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.
- Ariens RAZOR 21 SELF PROPELLED — residential: typical home lawns; 21-inch deck; gas powered
- Cub Cadet SC300C Lawn Mower — residential: typical home lawns; 21-inch deck; gas powered
What’s different? The 5 differences that matter most, from the published figures.
- RAZOR 21 SELF PROPELLED uses a Briggs & Stratton EXi 725 engine; SC300C Lawn Mower uses a Cub Cadet® 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.
- RAZOR 21 SELF PROPELLED has General Transmission® MA 300 drive; SC300C Lawn Mower has FWD drive.
- RAZOR 21 SELF PROPELLED cuts from 1 in (25 mm) to 4 in (102 mm); SC300C Lawn Mower cuts from 1.3 in (32 mm) to 3.7 in (95 mm). The cut-height range is the shortest and tallest cut the deck offers. Most lawns are kept well inside it.
- RAZOR 21 SELF PROPELLED holds 0.3 gal (1.1 L) of fuel; SC300C Lawn Mower holds 0.3 gal (1.3 L) of fuel, a 0 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.
- RAZOR 21 SELF PROPELLED lists at $449; SC300C Lawn Mower lists at $479, a $30 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
- Weight: not published for SC300C Lawn Mower.
- Ground Speed: not published for SC300C Lawn Mower.
- Blades: not published for SC300C Lawn Mower.
- Deck Material: not published for RAZOR 21 SELF PROPELLED.
- Start Type: not published for RAZOR 21 SELF PROPELLED.
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 | RAZOR 21 SELF PROPELLED Ariens · Push / Walk-Behind |
SC300C Lawn Mower Cub Cadet · Push / Walk-Behind |
|---|---|---|
| List price | $449 | $479 |
| Engine | ||
| Power Source | gas | gas |
| Displacement | 9.9 ci (163 cc) | 9.9 ci (163 cc) |
| Start Type | — | Recoil |
| Engine Make | Briggs & Stratton EXi 725 | Cub Cadet® |
| Deck | ||
| Cutting Width | 21 in (533 mm) | 21 in (533 mm) |
| Min Cut Height | 1 in (25 mm) | 1.3 in (32 mm) |
| Max Cut Height | 4 in (102 mm) | 3.7 in (95 mm) |
| Deck Material | — | Steel |
| Blades | 1 | — |
| Cut Positions | 7 | 6 |
| Blade Tip Speed | 17001 ft/min (5182 m/min) | — |
| Drive | ||
| Ground Speed | 3.7 mph | — |
| Drive System | General Transmission® MA 300 | FWD |
| Dimensions | ||
| Weight | 77 lbs (34.9 kg) | — |
| Fuel Capacity | 0.3 gal (1.1 L) | 0.3 gal (1.3 L) |
| General | ||
| Warranty | 3 yr | 3 yr |
RAZOR 21 SELF PROPELLED: Specs verified against the retailer listing on Jun 7, 2026 — farmandhomesupply.com.
SC300C Lawn Mower: Specs verified against the manufacturer spec sheet on Jun 6, 2026 — cubcadet.com.
Independent reference database. Specs compiled from manufacturer sources and normalized for comparison; verify with the manufacturer or dealer before purchase.