Originally Posted by
wunderkind
I thought the steerer tube diameter is standard. Yes this is for thread-less headset.
Naa, 1" and 1 1/8" are pretty much the two standards. Now they're even trying to change that on some of the latest bikes where the bottom is 1 1/4" and the top 1 1/8" so it takes a bigger crown race but still stays with a standard stem.