Wow, there's so many uncertainties w/ this. First, is the TT actual or virtual. Does Serotta do c to c or c to t, and what did the guy do when he took the measurement. If the TT is virtual, then this is a short TT bike! But realistically, since this isn't a custom but a hand built production, chances are it'll fit more into the standard sizing mold where a 58cm bike will have a ballpark 58cm TT. At about the 56-58 range, the trend I've seen from production bikes is that the TT and ST are almost exactly the same (.5cm variation).
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