Originally Posted by
bradtx
It'll work. The longer steerer tube will either require some spacers, which will allow you to really dial in your handlebar height, or the steerer tube trimmed to fit.
Brad
I'd guess the 58cm frame-fork will fit in the 55cm frame, but I want both bikes to be usable. Actually, after the swap, the 58cm bike (with the 55cm frame-fork) would be sold & I'd keep the 55cm bike (that would have the 58cm frame-fork installed)