I got this fender extender a few years ago. So far no problems. Last year I did a major front fork overhaul and removed the fender of course. I cleaned the lower front fender and then put silicone seal to seal the gap between the inside of the fender and this extender. Then, to provide more front protection, I got an inner tube (heavy/thick) from an ATV tire. Cut a piece to make an additional extension that is of course totally flexible. Now the front of my GW and the lower cowl are much cleaner and less debris makes its way there.
It is a great fender extender and the chrome hasn't faded or deteriorated at all. Looks great on the GW.