Sweet god... my mind is totally blown. I bought a Spicer basic track frame (KHS Flite 100), and have all the parts for my build. I tried setting the race from the cheap headset I had and was very disheartened to find that it would not go on.

I got out the micrometer, and sure enough the fork crown was 27.0 mm wide. This wouldn't be that big a deal if the fork was threaded; Tange still makes JIS threaded headsets. Threadless JIS headsets are another story.

I have searched the internet and found ONE dead ebay auction for a Ritchey WCS threadless headset sized for JIS.

I searched the QBP catalog at my LBS and found nothing...

I'm seriously about ready to just give up and take a file to the fork crown and get the headtube reamed.

Where's the aspirin?

Probably should have posted an actual question...

Does anybody know if 1" Threadless JIS headsets exist? Thank you.

My MTB is JIS and I was recently looking into options and found a JIS threadless Aheadset at Nashbar

https://www.nashbar.com/profile.cfm?c...eid=&pagename=