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.
- Gravely PRO-STANCE ULTRA 60 FX1000 EFI — commercial: daily paid use and high acreage; 60-inch deck; gas powered
- Spartan Spartan SRT-XD — commercial: daily paid use and high acreage; 61-inch deck; gas powered
What’s different? The 5 differences that matter most, from the published figures.
- PRO-STANCE ULTRA 60 FX1000 EFI holds 16 gal (60.6 L) of fuel; Spartan SRT-XD holds 9.5 gal (36 L) of fuel, a 6.5 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.
- PRO-STANCE ULTRA 60 FX1000 EFI has a Fabricated X-Factor® 3 deck; Spartan SRT-XD has a 6" Deep, Reinforced 7 Gauge Full-Floating Deck deck.
- PRO-STANCE ULTRA 60 FX1000 EFI cuts from 1.5 in (38 mm) to 5.5 in (140 mm); Spartan SRT-XD cuts from 1.5 in (38 mm) to 4.8 in (121 mm). The cut-height range is the shortest and tallest cut the deck offers. Most lawns are kept well inside it.
- PRO-STANCE ULTRA 60 FX1000 EFI weighs 1,364 lbs (618.7 kg); Spartan SRT-XD weighs 1,290 lbs (585.1 kg), a 74 lbs difference. Operating weight bears on trailer payload, ramps and soft turf. On its own it says nothing about build quality. What PRO-STANCE ULTRA 60 FX1000 EFI's weight means for a trailer ›
- PRO-STANCE ULTRA 60 FX1000 EFI has a published top speed of 12.5 mph; Spartan SRT-XD has a published top speed of 13 mph, a 0.5 mph difference. Top speed is the maker's maximum in transport. Mowing speed is lower and depends on grass, terrain and the deck.
calculated figures and what isn’t comparable
Calculated by MowerFacts
- PRO-STANCE ULTRA 60 FX1000 EFI works out to 6.1 acres/hour; Spartan SRT-XD works out to 6.4 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
- Warranty: not published for PRO-STANCE ULTRA 60 FX1000 EFI.
- Fuel Type: not published for Spartan SRT-XD.
- Deck Material: not published for Spartan SRT-XD.
- Drive System: not published for Spartan SRT-XD.
- Discharge: not published for Spartan SRT-XD.
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 | PRO-STANCE ULTRA 60 FX1000 EFI Gravely · Commercial |
Spartan SRT-XD Spartan · Commercial |
|---|---|---|
| List price | $15,249 | $15,299 |
| Engine | ||
| Power Source | gas | gas |
| Engine Make | Kawasaki® | Kawasaki |
| Displacement | 61 ci (999 cc) | 61 ci (999 cc) |
| Engine Power | 38.5 hp | 38.5 hp |
| Engine Model | FX1000 EFI | — |
| Fuel Type | Gas | — |
| Deck | ||
| Cutting Width | 60 in (1524 mm) | 61 in (1549 mm) |
| Deck Material | 7 ga | — |
| Deck Construction | Fabricated X-Factor® 3 | 6" Deep, Reinforced 7 Gauge Full-Floating Deck |
| Deck Gauge | 7 | — |
| Min Cut Height | 1.5 in (38 mm) | 1.5 in (38 mm) |
| Discharge | Side | — |
| Max Cut Height | 5.5 in (140 mm) | 4.8 in (121 mm) |
| Drive | ||
| Ground Speed | 12.5 mph | 13 mph |
| Drive Tire Size | — | 24x14-R12 Radial |
| Reverse Speed | 5 mph | — |
| Drive System | Parker HTG | — |
| Dimensions | ||
| Weight | 1364 lbs (618.7 kg) | 1290 lbs (585.1 kg) |
| Fuel Capacity | 16 gal (60.6 L) | 9.5 gal (36 L) |
| Length | — | 84 in (2134 mm) |
| Height | — | 75 in (1905 mm) |
| Commercial / Pro | ||
| Frame Construction | — | 1.5" by 3" Powder Coated Fusion-Bonded Solid Steel Bridge Frame |
| Seat Type | — | Smart Ride Technology w/ full suspension seat - adjustable TecsPak Elastomer supports - 360 degree floating seat platform - indepentant rear frame section suspended by Winamac coil springs |
| General | ||
| Warranty | — | 3 yr |
Where these models differ, explained
PRO-STANCE ULTRA 60 FX1000 EFI: Specs verified against the manufacturer spec sheet on Jun 6, 2026 — gravely.com.
Spartan SRT-XD: Specs verified against the manufacturer spec sheet on Jun 6, 2026 — joinspartannation.com.
Independent reference database. Specs compiled from manufacturer sources and normalized for comparison; verify with the manufacturer or dealer before purchase.