>>1359384you'll have to measure unfortunately. I find that 90% of people who buy parts online buy something that doesn't fit. a good quality calipers made by mitutoyo, mahr, brown and sharpe, or starret is the minimum starting point for sizing bike components. for seatposts, you can measure the old one with the calipers. if you have none, you will need pic related to measure the inside of the frame tube.
