Cinelli made and still makes many bars. Assuming we're talking vintage it's most likely either 25.4 or 26. If it turns out to be 25.4 you can buy shims to work with 26. (Or make them out of a coke can like Lemond did but that's a little sketchy.)
Last edited by ksryder; 11-15-18 at 02:25 PM.
Reason: bad memory