Being new to the forum, I was not aware of this topic.
I had been doing a little poking about to learn the innards of my new baby and to wire in a battery monitor/USB GPS charge point.
Next day I spotted two little black 'roundy 'objects on the workshop floor.
What's all this? I said, talking to myself once again!

Clearly, they had dropped out of my CBX. But where from?
Days later, still scratching my head, I searched the parts listing for 'GROMMETS' and found the answer here:
https://www.bikebandit.com/oem-parts/2015-honda-cb500x-abs/o/m156895#sch907877This is certainly something to watch for any time you remove a side panel. An unknown unknown!
Have now lubed both sides. Good tip.
