Originally Posted by
madi4
I bought a wrong seat post size, it’s 31.6 seat post. Is there any chance that I can use it on my 27.2 seat tube?
The way to use it is to post it here as a trade for a 27.2mm. I have several new and nice vintage 27.2mm posts but only need a 30.8mm with a setback, so I am out but you never know and if you find one all it will cost is shipping. Over on the Classic and Vintage forum there is a trade thread that might catch someone like me with too many bikes and needs a big post for some reason. Welcome.
Almost forgot ,there is a long shot over on the Mountain Biking Forum there is a Mountain Bike Marketplace with a trade thread.