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onetwentyeight 
185? 68cm? Are you of very strange proportions? Most 6'4" people I know can be fit comfortably to bikes with ~60cm top tubes and run 175mm cranks
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? 25.5" = 65cm It's a big frame....but not that big
185's would be in proportion to the frame size. I'm 6'2" and ride a 60-62cm, though as I get older I prefer the larger frame proportions. My daily rider is a 62cm with 180 cranks. I like them and I can stay comfortable all day on them. Ifyou like 185's it go for it, in addition to overlap I'd be a bit concerned about BB height. Catching a pedal while spinning through a turn wouldn't be so fun.