Cane Creek shims to adapt a 27.2mm seatpost to a larger diameter seat tube. Available in four different sizes.
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I haven't used many seatpost shims in my life ..but this was rock solid
Does exactly what it needs to do - fit a smaller seat post into your downtube. Would reccomend.
Wow what a difference this seat post makes on rough terrain. Does take up some height but man does it work.
The Cane Creek Seatpost are great quality, works superbly
The shins are working just fine. No issues at all