Vibrations on 660Z

Ok so maybe this is not an issue and I'm getting old but I really feel as though the vibes on my bike is something I must try and improve. At around 120km/h there is noticeable vibes all over mostly hands and feet. It changes at speed, much better at 100km/h but that is just too slow when doing big distances. My bike has : Pro Taper YZ high fatbar with Cycra hand guards, no bar weights. It also has Rumbux crash bars and the vibes on them is very noticeable when I ride and put my hand on them so not sure if they can add to the overall vibes. On the front I have a Dunlop 606 and on the back a Trailwing something. Anyone else experience this on the tar ? Off road it's not an issue at all.