Triumph Model Year Chart

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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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