Rim lock size

Still running an original rim lock on my rear wheel but with each tire change I am reminded that I really need to replace it. Does anyone know the correct size for a standard size rim on a 74' 850 (drum brake). OEM does not seem to be available so I am looking at aftermarket and they come in various sizes.

My rimlock has been in a box under the bench for many years and i haven't noticed any problems.
If it were me, unless its for a concours machine, i wouldn't bother replacing it. It certainly makes roadside puncture repairs easier without the lock.

jjett said:

Does anyone know the correct size for a standard size rim on a 74' 850 (drum brake). OEM does not seem to be available so I am looking at aftermarket and they come in various sizes.

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If your Commando still has its standard WM2 rim, then you'd need a WM2 (1.85) size rim lock.

http://www.britcycle.com/Products/555Tyres.htm