Originally Posted by
rgvg
Wasn't there like a combination JIS/ISO sort of thing where one measurement was JIS and the other ISO like JIS for the cups and ISO for the race? Was a nice pdf on bf somewhere I forgot which thread it was in.
starting to suspect this. I measured 30mm for the head tube ID, top and bottom, so I’d be hesitant to put 30.2mm cups in. What should I do if I have a combo situation?