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.
- Exmark Radius E-Series (RDE 54 in) — commercial: daily paid use and high acreage; 54-inch deck; gas powered
- Husqvarna Z454 — commercial: daily paid use and high acreage; 54-inch deck; gas powered
What’s different? The 5 differences that matter most, from the published figures.
- Radius E-Series (RDE 54 in) lists at $6,999; Z454 lists at $9,199, a $2,200 difference. List price is the maker's own figure before tax, freight and dealer setup. Dealers set the final price.
- Radius E-Series (RDE 54 in) has a published top speed of 8 mph; Z454 has a published top speed of 10 mph, a 2 mph difference. Top speed is the maker's maximum in transport. Mowing speed is lower and depends on grass, terrain and the deck.
- Radius E-Series (RDE 54 in) holds 7 gal (26.5 L) of fuel; Z454 holds 6 gal (22.7 L) of fuel, a 1 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.
- Radius E-Series (RDE 54 in) cuts from 1.5 in (38 mm) to 5 in (127 mm); Z454 cuts from 1.5 in (38 mm) to 4.5 in (114 mm). The cut-height range is the shortest and tallest cut the deck offers. Most lawns are kept well inside it.
- Radius E-Series (RDE 54 in) has a 23 hp engine; Z454 has a 22 hp engine, a 1 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.
calculated figures and what isn’t comparable
Calculated by MowerFacts
- Radius E-Series (RDE 54 in) works out to 3.5 acres/hour; Z454 works out to 4.4 acres/hour, a 0.9 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
- Displacement: not published for Radius E-Series (RDE 54 in).
- Weight: not published for Radius E-Series (RDE 54 in).
- Blades: not published for Radius E-Series (RDE 54 in).
- Transmission: not published for Radius E-Series (RDE 54 in).
- Deck Material: not published for Radius E-Series (RDE 54 in).
- Discharge: not published for Radius E-Series (RDE 54 in).
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 | Radius E-Series (RDE 54 in) Exmark · Commercial |
Z454 Husqvarna · Commercial |
|---|---|---|
| List price | $6,999 | $9,199 |
| Engine | ||
| Power Source | gas | gas |
| Engine Make | Kawasaki FR691 | Kawasaki |
| Displacement | — | 44.3 ci (725.9 cc) |
| Engine Power | 23 hp | 22 hp |
| Cylinders | — | 2 |
| Engine Model | — | FS Series V-Twin |
| Deck | ||
| Cutting Width | 54 in (1372 mm) | 54 in (1372 mm) |
| Blades | — | 3 |
| Deck Material | — | Steel |
| Anti-Scalp Rollers | — | Yes |
| Min Cut Height | 1.5 in (38 mm) | 1.5 in (38 mm) |
| Discharge | — | Collect/Mulch/Side discharge |
| Cut Positions | — | 13 |
| Max Cut Height | 5 in (127 mm) | 4.5 in (114 mm) |
| Drive | ||
| Transmission | — | Hydrostatic |
| Ground Speed | 8 mph | 10 mph |
| Dimensions | ||
| Weight | — | 745 lbs (337.9 kg) |
| Fuel Capacity | 7 gal (26.5 L) | 6 gal (22.7 L) |
| Length | — | 76.5 in (1943 mm) |
| Height | — | 49.3 in (1251 mm) |
| Commercial / Pro | ||
| Seat Type | — | Professional |
Where these models differ, explained
Radius E-Series (RDE 54 in): Specs verified against the manufacturer spec sheet on Jun 6, 2026 — exmark.com.
Z454: Specs verified against the manufacturer spec sheet on Jun 6, 2026 — husqvarna.com.
Independent reference database. Specs compiled from manufacturer sources and normalized for comparison; verify with the manufacturer or dealer before purchase.