Ok have yoyu checked the following items -
Ask me how I know all this.....
- there is a anti-vibration rubber mounted on a small arm and pushese down on the inside of the lower part of the front fairing (under the headlight) - If this isnt pressing down on the fiaring itself you will get vibes - (18A-24724-00 - https://www.fowlersparts.co.uk/parts/418.../cowling-1)
- the wind screen as the 6 little rubber grommets cant slightly shrink and get hard over time. - (90179-05523 - https://www.fowlersparts.co.uk/parts/418.../cowling-1)
- check the mirror bolts arent loose, as these bolt the fairing and the mirrors to the sub-frame.
- check the mirror hinges, once these get loose you either have to replace them or do what I did and dremel out the rivits and replace with a bolt and nylock nut to remove the slack/slop.
- check the left and right infills have all the vibration foam strip applied, these can go flat over time. You can buy these or got to Hobbycraft and get a thin sheet of high density (one sided adhesive) foam and cut/make your own - (5LV-2834E-00 - https://www.fowlersparts.co.uk/parts/418.../cowling-1)
- check the anti-vibration rubbers are present and install between the clocks and the infills - (5LV-28346-10 - https://www.fowlersparts.co.uk/parts/418...70-a/meter)
- lastly if all the other options arent whats causing the noise then only remaining item/s are the front wiring loom and relays. The loom should come with foam tape on parts of its length where it rubs against the fairing and the headlight. And the relays direction under the clocks should all have little rubber isolation mounts.
- And thinking outside the box, do you have a carbon fibre or other very ridged rear hugger - the CF one I have would resonate at certain speeds, changing it for a fibreglass one remove that noise.
- And I assume you have checked all the obvious things, like front mudguard bolts, ancillary nuts & bolts on the front forks, horn mounting, radiator cover bolts, you just check all the non-structural nots and bolts on the bike. Oh and I assume the petrol tank bolts arent loose..?
Ask me how I know all this.....