i think they came in 25,4 as well as 26.0.. i seem to recall they are labeled on the quill although i have only personally dealt with the 26.0.. luckily cinelli made bars in that size and i have used them together with no problems
i think one key part of getting a tight grip with these shimano stems is using their tool to effectively tighten things down.. it's basically just a 6mm allen key (no ball end) with a small length of tubing to slip over the end for a longer lever arm; easy enough to jury-rig...
Andrei Padlowski Glen Ridge, NJ
On Jan 16, 2008 10:46 AM, Tom Dalton <tom_s_dalton@yahoo.com> wrote:
> Regarding the Shimano Dura Ace "aero" style stems, I have two questions:
>
> 1) Do they take a 26.0 or a 26.4 mm handlebar, or did they come in both
> sizes?
>
> 2) Do they require a specific knurling on the bar to grip correctly. I
> recall the similar Cinelli 1-R having trouble gripping bars that did not
> have good, clean Cinelli-style knurling.
>
> Thanks,
>
> Tom Dalton
> Bethlehem, PA USA
>
>
> ---------------------------------
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