I've heard of Goo Gone, but have never used it. Just got my new bike in May & still have a couple of those WARNING stickers on some chrome, that I want to take off. What takes off the leftover sticker gummy residue?
Harley sells "Genuine HD Decal Remover" - 4 oz. for $24.95. You may void your sticker warranty if you use anything "unauthorized product"