BSA M24 parts for sale and wanted

Please let me know if you have any pre-war M series bikes or parts for sale or wanted.
Call back regularly as I update the page.

M24 Parts for sale: See below for further details

1938 Oil tank mounting rubber grommets (Set of 4)

1939 KM24 Silencer...SOLD OUT

M24 Cylinder Head Gaskets

M24 Engine Gaskets

1938 M24 cylinder barrels - NEW UK made

M24 82mm Cylinder Liners ----- SOLD OUT

M24 Rear Brake drums

Oil tank caps - all 37/38/39 M-series - New repro.  

 1939 M23/M24 Rear Number plates - SOLD OUT

1939 KM23/24 Fuel tank badges - New repro.   

M24 82mm STD Pistons ...….SOLD OUT

Gearbox parts - all 37/38/39 M-series  

1939 KM24 Engine

Engine No KM24 309, fully restored and reconditioned in my workshop in 2013-4, and unused since. Original magneto also reconditioned. Stored in warm dry conditions, regularly turned over and cylinder lubricated. Full list of new parts available.   No Longer available

 1938 Oil tank mounting grommets

New from original pattern. Will also fit all other 1937-8 B- & M-series bikes.
BSA part Nos 66-8324 or 66-8326

Set of 4 rubber grommets £12 - Available from Jeff Hunter (the rubber man) at  He does all sorts of rubber parts including footrest rubbers, tank kneegrips, handlebar grips etc

1939 KM24 Silencer

Made by Armours using original pattern. Excellent quality chrome plating.     £120 plus postage

BSA M24 Cylinder Head Gaskets

Made to original pattern                                                                    £30 each plus postage

M24 Engine Gaskets

I have for sale various new gaskets for the M24 engine which have been unavailable for years. These are top quality, made in England from original patterns.
 Prices: Rocker box gaskets - 1 set of 3 (two of No4 & one of No5)  £12       
              Cylinder base gasket ( No2)                           £3.50
              Tappet cover gasket   (No3)                         £2.50
              Rocker box cover gasket  (No1)                 £3.00                         
All including UK postage. Postage cost covers any number of gaskets.
 Postage to Europe £1.50, Rest of the world £2.50.
 Other gaskets, such as timing cover, KM24 tappet cover & the large cork primary case seal are available from UK BSA dealers. 


with small 2 screw tappet cover.
See photos below
Standard 82mm bore
Excellent quality, cast and machined in Birmingham UK
£1500 including postage

M24 Cylinder Liners

New British made liner for Standard 82mm bore piston

 £150 including world wide postage        SOLD OUT BUT CAN GET MORE IF DEMAND                                                                                     EXISTS

M24 Rear Brake Drums

UK Manufacture.  Correct ribbed 42T type Part No 66-6107

 £100 each including UK postage    

BSA M24 Oil Tank Caps

Available from Nigel Berry, in Victoria, Australia. They are made with the correct size thread and fit perfectly. Contact  Nigel on for further information


These will fit all 1939 BSA M20/21, M23 and M24, and B-series bikes. BSA Part Number 65-6919 or 65-6803.

UK made in mild steel using an original 1939 pattern, with correct curved top mounting plate.                                Will need two 1/4in holes drilled in top mounting to suit your rear mudguard, 3 holes for Lucas stop/tail light and paint.  

Selling at cost - £150 each plus postage 

1939 KM23 & KM24 Tank Badges

New, excellent quality, well finished.                          
Made in Germany in brass or aluminium. To suit Gold Star or Silver Star

Contact Hubert Runte at for more information and pictures.

Gearbox parts - all 37/38/39 M-series

I have a good stock of parts for pre-war M-series gearboxes - please Email me with your requirements