In traffic as I was slowing down to the redlight, while I was at 2nd or 3rd (most likely 3rd) gear, and used the rear brake, I heard this single clicking sound. I can't reproduce it all the time though, but this has happened to me twice (so the frequency is low but it does happen).
I figure this sound is most likely from the transmission, but don't know why. Anybody having any ideas where and why? And does it indicate something bad or something I shouldn't be doing (perhaps, use the rear brake while at low gear)?
Bike is '03 Kawi ZX-6R.