I posted this earlier, but I can't see it now on the forum (Henk, take note). So here it is again:


Burton Bike Bites has sent me details of new clutch chain wheels for M-series bikes using single-spring clutches.

Here's a link:

http://sumpmagazine.com/classicbikenews/news-october-2014.htm#bsa-m-series-clutch

If anyone knows what other BSAs they'll fit (if any), I'd be interested to know. At present, I've listed them as suitable for wartime M20s/M21s with dry clutches, and later AA bikes. Also suitable for M22s and M23s. Is that correct?

email (option): dannydefazio@sumpmagazine.com