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A neutral, side-by-side reference of each model's stated specifications. MowerFacts does not rank one model above another — 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.
- Exmark Exmark Navigator Mower — commercial: daily paid use and high acreage; 48-inch deck
- Exmark Commercial 21 X-Series (ECX180) — commercial: daily paid use and high acreage; 21-inch deck; gas powered
| Spec | Exmark Navigator Mower Exmark · Commercial |
Commercial 21 X-Series (ECX180) Exmark · Commercial |
|---|---|---|
| Engine | ||
| Power Source | — | gas |
| Engine Make | Kohler CH749 | Kawasaki FJ180V |
| Displacement | 45.6 ci (747 cc) | 10.9 ci (179 cc) |
| Engine Power | 26.5 hp | — |
| Engine Model | ECH749 | — |
| Deck | ||
| Cutting Width | 48 in (1219 mm) | 21 in (533 mm) |
| Deck Construction | 7-gauge sides joined by a continuous bead weld to a 10-gauge top, 3/16" wear guard | — |
| Deck Gauge | 7 | — |
| Blade Tip Speed | 18500 ft/min (5638.8 m/min) | — |
| Max Cut Height | 4 in (102 mm) | 4.5 in (114 mm) |
| Min Cut Height | 1 in (25 mm) | 1 in (25 mm) |
| Drive | ||
| Ground Speed | 7 mph | 4.2 mph |
| Dimensions | ||
| Weight | 1191 lbs (540.2 kg) | 117 lbs (53.1 kg) |
| Fuel Capacity | 7.5 gal (28.4 L) | 1 gal (3.8 L) |
| Length | 94.5 in (2400 mm) | — |
| Width | 49.2 in (1250 mm) | — |
| Height | 51.2 in (1300 mm) | — |
| General | ||
| Bagger Capacity | 8.2 bu (287.7 L) | — |
Exmark Navigator Mower: Specs verified against the retailer listing on Jun 6, 2026 — allmachines.com.
Commercial 21 X-Series (ECX180): Specs verified against the retailer listing on Jun 6, 2026 — altmantractor.com.
Independent reference database. Specs compiled from manufacturer sources and normalized for comparison; verify with the manufacturer or dealer before purchase.