Check this out: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&rd=1& itemq08754030&ssPageName=STRK:MEWA:IT I did not think this was possible. 41T was as small as I have heard of or seen. Even with that size you must relieve the crankarm for chain clearance. So I wrote to the seller, and he said: This 39T chainring was produced by Campagnolo solely for professional teams, as a 'granny gear' for the big Alpine mountain stages. It was never introduced to the retail market. Its 84.6mm across the holes, and was manufactured in only the few hundreds. Hence its 'hen's teeth' appeal.
That is the correct measurement for Super Record. Anyone ever heard of that before?