AJS & Matchless Owners Club

East Suffolk Section

Technical Tip (20) Dating a Post-War Burman Gearbox

If you are viewing a basket-case or need to check whether a bike all started life together, it is useful to know that all Burman boxes carry a date identification.
Before 1952, the stamping for boxes starts with “G”. The later B52 boxes after 1952 start with “GB” .
The following number stamped on the box indicates the year it was built and the letter shows the month. Remember, though, production of the following year’s models always started after Plumstead’s summer holiday break, so a 1954 model could get a September ‘53 box
To check which model a box was originally fitted to, refer to Christian’s Archives-“Burman Transmission” (via LINKS)