Pre-war BSA M24 Parts

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M24 history
Surviving M24s
M24 Gold Star gallery
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M24 Spares
For Sale & Wanted
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                           Factory drawing of 1937 Pre-production M24 engine
As we are dealing with bikes that are 80+ years old, New old Stock
spares are in very short supply, and anything available tends to be expensive.
M24 specific items in good condition, such as Cylinder heads & Barrels trade for £1000+, and some cycle parts such as rear stands and fork yokes can sell for up to £200+.
Many cycle parts were common to other 1937-40 pre-war M-series models, including the war time WDM20, and one or two specialist dealers still have stocks of new WD parts.

Copies of the original parts books for 1938 & 39 BSA models are
an invaluable asset when looking for spare parts. Reprints are still
available from as well as copies of
other useful BSA literature. These will provide illustrations of all
parts with original part numbers. in Battersea, SW London provide a
useful downloadable catalogue and price list for the WD M20 and
keep a good stock of suitable, and often new old stock parts. in Suffolk, UK also keep some pre-war BSA
parts. Again you can download a very comprehensive catalogue
full of useful drawings and part numbers for early Gold Stars, and
price list. based in Germany have WDM20 and some 1930s spares, again with a comprehensive online catalogue
I keep a stock of parts and may be able to help.

M24 Petrol tanks made in India - BEWARE - These may look good from the photos, but one recently sold to Australia had the front brackets in the wrong position, mounting holes for kneegrips & badges wrongly spaced, and it did not fit properly. They may be cheap, but you get what you pay for.

click on thumbnail for full size picture
click on thumbnail for full size picture

1938-40 NEW UK made finned rear brake drum/sprocket, as fitted to all M24s, and also 1939 M23 Silver Star, and M20 & M21 Deluxe models.   BSA Part No 66-6107.   The studs which locate in the hub are 0.3mm oversize, to allow for wear in the hub locating holes. The holes may need light reaming for a good fit.
£120 including Postage. 

New 1938 JM24 Cylinder barrels. 
These are now available, made in Birmingham UK.
See For Sale & wanted page

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