To determine the year, take the first digit and add it to the end of 197. For example, if the first digit is a “3” then the year is 1973.
For more information about these numbers, please reference the Production Year Guide.
Year | Type 51 (125cc) | Serial Number |
5 | 51 | 431 |
6 | 51 | 1008 |
Year | Type 52 (175cc) | Serial Number |
2 | 52 | 125 |
2 | 52 | 140 |
2 | 52 | 566 |
2 | 52 | 951 |
2 | 52 | 1668 |
2 | 52 | 2016 |
2 | 52 | 2183 |
2 | 52 | 2652 |
3 | 52 | 2917 |
3 | 52 | 4068 |
3 | 52 | 4727 |
3 | 52 | 4957 |
3 | 52 | 5190 |
4 | 52 | 5596 |
4 | 52 | 5605 |
4 | 52 | 5740 |
4 | 52 | 5782 |
4 | 52 | 5820 |
4 | 52 | 6144 |
4 | 52 | 6219 |
4 | 52 | 6515 |
4 | 52 | 6713 |
4 | 52 | 6724 |
4 | 52 | 6840 |
4 | 52 | 7140 |
4 | 52 | 7316 |
4 | 52 | 7345 |
4 | 52 | 7393 |
4 | 52 | 7508 |
4 | 52 | 7587 |
5 | 52 | 7892 |
6 | 52 | 8597 |
7 | 52 | 9189 |
7 | 52 | 9269 |
8 | 52 | 10796 |
8 | 52 | 10918 |
9 | 52 | 11451 |
Year | Type 54 (250cc) | Serial Number |
3 | 54 | 158 |
3 | 54 | 341 |
3 | 54 | 401 |
3 | 54 | 545 |
3 | 54 | 1262 |
3 | 54 | 1366 |
3 | 54 | 1415 |
3 | 54 | 1422 |
3 | 54 | 1960 |
3 | 54 | 2069 |
3 | 54 | 2499 |
3 | 54 | 3010 |
4 | 54 | 2708 |
4 | 54 | 3420 |
4 | 54 | 4251 |
4 | 54 | 4344 |
4 | 54 | 4586 |
4 | 54 | 4647 |
4 | 54 | 4652 |
5 | 54 | 7325 |
5 | 54 | 8225 |
5 | 54 | 8586 |
5 | 54 | 10346 |
5 | 54 | 10520 |
6 | 54 | 9764 |
6 | 54 | 10387 |
6 | 54 | 10407 |
6 | 54 | 10577 |
6 | 54 | 10661 |
6 | 54 | 11444 |
6 | 54 | 11794 |
6 | 54 | 12031 |
6 | 54 | 12751 |
6 | 54 | 12751 |
7 | 54 | 13324 |
7 | 54 | 13688 |
7 | 54 | 13733 |
7 | 54 | 13780 |
7 | 54 | 13958 |
7 | 54 | 15059 |
7 | 54 | 15322 |
7 | 54 | 15510 |
7 | 54 | 15701 |
8 | 54 | 18268 |
8 | 54 | 19065 |
9 | 54 | 22709 |
Year | Type 55 (400cc) | Serial Number |
4 | 55 | 164 |
4 | 55 | 372 |
4 | 55 | 862 |
4 | 55 | 990 |
4 | 55 | 1098 |
4 | 55 | 1214 |
6 | 55 | 2939 |
6 | 55 | 3685 |
6 | 55 | 4230 |
8 | 55 | 6870 |
8 | 55 | 7178 |
8 | 55 | 7529 |