What Year Is My Bike?
Dating your bike can be a difficult process. With this guide, it can be made much easier. All you need are the serial numbers from your machine.
Triumph Dating
Prewar Singles & Page Twin
| Year | Model | Engine Number | Frame |
| 1934 | 6/1 | 1V4 | |
| 1935 | 6/1 | 1V5 | |
| 1936 | 6/1 | 1V6 | |
| T70 | T1L6 | L | |
| T80 | T2T6 | S1 | |
| T90 | T5S6 | S11 | |
| 1937-40 | For all models the engine had the model code for a prefix plus a year number and then the serial number | ||
Singles, Twins & Tridents 1969-83
| Letter | Month | Model Year |
| A | January | Aug 1978 – July 1979 |
| B | February | Aug 1979 – July 1980 |
| C | March | Aug 1968 – July 1969 |
| D | April | Aug 1969 – July 1970 |
| E | May | Aug 1970 – July 1971 |
| G | June | Aug 1971 – July 1972 |
| H | July | Aug 1972 – July 1973 |
| J | August | Aug 1973 – July 1974 |
| K | September | Aug 1974 – July 1975 |
| N | October | Aug 1975 – July 1976 |
| P | November | Aug 1976 – July 1977 |
| X | December | Aug 1977 – July 1978 |
| KDA | 1981 Models | Sept 1980 – Apr 1981 |
| EDA | 1982 Models | May 1981 – Jan 1982 |
| BEA | 1983 Models | Feb 1982 – Jan 1983 |
| T140V | AEA34393 | Last Model Jan 21 1983 |