I have solid mounts on my bike, but do not have a sportmax seat. The vibrations are not worse that without the mounts in my opinion, at least not that noticeable. My solid mounts came together with the other modifications (a lot, look at Ingo's page if you are interested), so I did not try this separately. Even if there is a little more vibration: the modification is worth it!
As far as distance is concerned: as the bike is now I did 900km in one day and no pain. With my last Vmax I rode to the Black sea (3500km one way) with a standard seat (not one day of course!). I think the trick is practise (drive often) and wear leathers. Does it for me.
Ciao,
Patrick Kuyper
Vmax Club Holland
The Netherlands
