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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