Originally Posted by mefly2
1 1/4" on mine; I had to return Rox risers that were the wrong size - even though I eye-balled the bars and risers and told the parts fellow that they didn't look to be the right size. So, many are unfamiliar with the new GSW specs - even those who sell bike specific parts.
Let's put it that way - for people not used to metric it's often not easy to quickly double check whether the 1 1/14" are 28 or 32mm. It's just a completely brain dead system, no, not the metric - that one actually works.