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 IS600 Zero Turn Mower — commercial: daily paid use and high acreage; 48-inch deck; gas powered
- Ferris 300R Zero Turn Mower — 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.
- IS600 Zero Turn Mower lists at $9,294; 300R Zero Turn Mower lists at $4,949, a $4,345 difference. List price is the maker's own figure before tax, freight and dealer setup. Dealers set the final price.
- IS600 Zero Turn Mower uses a Kawasaki® FS600V engine; 300R Zero Turn Mower uses a Briggs & Stratton® PXi SeriesTM 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.
- IS600 Zero Turn Mower weighs 942 lbs (427.3 kg); 300R Zero Turn Mower weighs 544 lbs (246.8 kg), a 398 lbs difference. Operating weight bears on trailer payload, ramps and soft turf. On its own it says nothing about build quality. What IS600 Zero Turn Mower's weight means for a trailer ›
- IS600 Zero Turn Mower holds 6 gal (22.7 L) of fuel; 300R Zero Turn Mower holds 3 gal (11.4 L) of fuel, a 3 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.
- IS600 Zero Turn Mower has a 10-gauge, Fabricated deck; 300R Zero Turn Mower has a 12-gauge, Fabricated deck.
5 more differences, calculated figures and what isn’t comparable
Other verified differences
- IS600 Zero Turn Mower has a 18.5 hp engine; 300R Zero Turn Mower has a 23 hp engine, a 4.5 hp difference.
- IS600 Zero Turn Mower carries a 2-year warranty; 300R Zero Turn Mower carries a 3-year warranty, a 1 year difference.
- IS600 Zero Turn Mower has a published top speed of 10 mph; 300R Zero Turn Mower has a published top speed of 8 mph, a 2 mph difference.
- IS600 Zero Turn Mower has a 48 in (1,219 mm) deck; 300R Zero Turn Mower has a 42 in (1,067 mm) deck, a 6 in difference.
- IS600 Zero Turn Mower has a 36.8 ci (603 cc) engine; 300R Zero Turn Mower has a 44.2 ci (724 cc) engine, a 7.4 ci difference.
Calculated by MowerFacts
- IS600 Zero Turn Mower works out to 3.9 acres/hour; 300R Zero Turn Mower works out to 2.7 acres/hour, a 1.2 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
- Voltage: not published for 300R Zero Turn Mower.
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 | IS600 Zero Turn Mower Ferris · Zero-Turn |
300R Zero Turn Mower Ferris · Zero-Turn |
|---|---|---|
| List price | $9,294 | $4,949 |
| Engine | ||
| Power Source | gas | gas |
| Displacement | 36.8 ci (603 cc) | 44.2 ci (724 cc) |
| Engine Power | 18.5 hp | 23 hp |
| Engine Make | Kawasaki® FS600V | Briggs & Stratton® PXi SeriesTM |
| Fuel Type | Gas | Gas |
| Cylinders | 2 | 2 |
| Start Type | Electric | Electric |
| Electrical | ||
| Voltage | 600 V | — |
| Deck | ||
| Cutting Width | 48 in (1219 mm) | 42 in (1067 mm) |
| Min Cut Height | 1.5 in (38 mm) | 1.5 in (38 mm) |
| Max Cut Height | 4.5 in (114 mm) | 4.5 in (114 mm) |
| Deck Construction | 10-gauge, Fabricated | 12-gauge, Fabricated |
| Deck Gauge | — | 12 |
| Drive | ||
| Transmission | Dual commercial Hydro-Gear® ZT-3200® transaxles with 7" cooling fans | Hydro-Gear® ZT-2800 |
| Ground Speed | 10 mph | 8 mph |
| Reverse Speed | 5 mph | — |
| Dimensions | ||
| Weight | 942 lbs (427.3 kg) | 544 lbs (246.8 kg) |
| Fuel Capacity | 6 gal (22.7 L) | 3 gal (11.4 L) |
| Length | 80 in (2032 mm) | 73.5 in (1867 mm) |
| Width | 63 in (1600 mm) | 55 in (1397 mm) |
| General | ||
| Warranty | 2 yr | 3 yr |
Where these models differ, explained
IS600 Zero Turn Mower: Specs verified against the manufacturer spec sheet on Jun 6, 2026 — ferrismowers.com.
300R Zero Turn Mower: Specs verified against the manufacturer spec sheet on Jun 6, 2026 — ferrismowers.com.
Independent reference database. Specs compiled from manufacturer sources and normalized for comparison; verify with the manufacturer or dealer before purchase.