The Dobinson’s carrier bolts on to a bracket that’s welded to the arm. I just used some existing holes and drilled out a few others and bolted it on to that footing on the swingarm bracket. It was very sturdy. My only complaint is it carried a little low. Since the cans face parallel to the vehicle with the C4, it hung back a little far. I scraped it once or twice climbing up or down various obstacles.
I actually just sold my Dobinson’s a couple months ago. I bought a 4x4 labs kit and built it myself, I bought another C4 carrier but this time I just welded it on since everything was apart. I really did like my Dobinson’s but the clearance on this labs bumper and overall look is much better.
I stand by that for the money the Dobinson’s is a great bumper. It’s stout as hell. I beat on it hard and it kept on ticking. I liked that the swing arms pinned shut and I like that they were self supporting with the little rubber feet on the swing arms. These labs arms sort of float in the center so you get a lot more play.
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