| SD-77DX Terra Firma | 2006 specifications |
| Engine | Cummins B4.5T, Tier 2 |
| Engine power, kW (hp) | 73,8 (99) |
| Static axle load front / rear, kg | 3 855 / 3 560 |
| Drum width, mm | 1 676 |
| Drum diameter, mm | 1 219 |
| Vibration frequency, Hz | 30,8 / 33,8 |
| Centrifugal force, kN | 143 / 104 |
| Amplitude, mm | 1,98 / 1,2 |
| Operating weight, t | 7,415 |