Matchless G12
650 Twin

MATCHLESS G12 BACKGROUND
Just prior to World War II, Triumph rocked the world with their seminal 500 Speed Twin, but the world had to wait for the war to end before the rest of the industry would have a chance to catch up. At war's end, BSA was first to respond with their own 500cc vertical twin, the 1946 A7. Norton was next, followed by Matchlessfollowed in 1949, Norton with the Model 7, and Matchless with their G9. Of course, every Matchless came with a matching AJS back then (and they called them "Matchless"), in this case the AJS Model 20. Triumph being the first one to the party, they were also the first to start upping the ante in the horsepower-wars. In 1950, they bored and stroked out their own 500 to make the world's first Triumph 650, the 6T Thunderbird, and most of the rest of the industry followed suit the best they could. Matchless and AJS countered in kind, bumping their 500's displacement up to 650cc in 1958, along with new names, the G12 and the AJS Model 31. These were followed in turn by a larger version still, the 750cc Matchless G15 and AJS Model 33 in 1963. AMC actually built a very good twin that, on paper, compared well with the popular twins from Triumph, BSA and Norton. But the big sales they were hoping for, and so desperately needed never materialized. By 1967 the AMC empire was crumbling. Only Norton survived.

Matchless G12 YEAR-BY-YEAR

1960 G12
646cc air-cooled parallel twin
Sister bike: AJS Model 31



1961 G12
646cc air-cooled parallel twin
Sister bike: AJS Model 31



1963 G12CS
646cc air-cooled parallel twin
Sister bike: AJS Model 31



1964 G12
646cc air-cooled parallel twin
Sister bike: AJS Model 31



1965 G12CSR
646cc air-cooled parallel twin
Sister bike: AJS Model 31



1966 G12
646cc air-cooled parallel twin
Sister bike: AJS Model 31
Last year of production, as AMC collapses around it.



Check out these MATCHLESS BOOKS





Matchless: The Complete Story



Matchless, once the largest British motorcycle manufacturer



AJS and Matchless Post-War Singles and Twins: The Complete Story



Motorcycle Apprentice: Matchless - in name & reputation (Classic Reprint)



History of Matchless Motorcycles



Matchless and Ajs Restoration



BOOK OF THE MATCHLESS 350 & 500cc SINGLES 1955-1966



AJS and Matchless: The Post-war Models



AJS and Matchless Gold Portfolio 1945-1966



Illustrated Ajs and Matchless Buyer's Guide (Illustrated Buyer's Guide)



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Last updated 12/9/17

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NEW SECTIONS:

AJS Motorcycles

NEW PAGES
added this month:

* Helmet Features 2018
* AJS Motorcycles
* 1961 AJS Model 31
* 1959 AJS Model 16
* 1927 AJS Model H4
* 1959 AJS Model 31 CSR
* 1946 AJS Model 18
* 1964 AJS Model 16
* 1953 AJS Model 18
* 1950 AJS 7R Boy Racer
* 1933 BSA B33
* John's British Cycles
* 1961 Matchless G80 Typhoon
* 1958 BSA Gold Star
* Ariel Twins
* 1959 Ariel Huntmaster
* 1964 Triumph Thunderbird
* 1961 Triumph Cub
* 1959 Velocette Venom
* 1956 Triumph TR5R
* 1955 Vincent Black Prince
* 1951 Triumph Speed Twin
* 1958 Ariel Huntmaster
* 1954 Triumph T15 Terrier
* Military Motorcycles
* 1941 Harley-Davidson WLA
* 1942 Harley-Davidson WLA
* 1999 Harley-Davidson MT500
Enjoy. More coming soon...