anyone know the exact I.D. of FSA 1.5" crown race? for A9C?
before someone says: 1.5".... I'm measuring ~1.572" at the base of the taper. i'm wondering how much interference is required.
brand does not matter.
Originally Posted by Riken
Fork crown seat OD: 39.79mm
Headset crown race ID: 39.76mm
The trouble with common sense is it is no longer common
so .001 - .005" interference going by the chart.