Does the nervex have iso threading on the headset also?
I am pretty much sure is JIS. I've tried a 27mm crown race on the forks and almost went in all the way hand tight, the 26.4mm I have, not so much. Also the majority of British frames pre 1980's were JIS, so it does make sense.
@ElGato started
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Does the nervex have iso threading on the headset also?