I tapped the old cups out this morning and they measured 30.0mm so I'm fairly sure its JIS...I didn't check the fork crown race though...I just kinda assumed it was 27mm since the cups were 30.
How is the lower race measured? just tap it off and measure the Inside Diameter?
Its possible my measurement was off by .2mm I'm using non-digital calipers that measure in inches, which I convert with google.
Last edited by Zaphod Beeblebrox; 10-12-09 at 01:39 PM.