Have questions or want to discuss cycling? Join Now or Sign In to participate in the BikeRide community.


Odd size seatpost..
#1
Hello folks. Here's my problem. My seatpost diameter is 25.6mm. I want to replace it with a longer post. All I can find online is 25.4mm or 25.8mm. Any suggestions as to what I should do?

  Reply
#2
You can get a shim that will go in the frame and let you use a smaller post. But I did a search for "25.6mm seatpost" and saw a couple shops that carry them. It's best to use the right size.

  Reply
#3
Thanks again Dave, I'll try that search. I guess you can tell by my posts that I'm making a few mods to my bike. :lol:

  Reply
#4
I've had very little success in finding a 25.6mm seatpost, only one site so far, and just one offering. Has anyone tried a post that's only ".2mm" different in size, as in 25.4 or 25.8? (not necessarily those specific sizes, mind you)

  Reply
#5
I agree with DaveM, it is best to use the same size, as .2mm will make a difference. It may be too tight and get stuck in your frame, or it'll be too loose and you'll have to stress the frame to tighten it. If you can't find the right size, try finding a smaller diameter post that will work with a seatpost shim.
  Reply
#6
Well, after some diligence I was able to find an alloy post that I'm satisfied with. I appreciate the feedback on this issue, thanks guys. Consider this problem solved. Big Grin

  Reply


Possibly Related Threads...
Thread
Author
Replies
Views
Last Post
 
57,658
10-21-2012, 07:19 AM
Last Post: FredS
 
14,485
07-25-2012, 10:58 PM
Last Post: Bill
 
11,038
05-27-2012, 04:12 PM
Last Post: Ryan
 
11,447
02-03-2011, 03:19 PM
Last Post: DaveM
 
15,377
12-30-2010, 11:29 AM
Last Post: sidmarx
 
Guest
15,729
07-19-2008, 06:59 PM
Last Post: Guest

Forum Jump:

[-]
10 Latest Posts
Should eBikers have to get an eBike lice...
Today 07:15 PM
How Bad Are E-bikes By You?
Today 07:11 PM
Our new review format – we'd like your f...
Today 06:59 AM
Which one should I pick?
Yesterday 08:09 PM
Chain skips under heavy load when pedall...
Yesterday 07:32 PM
New rider
Yesterday 07:07 PM
Are 26" really dying out?
10-18-2026 07:38 PM
Using ChatGPT for training
10-18-2026 07:32 PM
2026 Garmin Edge 1050 - warranty
10-18-2026 09:34 AM
Catastrophic bicycle failures
10-16-2026 01:36 AM

[-]
Join BikeRide on Strava
Feel free to join if you are on Strava: www.strava.com/clubs/bikeridecom

[-]
Top 5 Posters This Month
no avatar 1. Flowrider
28 posts
no avatar 2. GirishH
23 posts
no avatar 3. Jesper
14 posts
no avatar 4. Sidewinder
12 posts
no avatar 5. SPINMAN
11 posts