When an especially bulky trailer or heavy load requires more towing power, class 4 steps in to take the reins. CURT class 4 trailer hitches are made with all-American steel and a powerful design. They are commonly found on commercial vans and larger pickup trucks and SUVs. This particular class 4 trailer hitch boasts a gross trailer weight capacity of up to 10,000 lbs. and a tongue weight capacity of 1,000 lbs., giving it the raw towing power needed to tow most campers, boat trailers, car haulers and large utility trailers, as well as a winch mount or cargo carrier. It is designed specifically to be a custom-fit trailer hitch for certain years of the Ford F150, F250 LD, F250, F350 Super Duty or F450 Super Duty (to verify your vehicle compatibility, see the CURT application guide at curtmfg.com).This class 4 features a square tube frame and comes with all necessary hardware for a complete installation on your vehicle. Also, like many class 3 hitches, this class 4 hitch can be used in combination with a weight distribution hitch to increase its overall towing capacity. With a weight distribution system attached, the gross trailer weight capacity increases up to 12,000 lbs. and the tongue weight capacity up to 1,200 lbs. (NOTE: Never exceed the lowest weight capacity of any towing component).Class 4 hitches can accept any ball mount or hitch-mounted accessory with a 2" x 2" shank. Like all CURT trailer hitches, our class 4 line goes through a strenuous finishing process, receiving a shot blast and wash to create a flawlessly smooth surface, and then being co-cured with two finishing coats. A liquid Bonderite coating and gloss black powder coat finish ensure that the hitch stays well protected against rust, chipping and UV damage. This co-cured finish is backed by a one-year warranty, while the hitch as a whole comes with a limited lifetime warranty.