Originally Posted by
jamesdak
For comparision on size. My 54 cm clearly stamped on the BB.
Your bike looks awesome! Is that the nice old all silver 105 stuff? I messaged him and sizing made no sense. He said standover was 31.5 inches but, tube measurements center to center were "seat tube 19.5 inches top tube 20 inches". It's not a science, but I can look at the head tube by now and come really close to guessing a frame size. Weird. I think it's more like the size of your bike.