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TRIUMPH MODEL YEAR Chart

Triumph Pre-Unit 500 & 650

(Most motor and frame numbers match

  Triumph Unit 350/500 Motor and Frame numbers always match.
Year Engine Number   Year Engine Number
1950 From 100N (all 1950 has N a suffix)   1957 H101 -760                                
1951 101NA - 15808NA   1958 H761 - H5484
1952 15809NA - 25000NA 25000 - 32302   1959 H5485 - H11511
1953 32303 - 44134   1960 H11512 - H18611
1954 44135 - 56699   1961 H18612 - H25251
1955 56700 - 70929   1962 H25252 - H29732
1956 (70930 - 82799) ( 0100 - 0944)   1963 H29733 - H32464
1957 0945 - 011115   1964 H32465 - H35986
1958 011116 - 020075   1965 H35987 - H40527
1959 020076 - 029363   1966 H40528-H49832
1960 (029364 - 030424) (D101 - D7726)   1967 H49833 - H57082
1961 D7727 - D15788   1968 H57083 - H65572
1962 D15789 and up   1969 H65573 - H67331

 
Triumph 650 Unit (All motors and frames should match)
1963 DU1001-DU5824   1967 DU44394-DU66245
1964 DU5825-DU13374   1968 DU66246-DU85903
1965 DU13375-DU24874   1969 DU85904-DU90282
1966 DU24875-DU44393    


 

Triumph 1969 and up 650/750

 In 1969 they started a new number system. They used a 2 letter prefix for the month and year. The first letter was for the month and the second letter was for the year.

The year ran from August thru July. In 1980 the letter A appeared as a third letter in the prefix and the system continued until the last bike was built. Motor and Frame numbers always match.

LETTER MONTH MODEL YEAR   Letter Month Model
A January Aug 1978 - July 1979   K September AUG 1974-JULY-1975
B February AUG 1979-JULY 1980   N October AUG 1975-JULY 1976
C March AUG 1968-JULY 1969   P November AUG 1976-JULY 1977
D April AUG 1969-JULY 1970   X December AUG 1977-JULY 1978
E May AUG 1970-JULY 1971   KDA 1981 Models SEPT 1980-APR1981
G June AUG 1971-JULY 1972   EDA 1982 Models MAY 1981-JAN 1982
H July AUG 1972-JULY 1973   BEA 1983 Models FEB 1982-JAN 1983
J August AUG 1973-JULY 1974   T140B AEA34393 LAST bike Jan 21,1983
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