Hersteller im Baujahr 1981
| ID_manu | year_from | ID | Name | Name | Ort |
|---|---|---|---|---|---|
| 18 | 1.981 | 18 | Kawasaki | Kawasaki | Tokyo |
| 4 | 1.981 | 4 | Harley-Davidson | Harley-Davidson | Milwaukee |
| 5 | 1.981 | 5 | Honda | Honda | Tokyo |
| 20 | 1.981 | 20 | Suzuki | Suzuki | Hamamatsu |
| 21 | 1.981 | 21 | Yamaha | Yamaha | Iwata |
| 26 | 1.981 | 26 | Moto Guzzi | Moto Guzzi | Mandello del Lario |
| 125 | 1.981 | 125 | Ducati | Ducati | Bologna |
| 13 | 1.981 | 13 | Bimota | Bimota | Rimini |
| 6 | 1.981 | 6 | Laverda | Laverda | Bregranze |
| 27 | 1.981 | 27 | MV Agusta | MV Agusta | |
| 25 | 1.981 | 25 | Moto Morini | Moto Morini | Bologna |
| 14 | 1.981 | 14 | Benelli | Benelli | Pesaro |
| 66 | 1.981 | 66 | Sanglas | Sanglas | |
| 2 | 1.981 | 2 | BMW | BMW | München |
| 7 | 1.981 | 7 | MZ | MZ | Zschopau |
| 29 | 1.981 | 29 | Z | Zündapp | Nürnberg |
| 30 | 1.981 | 30 | Hercules | Hercules | Nürnberg |
| 140 | 1.981 | 140 | Vespa | Vespa | Pontedera |
| 64 | 1.981 | 64 | Bultaco | Bultaco | Barcelona |
| 52 | 1.981 | 52 | Cagiva | Cagiva | Varese |
| 16 | 1.981 | 16 | CZ | CZ | Strakonice |
| 415 | 1.981 | 415 | Krauser | Krauser | Pirmasens |
| 393 | 1.981 | 393 | Ducati Mototrans | Ducati Mototrans | |
| 341 | 1.981 | 341 | SWM | SWM | |
| 17 | 1.981 | 17 | Jawa | Jawa | Prag |