Engine Number List

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