
CaseIHModel A
CaseIH STX425QT Quadtrac
Articulated
- power
- 425 hp
- displacement
- 915 ci
- Cylinders
- 6
- Forward gears
- 16
Head to head · Articulated

Articulated
Four-Wheel Drive
How they compare
STX425QT Quadtrac is in the 38th percentile; 9R 440 is in the 32nd · 62 models
STX425QT Quadtrac is in the 78th percentile; 9R 440 is in the 47th · 61 models
STX425QT Quadtrac is in the 50th percentile; 9R 440 is in the 50th · 61 models
STX425QT Quadtrac is in the 50th percentile; 9R 440 is in the 97th · 59 models
Full comparison
| Spec | CaseIH STX425QT Quadtrac | John Deere 9R 440 | Difference |
|---|---|---|---|
| Manufacturer | CaseIH | John Deere | — |
| Model | STX425QT Quadtrac | 9R 440 | — |
| Category | Articulated | Four-Wheel Drive | — |
| Spec | CaseIH STX425QT Quadtrac | John Deere 9R 440 | Difference |
|---|---|---|---|
| Manufacturer | Cummins | John Deere | — |
| Model | QSX15 | John Deere Diesel | — |
| Power Output | 425hp | 390hp | ▲ STX425QT Quadtrac+35 hp · +9% |
| Rated RPM | 2,000RPM | 1,800RPM | ▲ STX425QT Quadtrac+200 RPM · +11% |
| Cylinders | 6 | 6 | Same |
| Displacement | 915ci | 826ci | ▲ STX425QT Quadtrac+89 ci · +11% |
| Bore | 5.4in | 5.2in | ▲ STX425QT Quadtrac+0.2 in · +4% |
| Stroke | 6.7in | 6.5in | ▲ STX425QT Quadtrac+0.2 in · +3% |
| Spec | CaseIH STX425QT Quadtrac | John Deere 9R 440 | Difference |
|---|---|---|---|
| Type | Full power shift | Full power shift | Same |
| Spec | CaseIH STX425QT Quadtrac | John Deere 9R 440 | Difference |
|---|---|---|---|
| Length | Not recorded | 313in | — |
| Width | 44in | 173in | ▲ 9R 440+129 in · +293% |
| Height | Not recorded | 147in | — |
| Operating Weight | 53,264lb | 46,800lb | ▲ STX425QT Quadtrac+6,464 lb · +14% |
| Spec | CaseIH STX425QT Quadtrac | John Deere 9R 440 | Difference |
|---|---|---|---|
| System Type | Pressure flow compensated (PFC) | Dual pump system | — |
| Steering Type | Hydrostatic power | Hydrostatic and articulated | — |
| Spec | CaseIH STX425QT Quadtrac | John Deere 9R 440 | Difference |
|---|---|---|---|
| Speed 1 | Not recorded | 1,000rpm | — |
| Spec | CaseIH STX425QT Quadtrac | John Deere 9R 440 | Difference |
|---|---|---|---|
| Hitch Category | IVN/III | IV | — |
| Hitch Position | Rear | Not recorded | — |
| Spec | CaseIH STX425QT Quadtrac | John Deere 9R 440 | Difference |
|---|---|---|---|
| Chassis Type | 4x4 (Quadtrac) | Not recorded | — |
| Drive Type | 4WD | Not recorded | — |
| Steering Type | Hydrostatic power | Hydrostatic and articulated | — |
| Brake Type | Not recorded | Wet multiple disc hydraulically actuated | — |
| Spec | CaseIH STX425QT Quadtrac | John Deere 9R 440 | Difference |
|---|---|---|---|
| Starter Type | Electric, 12 volts | Electric | — |
| Spec | CaseIH STX425QT Quadtrac | John Deere 9R 440 | Difference |
|---|---|---|---|
| Coolant | Not recorded | 14.9gal | — |
| Spec | CaseIH STX425QT Quadtrac | John Deere 9R 440 | Difference |
|---|---|---|---|
| Type | Not recorded | Cab | — |
Category context