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Triumph Motorcycle Engine & Frame Serial Numbers

Triumph Model Designation
PREFIXMODEL
T140V750cc Bonneville
T140C750CC Trophy
T140E750cc Bonneville
TR7V750cc Tiger
TR7RV750cc Tiger (5 speed)
T120R650cc Bonneville
T120RV650cc Bonneville (5 speed)
TR6C650cc Trophy
TR6CV650cc Trophy (5 speed)
TR6R650cc Tiger
TR6RV650cc Tiger (5 speed)
T100R500cc Dual Carburetter/Daytona
T100C500cc single carburetor/Tiger or Trophy
T100C500cc single carburetor/Tiger 100 or Trophy
T100S500cc Tiger 100
T90350cc Tiger90
6T650cc Thunderbird
T150750cc Trident
T150V750cc Trident (five speed)
T160V750cc Trident (five speed/electric start)

Triumph Twin Serial Numbers 1950 - 1969
YEAR Unit 350 & 500ccPre Unit 500 & 650cc
1950 ------ from 100 N
1951 ------ 101NA - 15808NA
1952 ------ 15809NA - 2500NA then 25000 - 32302
1953 ------ 32303 - 44134
1954 ------ 44135 - 56699
1955 ------ 56700 - 82799
1956 ------70930 - 011115 then 0100 - 0944
1957 H101 - H760 0945 - 011116
1958 H761 - H5484011116 - 020075
1959 H5484 - H11511 020076-029363
1960 H11512 - H18611029364 - 030424 then D101 - D7726
1961 H18612 - H25251D7727 - D15788
1962 H25252 - H29732D15789 on Unit 650CC
1963 H29733 - H32464DU101 - DU5824
1964 H32465 - H35986DU5825 - DU13374
1965 H35987 - H40527DU13375 - DU24874
1966 H40528 - H49832DU24875 - DU44393
1967 H49833 - H57082DU44394 - DU66245
1968 H57083 - H65572DU66246 - DU85903
1969 H65573 - H67331DU85904 - DU90282

Triumph Twin Serial Numbers 1969 - 1983
The models produced after 1969 contained the same prefix designators listed above, that indicated the model type, but the numbers were changed. A new coding system (numbers) was introduced using a two letter prefix for the month and model season year, followed by a number which began at 00100 for each model year and ran on irrespective of the model it was stamped on. The model season started in August.
A January
B February
C March
D April
E May
G June
H July
J August
K September
N October
P November
X December
Letter Months Designated Year
C October 1968 - July 19691969
D August 1969 - July 19701970
E October 1970 - July 19711971
G August 1971 - July 1972 1972
H August 1972 - June 19731973
J August 1973 - October 1974 1974
K April 1974 - June 1975 1975
N July 1975 - June 1976 1976
P June 1976 - August 1977 1977
X July 1977 - August 1978 1978
A July 1978 - November 1979 1979
B August 1979 - July 1980 1980
DA August 1979 - July 1980 1980
DA September 1980 - April 1981 1981
DA May 1981 - February 1982 1982
EA February 1982 - January 1983 1983

3 thoughts on “Triumph Motorcycle Engine & Frame Serial Numbers”

  • Hi, I'm looking for exhaust spigots for my 72 T100r, do you sell these?

    Reply
  • I bought a 1979 triumph bonneville 750. Its original but a basket case. Im in need of some parts. Nuts n bolts, spacers.

    Reply
  • i bought a 1959 650 truimph title says its a i959 it has iron head single carb title 5600201

    does not have org frame it has a
    WRF military frame i what is motor?

    Reply
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