I'm 5'8" and ride a 53... its definitely on the big side but I like it. I have a 90mm stem and some 125s on mine so reach isn't really an issue. I don't think I could comfortably ride with bullhorns though; like on the bullhorns unless I was sprinting. Got about half inch of space from the package too which is a little close for comfort but obviously I spend all my time riding it not standing over the damn thing.