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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.

  • Kubota Z422KWNC-54 — commercial: daily paid use and high acreage; 54-inch deck; gas powered
  • Kubota Z242KW-48 — commercial: daily paid use and high acreage; 48-inch deck; gas powered
What’s different? The 5 differences that matter most, from the published figures.
  1. Z422KWNC-54 uses a Kawasaki FS730V engine; Z242KW-48 uses a Kawasaki FR651V 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. Z422KWNC-54 has a Hydro-Gear Commercial ZT-3600 transmission; Z242KW-48 has a Hydro-Gear ZT-3100 transmission. The transmission grade tracks duty rating and speed. Grade names are each maker's own and are not comparable across brands.
  3. Z422KWNC-54 holds 6.8 gal (25.7 L) of fuel; Z242KW-48 holds 4.3 gal (16.3 L) of fuel, a 2.5 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.
  4. Z422KWNC-54 has a published top speed of 10 mph; Z242KW-48 has a published top speed of 8 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.
  5. Z422KWNC-54 has a 54 in (1,372 mm) deck; Z242KW-48 has a 48 in (1,219 mm) deck, a 6 in difference. Deck width sets how much grass each pass covers. Mowing time also depends on ground speed, turns and obstacles, so a wider deck alone does not fix the job's length. Time both decks on your own lawn ›
2 more differences, calculated figures and what isn’t comparable

Other verified differences

  • Z422KWNC-54 has a 24 hp engine; Z242KW-48 has a 21.5 hp engine, a 2.5 hp difference.
  • Z422KWNC-54 weighs 918 lbs (416.4 kg); Z242KW-48 weighs 844 lbs (382.8 kg), a 74 lbs difference.

Calculated by MowerFacts

  • Z422KWNC-54 works out to 4.4 acres/hour; Z242KW-48 works out to 3.1 acres/hour, a 1.3 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

  • Deck Material: not published for Z422KWNC-54.

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 zero-turn mower · more Kubota
Side-by-side specifications: Kubota Z422KWNC-54 vs Kubota Z242KW-48
Spec Z422KWNC-54
Kubota · Zero-Turn
Z242KW-48
Kubota · Zero-Turn
List price dealer quotedealer quote
Engine
Power Source gas gas
Displacement 44.3 ci (726 cc) 44.3 ci (726 cc)
Engine Power 24 hp 21.5 hp
Engine Make Kawasaki FS730V Kawasaki FR651V
Fuel Type Gasoline Gasoline
Deck
Cutting Width 54 in (1372 mm) 48 in (1219 mm)
Deck Material — 10Ga
Deck Gauge — 10
Drive
Transmission Hydro-Gear Commercial ZT-3600 Hydro-Gear ZT-3100
Ground Speed 10 mph 8 mph
Drive Tire Size 24 x 12 -14, LP 22 x 10 - 14
Drive System Belt Belt
Dimensions
Weight 918 lbs (416.4 kg) 844 lbs (382.8 kg)
Fuel Capacity 6.8 gal (25.7 L) 4.3 gal (16.3 L)

Z422KWNC-54: Specs verified against the manufacturer spec sheet on Jun 6, 2026 — kubotausa.com.

Z242KW-48: Specs verified against the manufacturer spec sheet on Jun 6, 2026 — kubotausa.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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