My ZX-14R is new, and lats night it got its first wash and wax. I was doing fine until I got to the OEM mufflers (you know, those huge bazookas that you simply cannot visually ignore . . .)
The end caps are plastic (yuck), but the surface of each muffler body is a very rough finish that looks and feels sort of like "asphalt". Its rough surface makes washing it unpleasant enough, as the cloth kept getting stuck on the surface as I tried to sweep it across.
Then it got worse, when I realized I had no idea whatsoever to apply to the muffler surfaces to preserve them (even though they don't deserve preserving, but rather disdain - WHY did Kawasaki use this crummy finish??).
Obviously, you cannot wax them. And I have no idea what the 303 Protectant I use on non-painted plastic surfaces would look like on, or do to, this "asphalt" surface.
What are you supposed to do after you wash the dirt off? (Beyond replacing the mufflers - Graves slip-ons, that will also knock 23.6 lb off the weight, are on order but Graves says they need to make sure first they will work with a center stand (April), and in the meantime . . . ?)
Jim G