Originally Posted by bigbossman

Yeah - the BMZ frame. Ok, so all my Japanese headsets are JIS then.

Questions - can I just use a ISO crown race with JIS headset cups/bearings? Where can I get one? If not, are ISO headsets commonly available? Who has them? A quick searh of Performance and a few other vendors shows 1" threaded headsets, but they do not state ISO/JIS.