | — | 42 in (1066 mm) |
Where these models differ, explained
ZT XL 42 KAWASAKI: Specs verified against the manufacturer spec sheet on Jun 6, 2026 — gravely.com.
MZ Rambler: Specs verified against the manufacturer spec sheet on Jun 6, 2026 — badboycountry.com.
Independent reference database. Specs compiled from manufacturer sources and normalized for comparison; verify with the manufacturer or dealer before purchase.