I just installed front mud flaps that I purchased a few weeks ago from Four By Four Club on my 2016 G550 and was hoping someone can confirm that I installed them correctly (or not). They didn't come with any installation instructions and all they offer on the web site is that each side takes about 10 minutes to install and no drilling or modification is required (which suggests that it should be easy). I took a look underneath with the flap and included mounting clamp in hand and there was only 1 way that seemed obvious to install them. Here's a photo showing the driver's side flap installed:
Here's a photo showing how I installed it from the underside. The clamp is holding the bar from the mud flap against a channel that is located on the inside side of the running boards:
The mounting seems to be pretty solid and took less than 10 minutes, but I'm not sure if they're mounted quite right as they don't seem to be quite as tight to the running boards as the shot shows on the Four By Four Club website (though the angle of the photos is different):
I installed the rear mud flaps a few days ago (also purchased from Four By Four Club). That turned out to be a bit of a PITA because when I removed the bolts they're supposed to piggyback with, the rear bumper shifted, so I had to use a jack with a pad to force the bumper back up to get the holes lined up again. Otherwise, they were fairly easy to install.
Here's a photo showing how I installed it from the underside. The clamp is holding the bar from the mud flap against a channel that is located on the inside side of the running boards:
The mounting seems to be pretty solid and took less than 10 minutes, but I'm not sure if they're mounted quite right as they don't seem to be quite as tight to the running boards as the shot shows on the Four By Four Club website (though the angle of the photos is different):
I installed the rear mud flaps a few days ago (also purchased from Four By Four Club). That turned out to be a bit of a PITA because when I removed the bolts they're supposed to piggyback with, the rear bumper shifted, so I had to use a jack with a pad to force the bumper back up to get the holes lined up again. Otherwise, they were fairly easy to install.