| Model | Genie SX-125XC |
| Working height maximum | 131 ft 2 in 40.1 m |
| Platform height maximum | 125 ft 38.1 m |
| Horizontal reach maximum | 80 ft 24.38 m |
| Below ground reach | 8 ft 10 in 2.69 m |
| Platform length -8 ft model | 3 ft 0.91 m |
| Platform length -6 ft model | 2 ft 6 in 0.76 m |
| Platform width -8 ft model | 8 ft 2.44 m |
| Platform width -6 ft mode | 6 ft 1.83 m |
| Height -stowed | 10 ft 3.05 m |
| Length -stowed | 46 ft 9 in 14.25 m |
| Length -transport (jib tucked under) | 40 ft 12.19 m |
| Width -axles retracted | 8 ft 2 in 2.49 m |
| Width-axles extended | 12 ft 11 in 3.94 m |
| Wheelbase | 13 ft 6 in 4.11 m |
| Ground clearance -center | 15 in 38.1 cm |
| Maximum lift capacity -unrestricted | 660 lb 300 kg |
| -restricted | 1,000 lb 454 kg |
| Platform rotation | 160° |
| Vertical jib rotation -up/down | 135° |
| Turntable rotation | 360° continuous |
| Turntable tailswing -axles retracted | 1 ft 10 in 0.56 m |
| -axles extended | 3 ft 4 in 1.02 m |
| Drive speed-stowed | 3.0 mph 4.9 km/h |
| -raised (below 125 ft) | 0.38 mph 0.6 km/h |
| Gradeability -stowed | 40% |
| Turning radius -axle retracted | inside |
| outside | 32 ft 8 in 9.96 m |
| Turning radius -axle extended | inside |
| outside | 20 ft 3 in 6.17 m |
| Controls | 12 V DC proportional |
| Tires -RT lug | 445D50/710 HD |
| Power source | Deutz TD2.9 L4, 74 hp (55 kW), Tier 4 final Deutz TD2011L04i, 74 hp (55 kW), Tier 4 initial Perkins 854F-E34T, 74 hp (55 kW), Tier 4 final Perkins 1104D-44T, 74 hp/83 hp (55 kW/62 kW), Tier 3 |
| Auxiliary power unit | 12 V DC |
| Hydraulic tank capacity | 55 gal 208 L |
| Fuel tank capacity | 40 gal 151 L |
| Weight 4WD | 45,636 lbs 20,700 kg |
