NotSpartacus Posted April 24, 2009 Share anybody know what seapost (Bontrager)diameter comes on the Madone 4.5?I want to upgrade but am not sure what diameter I have at the moment. Link to comment Share on other sites More sharing options...
Mudsimus Posted April 24, 2009 Share Im sure its 27.2mm Link to comment Share on other sites More sharing options...
steveO:K Posted April 24, 2009 Share ya. i agree. almost sure its 27.2(the narrow one) strangely trek website doesn't specify but pic looks like 27.2 Link to comment Share on other sites More sharing options...
turtlek Posted April 25, 2009 Share it is definitely a 27.2 diameter!!! Link to comment Share on other sites More sharing options...
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