I dragged a cylinder head on mine once; the footpeg feeler might have touched, but I was too freaked to notice. That event occured when I was going around a slow hairpin and was counter-balancing through the turn (dirtbike style). On "normal" turns I never dragged the heads, but I know people that have. The stock rear shock has a preload knob, so it's a simple click or two to adapt for pillion or baggage. You can get the rear really stiff if you need to. The Wilbers shocks are a popular option, but I wouldn't spend that kinda money. To each his own...I had a GS once that came with Ohlins, and the original shocks in a box. I put the stockers on; it rode just fine for me so I sold the Ohlins and bought some other stuff for the bike. Oil changes and valve adjustments are most of your service needs. 45 minutes sitting on a stool in your garage... You can buy the diagnostic reader for less than the cost of one dealer visit.