Engine & frame numbers for Triumph Junior motorcycles, 1913 to 1923

Engine & frame numbers for Triumph Junior motorcycles, 1913 to 1923

I have compiled a series of tables to show the generally accepted information on the engine and frame numbers for Triumph motorcycles. This table shows data specifically for the vintage and veteran Triumph Junior, two stroke,  motorcycles.

Triumph Junior, 2-stroke models, 1913 – 1923

Year(s) Engine numbers Frame numbers
1913 01 to 109 194877 to 194883
1914 110 to 790 256191 to 256876
1915 791 to 1885 256879 to 257970
1916 1886 to 2487 257971 to 258534
1917-18 2488 to 2620 258535 to 258726
1919 2621 to 3660 258727 to 259534
1920 3661 to 5928 259535 to 600475
1921 5929 to 7896 600476 to 603029
1922 7897 to 8364 602562 to 603029
1923 8365 to 10550 603030 to 651000

Note: 250cc begins at #8501

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