Chatting with an area mechanic, a shop will often chop the seatpost right before sale, so you should not have to worry about this excessive but if you do must, Will not stress as it can be carried out! Only for reference this was for just a size 51cm and https://cervelo-p2-triathlon-bike52739.blogaritma.com/26461566/the-fact-about-state-bicycle-that-no-one-is-suggesting