Originally Posted by willzz
i think on the R-20 the seatpost is 28.6mm
but if you use a 27.2 and tighten the clamp then you can use the suspension 27.2 seatpost..
that's... what i see others use ....on their R-20's
I would reccomend spending the extra $3-4 and getting a 27.2-28.6 shim. It takes out any possibility of eventual failure that can happen withh that extra little bit of room in the frame between the seatpost and the outer frame tubing. That's what I did,
Juan