shaking

So saturday the handle bars started shaking and pull from left to right. I thought two things steering head or front wheel bearings? Did some self test could not find fault. Anyone have idea?

[color=darkblue] Hi, New member to this group, wondering if any body could give me some decent advice. I have a F650CS 03 with 21k miles on the clock. since the last service there has been a decent amount of vibration coming through the handle bars and foot pegs at motor way speeds,. I now...