Originally Posted by acidfast7

I posted something like this on the previous Afine thread and some shall-we-say-idiots were saying that frame flex doesn't matter and that an old MTB frame was "good enough."

I grew tired of the argument and didn't post the German specs, but if I was you, I would ensure that you have a IGH-specific frame. As slight frame deformations when riding will cause serious issues with an IGH. That's why Rohloff-approved frames exist.

I wouldn't fit one to a bike that didn't come with one initially. But, I live by the sunny seaside and really couldn't care less.