I have a BMC Alpenchallenge AC01 IGH Alfine 8 Speed 2017 size small. Although the size is appropriate for me, I would prefer the medium, but the small was 47% off, so I bought it.
Now I have the chance of buying the medium size frame of the high end model. The frame is from the same year, but it came originally with Alfine 11 and comes with a carbon fork.
Do you guys think I can simply replace the frames without much hassle? I would guess I would only have to take the components from the small and mount them in the medium frame. I would really appreciate some opinions on this. Thank you very much.