I recently installed the Illium Risers on my R1200RS and found the installation very simple and straight forward. The dimensional change, given the steering head geometry, translates to a 1.1" displacement to the rear and a height increase of 1.1". For me, the change is very noticeable and changes the feel and character of the bike. I don't feel as much a part of the machine as I did with the original mounting. It does provide me with a bit more up right position (I am 5"-11" with 30" inseam) and reduces the loading at my wrists. I also benefit from less fatigue in my neck which is brought on as the result of an old neck injury. At the age of 76 and having started motorcycle riding at 14, I now find myself giving comfort a bit more consideration than in years past. I gave up some of the bikes feel in the twisties for a bit more comfort. I can't say enough about how pleased I am with this machine.