Originally Posted by jonny wong
I am 5'6, 130lbs. My bike is 52cm. I found a good deal for my tripple crankset 9 spd, but its only for 172.5 mm. Can i use this or i rather stick with 170mm? Will it change any of my performance if any at all?
I went through this same thought process around a year ago. The crankset that I wanted was only immediately available in 175mm rather than the 172.5mm that I was used to. I've ridden the bike with the longer crank for a full year now and as soon as I figure it out I'll tell you about any performance difference that I can sense.