I bought the ORC rock sliders/step from Jack at Jackwagon and I am extremely happy with them.

ORC Double Sill Protection for Mercedes G Wagon
ORC double sill protection Ø 60 mm fits Mercedes G till model 2018, 5 doors Alloy, powder coated black. Protects the sill from the bottom and the side. Mounts at the original fixing points for the side steps. Mercedes G 460/461 + PUR/Professional without serial side steps require the mounting kit.

The basic install was easy just remove the stock sideboards and install the ORC rock-sliders/step using the same holes. Where you run into a problem is on the 2012 and maybe other years is the drivers side exhaust system runs very close to the rock sliders and causes a vibration. It was driving me crazy but I figured out how to fix the rattling of the muffler on the ORC rock slider.

Step 1 unbolt the rubber mount and slide them off the muffler rods.
Step 2 unbolt mounting bracket (far right side of the bracket) from the frame

Step 3 move the rubber mount over one hole away from the rock slider side and mark the right side hole on the frame (metal punch works well)
Step 4
Drill a new hole on the frame for the right-side of each rubber mount.
Step 5 threw bolt the right side of the rubber mount back on to the frame. Use a threaded locknuts on the side you drilled to secure.
Step 6 Enjoy

Shawn Meiman