Just fitted today, instructions good. The caliper bolts do all the work holding the fender extender in place with no mechanical fix to the guzzi mudguard, although two plastic pins supplied for a mechanical fix, not needed. Not fitting these will also make brake caliper servicing easier in the future.
Will come back and report on how well it works protecting the rad and hopefully engine casing and horn
Got one already fitted on mine and does a reasonable job. Not 100% . Saves a lot from getting the radiator but still a vertical streak on the lower front of engine casing below. Way better than without though for sure.
One of the first things I fitted to my bike, it really does help and is a worthwhile addition. I had issues with the paint coming off the mounting brackets, but just took them in with some other stuff to get powder coated. Won’t have that problem again.