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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.

  • Bad Boy Mowers Rebel SD — commercial: daily paid use and high acreage; 54-inch deck; gas powered
  • Kubota Z724XKWNC-54 — 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. Rebel SD uses a Kohler engine; Z724XKWNC-54 uses a Kawasaki FX730V 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. Rebel SD has a 4400 Hydro-Gear® 16cc Integrated Transaxle transmission; Z724XKWNC-54 has a Parker HTG14 transmission. The transmission grade tracks duty rating and speed. Grade names are each maker's own and are not comparable across brands.
  3. Rebel SD holds 13 gal (49.2 L) of fuel; Z724XKWNC-54 holds 11.6 gal (43.9 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. Rebel SD has a 25 hp engine; Z724XKWNC-54 has a 23.5 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. Rebel SD has a published top speed of 12 mph; Z724XKWNC-54 has a published top speed of 11.2 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

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

Calculated by MowerFacts

  • Rebel SD works out to 5.2 acres/hour; Z724XKWNC-54 works out to 4.9 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 Bad Boy Mowers · more Kubota
Side-by-side specifications: Bad Boy Mowers Rebel SD vs Kubota Z724XKWNC-54
Spec Rebel SD
Bad Boy Mowers · Zero-Turn
Z724XKWNC-54
Kubota · Zero-Turn
List price dealer quotedealer quote
Engine
Power Source gas gas
Displacement 45.6 ci (747 cc) 44.3 ci (726 cc)
Engine Power 25 hp 23.5 hp
Engine Make Kohler Kawasaki FX730V
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 4400 Hydro-Gear® 16cc Integrated Transaxle Parker HTG14
Ground Speed 12 mph 11.2 mph
Drive System — Belt
Dimensions
Weight 1257 lbs (570.2 kg) 1195 lbs (542 kg)
Fuel Capacity 13 gal (49.2 L) 11.6 gal (43.9 L)

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

Z724XKWNC-54: 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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