| M164-G62 | Reduction gearbox M164-G62, ratio 6.4:1 | |
| MTP | Multiplier gearbox MTP, ratio 1:2.5 | |
| RBC | Reduction gearbox RBC, ratio 2.176:1 | |
| RNK | Reduction gearbox RNK, ratio 2.176:1 | |
| RP | Reduction gearbox RP, ratio 2.3:1 | |
| RV | Reduction gearbox RV, ratio 1.48:1, 1.82:1 or 2.21:1 | |
