Originally Posted by
lemniaalsa
Hello all
I went to my local bike shop to measure my seat post size and I measured it to be where it's indicated in the picture. The owner didn't know if it was corresponding to the line above or below the measurement. So, in the attached picture, is my seat post a 25.8 or a 26?
Thanks a bunchh
The biggest number that fits into your seatpost is the seat tube size, and thus the seatpost size. It is a very handy tool for quickly ascertaining seatpost size - we have both size ranges of those rods at our shop. Using a caliper is not accurate enough because the top of the seattube is usually deformed to give an unreliable size.