abstract

As has been clear from the discussions, there are numerous ways (and points) from which to measure, discuss and label a frame's sizing. If one is interested in finding the frame size (as determined by Pinarello), turn the bike/frame upside down and examine the bottom bracket area. Search for a single imprinted number. In this photo, there is a number '2,' which I believe corresponds to 52 cm. If a '5' marking was found, it would mean it is a 55cm frame, according to Pinarello's frame measurements. If one looks under the first letter P in Pinarello you can see a faint number 2. The other numbers are the serial number, followed by a dash '-' and the year of manufacture, in this case, '99' means it was made in 1999. Disclaimer: I do not know if this coded system has been continued with their more recent models.