Pegs are "usually" the first thing.
Pavement 'hills' & 'valleys' during a good lean will cause other things to scrape first.

I've replaced my peg bolts twice now.
My belly pan was repainted twice before the side ripped off and took out one of the acorn nuts holding it in place.
Heat shields repainted once.
Plastics all scuffed up.
Underside of pipes - I don't even look anymore.

Since Traxxion suspension upgrade, I've had to really work at finding some hills and valleys to scrape anything but the footpegs.

Advanced rider tip: keeping "maintenance throttle" during the entirety of a turn will keep the suspension set and rear tire loaded, resulting in less things scraping.

Cheers,
Steve