That hitch uses a Class III receiver tube system, but I'll bet you that it's NOT rated as a Class III.

That looks more like those "Class 2.5" hitches that are Class II rated, but use the Class III receiver tube system. Popular for bike racks and add ons, as well as smaller trailers.

A true Class III (5000 lb tow cap) will have cross bracing out to the frame rails, AND forward bracing to near the rear suspension. No Class III will only have the 4-bolt stock plate. That's Class I (2000 lb). And if you know what you're doing, you can make a Class II (3500 lb) for the stock plate, but be very careful of leverage on those bolts.

My Cdn $0.0285 worth....