Vintage Supply - AJS Model 20

1955 AJS Model 20 - 500cc Twin


The Model 20 was produced from 1948-1961 and was the beginning of AMC's twin cylinder motorcycles. Always in the wake of the speed and beauty of the Triumph twins, AMC tried their best with the 20 (AJS) and the G9 (Matchless).  The AJS twins may not have been as fast or pretty as the Triumphs but they certainly had a reputation for being well-handling and reliable machines. By the time the 500 twins were discontinued in 1961 there had been few major changes to the bike. In 1950 the bikes received an extra clutch spring, giving it 5 rather than 4. In 1951, new rear suspension was introduced, the famous "jampots". In 1952 a new gearbox was introduced. In 1952, due to government restrictions, AJS could not produce the all chrome fuel tanks, so they switched to an all-black paint scheme. But don't worry! The chrome tanks were reintroduced in 1954.


This particular bike was restored in the mid 2000's and still looks and runs great. Since the restoration, it has only been ridden 700 miles (according to the NOS speedometer). Everything has either been restored or replaced to exact original condition. Clear title in hand. 


Currently the Model 20 is being featured in an antique motorcycle exhibit in the Ohr-O'Keefe Museum of Art.  It will be there until the end of February.