Completely bone stock. Nothing done to it other than uncorking the exhaust. This is the bike my wife rides when she wants to go on the riding trips or just putt around camp. One thing Honda knows how to do well is make an air cooled bike just like the old XR's. The motors are bullet proof. Not a bike to ride anywhere gnarly, extreme or even at a fast pace, but it's still just a "cool little trail bike" to have some fun on.