Seat Post diameter

fwb2006

I'm just about to order my new frame (Yeti 575) and on their www its say the seat post diameter is 30.9. Does that mean I need a 30.9 seat post or a slighter narrower one to 'slip inside'?

Cheers

http://www.yeticycles.com/#/ourrides/575/BLACK/

supersonic

30.9 needed!

fwb2006

thanks, supersonic, your a star.

As you can tell, gone for the 575!!