Thanks, I checked that out earlier. I’m 180cm tall so clearly should be on a 54cm according to Mason, except the stack and reach figures of the 52cm are virtually the same as my 54cm Supersix. I also have a short inseam of 31 inches which means that I tend to size down.
I'm also just trying to work out the sizing - I normally ride a 54cm frame, but the 52cm Definition seems to be comparable in terms of stack and reach - do they come up large? What inseam are you?
What's the price?