Thank you both.
Reason for changing is not so much the wrist but the back.... so even if the position remain sporty for wrist, I have the feeling rising a couple of cm will make it much easier for my back...
The superbike handlebar is, yes, cool, but I would keep it as last resort as I'm a kind of purist

: I'd like the bike to stay original as much as I can.
My GS500 is 1991 and as such I should have the intermediate risers: good chanches that the solution for me will be the higher risers.
Questions:
1- how can I be sure I have the intermediate ones? What should I measure?
2- where can I find the new ones?
Ebay? I'd need anyway a hand because most of the offers are in German

Original parts (even if a bit more expensive, unless prohibitive, I'd also take this into consideration...)
Thanks!
Luigi