No warnings beforehand, bike rode the same, only reason I noticed it was to clean the chain, looks like it just happened on my most recent ride.
Superdomestique, the eccentric rusted out 3 months ago, my post is somewhere here on the forums, everything in the drawing you shared has been replaced by the dealer, minus the swingarm, sprocket, and sprocket carrier.
Since the replacement, the bike has been far away from any water to avoid rusting again, no sign of corrosion either.
JHT, that'll be my next step, thanks for reminding me to do so.
Bagger, definitely check the grease, I planned on doing it, but i couldnt figure out how to lift the rear up without using the rear stand in order to remove all the components.
So since I reach the desmo quickly, I was going to make sure the dealer does it as its supposed to be done at that time.
Not sure if my bike just wants to be a lemon now, but I have been pushing myself to pursue other brands.