Always difficult to determine where a noise comes from.
Suspension? It will probably make the same noise when the motorcyle is stopped and you push down on the forks (handlebars).
Maybe other things... brake noise? Cable striking the forks or frame when the forks compress?
pigiolino you are clever. I KNOW you can get these answers on an Italian forum. You are really just practicing your English! But that is OK by me!!!!
now tell me.. next time I come to Bologna where can I find polenta con sugo della rene di maiale?
Harley-Davidson: Seen one, heard 'em all...