| Model | GX390 |
| Engine Type | Forced Air-Cooled 4 Stroke, Single Cylinder, OHV |
| Bore x Stroke (mm) | 88 x 64 |
| Displacement (cm³) | 389 |
| Compression Ratio | 8.5 : 1 |
| Max Power Output | 13HP / 3600 RPM |
| Ignition System | Transistor |
| Starting System | Recoil |
| Engine Oil Capacity(L) | 1.1 |
| Fuel Tank Capacity(L) | 6.5 |
| Net Weight (kg) | 34 |
TIGMAX GX390 Engine
