Bulbs fit nicely with room to spare. VERY bright! great color and give excellent indication from the side Amazon link below
EP36 flasher from any auto part store will slow them down.
Please take extreme care when removing the Y0039.K GENUINE BUELL OUTER TURN SIGNAL LENS.
Best to remove the screw and just loosen the lens enough to slip a tiny flat tip under the base reflector and free that up before taking the lens all the way off at a 45 degree angle.
These are still an excellent upgrade for the stock signals IMO. But please beware of the lens cover removal. This should be where your focus is for the mod or you'll need new lenses for sure. Irritating if broken but replacements are available if needed. Has anyone found a way to salvage a broken lense? Hate to toss them out.