Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  

Go Back   > >

Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

User Tag List

Thread Tools Search this Thread
Old 01-17-08, 08:16 AM   #1
Über Member
Thread Starter
Ryleeryno's Avatar
Join Date: Jan 2006
Location: Massachusetts
Bikes: 2005 Trek 5000 (the last OCLV)
Posts: 1,489
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Seatpost collar question.

I need to replace the seatpost collar on my 2005 Trek which has a 27.2mm seatpost and I don't know what size collar to get. Do the collar sizes reflect on the outer diamater of the seatpost or the clamping area of the post instead?

For instance. I'm getting a Felt F3c frame which utilizes a 27.2mm seatpost also. Are the collars interchangable or are they frame specific?

Any advice would be appreciated. Thanks.
Felt F3c

Ryleeryno is offline   Reply With Quote
Old 01-17-08, 11:27 AM   #2
Senior Member
Svr's Avatar
Join Date: Dec 2005
Location: Atlanta, GA
Posts: 1,223
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
You need to measure the outside diameter of the seat tube where the collar (or clamp) sits. There are several different sizes. The two most common sizes these days are 1 1/4" (31.8mm) and 1 3/8" (35mm).

The seatpost size has nothing to do with seatpost clamp size.
Svr is offline   Reply With Quote

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

All times are GMT -6. The time now is 01:39 PM.

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to and affiliated sites.
  • Ask a Question
    get answers from real people!
Click to start entering your question.