Here are some pics of the rear ARB from the under/backside.
Since I bought the bumper used, the original mounting points were mangled from previous welding etc.
I welded a piece of stout angle iron to makeshift a new bracket. The result was better, stronger, and more functional than the original.
In the first pic. notice how the mount protects the bolts/nuts. I also rounded the edges off so that they are able to scrape and drag without much digging.
This also allowed me to bypass the flimsy side brackets that stick out from the left and right frame rails. The original ARB bumper, if I am right, used these as mounting points, similar to the stock bumper. These things are crap. I was able to mount directly to the frame rails with the new mounting brackets.
In the second pic. I want to point out the tubular reinforcement ARB used in the construction of this bumper. STOUT
The third pic shows how simple the new brackets were to weld on.
There are 8 grade ‘8’ bolts holding this thing onto the frame. It is STOUT, believe me.
The only thing I dislike about the bumper is the fact that mud, salt, snow, etc. gets stuck in the underside easily. To prevent premature rust, I may try to drill some drain holes for water to escape.
I hope this either spurs some creative thoughts that aid in home-made rear bumpers or makes ARB know that we are ready for a new and improved rear bumper for the 60.
Cheers