Hi I have a question for you but sorry not about buying your bike. I just bought a 06 fastback cx frame and I cannot figure out what size seatpost it takes. Everything on the web says 31.6 mm but I tried a 30.9 mm seatpost I happened to have and it is too large. I think the specs were changed somewhere along the way but it didn’t get to the Web. Can you tell me what diameter seatpost yours has? I would appreciate your help, thanks.
