Originally Posted by Venice Motor Bikes
Try a heat gun (on low), then the Goo Gone at the edges. The goo gone has to get under the sticker to work.
Again, Venice has the right advice. A heat gun, used carefully will lift the sticker/decals and they can be easily peeled off. 3M makes a product called 'Adhesive Remover' sold at most hardware stores that will take off whatever goo remains. Probably the same as Goo Gone.