Hmmm...I had a clicking in my 00 ZX6R this past summer and chased ghosts for quite some time......steering head bearings,rotors,fork bushings,triple clamps...so on....well come to find out, for me at least, the brake pads were moving just enough to make some noise.....nothing serious, replaced with EBCHH and seemed to quiet the noise alot...
Hope this might help you.
Jason
Everyone has their own thing.....