Hi what size seat clamp do I need for a 456 ti? the post is 27.2, just not sure on clamp size..

cheers

mine's a 34.9mm.

Enjoying your new bicycle?

just building it for now, I have a clamp but its a bolt thru, would prefer a QR, I read on tinternet in a few places it would be a 29.8 which seems too small to me, its an 18" frame not that I would expect that to make a difference

It's a 27.2mm post but there is an internal alu shim inside the Ti tube. 99% sure it's the 34.9mm you need but suspect their website should say.

Salsa 35mm

34.9 on mine