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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.

  • Grasshopper SO37 — commercial: daily paid use and high acreage; 61-inch deck; gas powered
  • Grasshopper SO34.5KW — commercial: daily paid use and high acreage; 61-inch deck; gas powered
What’s different? The 2 differences that matter most, from the published figures.
  1. SO37 uses a Vanguard engine; SO34.5KW uses a Kawasaki 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.
  2. SO37 has a 60.6 ci (993 cc) engine; SO34.5KW has a 50.2 ci (822 cc) engine, a 10.4 ci difference. Displacement is the engine's size, not its output. A larger engine is not necessarily a more powerful one.
what isn’t comparable

Not comparable

  • Engine Power: not published for SO34.5KW.
  • Weight: not published for SO34.5KW.
  • Ground Speed: not published for SO34.5KW.

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.

Add another (2 more fit): every commercial mower · more Grasshopper
Side-by-side specifications: Grasshopper SO37 vs Grasshopper SO34.5KW
Spec SO37
Grasshopper · Commercial
SO34.5KW
Grasshopper · Commercial
List price $13,365$13,365
Engine
Power Source gas gas
Engine Make Vanguard Kawasaki
Displacement 60.6 ci (993 cc) 50.2 ci (822 cc)
Engine Power 37 hp —
Cylinders 2 2
Fuel Type Gasoline Gasoline
Deck
Cutting Width 61 in (1549 mm) 61 in (1549 mm)
Drive
Transmission T6 Drive Transmission T6 Drive Transmission
Ground Speed 10.5 mph —
Dimensions
Weight 1250 lbs (567 kg) —
Fuel Capacity 13.5 gal (51.1 L) 13.5 gal (51.1 L)

Where these models differ, explained

SO37: Specs verified against the retailer listing on Jun 6, 2026 — tommysmotorsportscrossville.com.

SO34.5KW: Specs verified against the manufacturer spec sheet on Jun 6, 2026 — jfhl539zzuegfiyw.public.blob.vercel-storage.com.

Independent reference database. Specs compiled from manufacturer sources and normalized for comparison; verify with the manufacturer or dealer before purchase.

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