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

YearModelEngine NumberFrame
19346/11V4 
19356/11V5 
19366/11V6 
 T70T1L6L
 T80T2T6S1
 T90T5S6S11
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

LetterMonthModel Year
AJanuaryAug 1978 – July 1979
BFebruaryAug 1979 – July 1980
CMarchAug 1968 – July 1969
DAprilAug 1969 – July 1970
EMayAug 1970 – July 1971
GJuneAug 1971 – July 1972
HJulyAug 1972 – July 1973
JAugustAug 1973 – July 1974
KSeptemberAug 1974 – July 1975
NOctoberAug 1975 – July 1976
PNovemberAug 1976 – July 1977
XDecemberAug 1977 – July 1978
KDA1981 ModelsSept 1980 – Apr 1981
EDA1982 ModelsMay 1981 – Jan 1982
BEA1983 ModelsFeb 1982 – Jan 1983
T140VAEA34393Last Model Jan 21 1983