I'm considering getting a second hand Duke 390 (Jan 2014).
I just tested it out, and while the acceleration is orgasmic, my friend and I noticed this weird rattling sound around 2-4000 rpm in the first gear. We didn't get much time to test it out properly, but this was noticeable.
The owner said that it's because of the heavy sports engine. We, on the other hand aren't quite sure.
Would you guys have any idea about this?
Thanks


