So the kilo tt has a 1 inch threadless headet and i am looking to replace it. so i had bought a new one not knowing too much about headsets except that it was a 1 inch threadless. i take off the crown race on the fork and slip on the new one and to come to find that it was larger in diameter. so i found out there are different sizes. I realize that the crown race has a 26.4 diameter.
So my question is that if i do get a headset that houses a 26.4 crown the, will the cups be a different size than let's say a 30 mm crown race set?