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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 Z724XKWNC-54 — commercial: daily paid use and high acreage; 54-inch deck; gas powered
  • Bad Boy Mowers Rebel SD — 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.
  1. Z724XKWNC-54 uses a Kawasaki FX730V engine; Rebel SD uses a Kohler 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. Z724XKWNC-54 has a Parker HTG14 transmission; Rebel SD has a 4400 Hydro-Gear® 16cc Integrated Transaxle transmission. The transmission grade tracks duty rating and speed. Grade names are each maker's own and are not comparable across brands.
  3. Z724XKWNC-54 holds 11.6 gal (43.9 L) of fuel; Rebel SD holds 13 gal (49.2 L) of fuel, a 1.4 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. Z724XKWNC-54 has a 23.5 hp engine; Rebel SD has a 25 hp engine, a 1.5 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.
  5. Z724XKWNC-54 has a published top speed of 11.2 mph; Rebel SD has a published top speed of 12 mph, a 0.8 mph difference. Top speed is the maker's maximum in transport. Mowing speed is lower and depends on grass, terrain and the deck.
2 more differences, calculated figures and what isn’t comparable

Other verified differences

  • Z724XKWNC-54 weighs 1,195 lbs (542 kg); Rebel SD weighs 1,257 lbs (570.2 kg), a 62 lbs difference.
  • Z724XKWNC-54 has a 44.3 ci (726 cc) engine; Rebel SD has a 45.6 ci (747 cc) engine, a 1.3 ci difference.

Calculated by MowerFacts

  • Z724XKWNC-54 works out to 4.9 acres/hour; Rebel SD works out to 5.2 acres/hour, a 0.3 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

  • Fuel Type: not published for Rebel SD.
  • Deck Material: not published for Z724XKWNC-54.
  • Drive System: not published for Rebel SD.

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 · more Bad Boy Mowers
Side-by-side specifications: Kubota Z724XKWNC-54 vs Bad Boy Mowers Rebel SD
Spec Z724XKWNC-54
Kubota · Zero-Turn
Rebel SD
Bad Boy Mowers · Zero-Turn
List price dealer quotedealer quote
Engine
Power Source gas gas
Displacement 44.3 ci (726 cc) 45.6 ci (747 cc)
Engine Power 23.5 hp 25 hp
Engine Make Kawasaki FX730V Kohler
Fuel Type Gasoline —
Deck
Cutting Width 54 in (1372 mm) 54 in (1372 mm)
Min Cut Height 1 in (25 mm) 1 in (25 mm)
Max Cut Height 5 in (127 mm) 5 in (127 mm)
Deck Material — 1/4" or 3-Gauge Thick Solid Steel
Deck Gauge — 3
Drive
Transmission Parker HTG14 4400 Hydro-Gear® 16cc Integrated Transaxle
Ground Speed 11.2 mph 12 mph
Drive System Belt —
Dimensions
Weight 1195 lbs (542 kg) 1257 lbs (570.2 kg)
Fuel Capacity 11.6 gal (43.9 L) 13 gal (49.2 L)

Z724XKWNC-54: Specs verified against the manufacturer spec sheet on Jun 6, 2026 — kubotausa.com.

Rebel SD: Specs verified against the manufacturer spec sheet on Jun 6, 2026 — badboycountry.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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