| Model number | GDR-11 |
| Position | Rear |
| Construction | Gear |
| Rated voltage(V) | 24/36/48 |
| Rated Power(W) | 250 |
| Weight(kg) | 2.3 |
| Reduction Ratio | 1:6.28 |
| Wheel Diameter(inch) | 16-28 |
| Rated speed(km/h) | 25-28 |
| Magnet Poles(2P) | 8 |
| Dropout(mm) | 120/135 |
| Freewheel | rear 1s |
| Brake Type | V/Disk brake |
| Operating Temperature (C) | -20---45 |
| Efficiency(%) | ≧80% |
| Color | Black/Silver |
| Cabling Route | Shaft side left |
| Noise Grade(dB) | ≤55 |
| IP Grade | IP54 |
| Salt Spary Test Standard(h) | 24/96 |
