Most common extras are GAP insurance, paint protection (ie Supergard or similar) and smart repair insurance. However my dealer also has a "Delivery Pack" option which includes Supergard, floor mats, mudguards and a full tank of fuel. I pointed out to him that the Honda OTR prices also include the full tank of fuel and I was not going to pay twice for it! In the end I negotiated a favourable price for just Supergard and rubber floor mats.