Originally Posted by
himespau
From reading up above, it looks like the simplest way to use one of these on a JIS fork is to find an old bike shop with the ability to turn the race down to ISO diameter, right?
Yes. I still have not tried to do it, due to lack of interest, but it should also be fairly simple to ream out the ID to JIS spec. The advantage of cutting fork crown down to ISO spec is that you won’t have to worry about it if you ever need to replace it or swap it for something else.