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This hitch takes the hassle out of short-bed towing with an automatic slider that gives 14" of additional clearance when turning. No more climbing in and out of the truck to pull a lever—rack-and-pinion gears move the head smoothly toward the tailgate as you turn and back toward the cab as you straighten out. The motion is controlled and consistent, so even slow-speed maneuvers in tight spaces feel predictable and stress-free.
The wraparound, single-piece jaw fully surrounds the king pin for 360-degree contact, giving you a secure, tight connection that cuts down on rattle and chucking. A solid 3/4" steel locking bar reinforces the hold, automatically engaging when the jaw closes. It’s a simple design that makes hitching up feel solid every time you back in.
The double-pivot hitch head flexes front to back and side to side to help reduce jarring and noise on rough roads. Three polyurethane dampeners cushion that movement—two built into the head for side-to-side pivoting and one underneath for front-to-back motion—so you get a quieter, smoother ride with less strain between truck and trailer.
The included underbed mounting kit keeps your bed rail-free when the hitch is out, giving you full use of the space. The side plates bolt on easily and offer three height settings—15-1/2", 16-3/4", and 18-1/4"—to help level your trailer setup. Once it’s in place, turn the handles to lock it down in the receivers or release them to lift it out when you need to clear the bed.
Made from sturdy steel with a rust-resistant black powder coat finish, this hitch is rated for 21,000 lbs gross towing weight and a 5,250 lbs vertical load limit. That strength gives you confidence towing big fifth wheels across long trips while keeping everything stable and under control mile after mile.
This fifth-wheel trailer hitch is not compatible with Sidewinder or Revolution king pins. Do not use any device that changes the pivot point of your trailer's king pin with this hitch.
Alternate Instructions
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Today we're going to take a look at the replacement side plates for the Demco Hijacker Autoslide fifth wheel trailer hitches, and this is for the underbed mount. Now this will replace the side plates that came standard with your Demco Hijacker Autoslide underbed fifth wheel trailer hitch. They are designed to bolt onto your hitch base so that you can attach your hitch to the custom underbed rails. This is designed to fit the 13,000 pound Hijacker, Part Number DM8550041. It also fits the 18,000 pound Hijacker, DM8550022, and the 21,000 pound Hijacker, DM8550037 models. This is a simple bolt-on installation to your hitch base. There are multiple rows of bolt holes on these side plates and on your hitch base, so depending how you line them out, it will let you adjust the hitch height.
The hitch height settings will go from either 15-1/2 inches to 16-3/4 and 18-1/4, so you have your choice of those three settings to get your trailer and tow vehicle as level as possible. These do have a rust-resistant black powder coat finish. They are an all-steel construction. It does include the instructions. It will include the mounting hardware, and it also includes two 1/4-inch spacers and two 3/8-inch spacers, and the spacers are used for adjusting your hitch mount with the bed pockets of your truck, and this part is made in the U.S.A. The way that these would open up is you just pull the clip, pull the pin out, and you can see each one of these will rotate out, and when you rotate those out, it will let you drop it into your underbed mount, and then once there, you just turn this back in to lock it, and then put your clip right through there just like that. This part is made in the U.S.A. That should do it for the review of the replacement side plates for Demco Hijacker Autoslide fifth wheel trailer hitches with the underbed mount..
Ratings & Reviews
Kenneth S.
2/6/2021
It did take work too install. The bed did have to be raised up but it wasnt a big deal. I do wish they had caps that fit better in the holes because the rails do sit flush with the bottom of teh bed. Rubber s moght be better to grip in.
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Sheryl
2/21/2022
Still good after one year. My hitch is easy to install and remove with the help of a modified engine hoist. The truck bed remains just that, a truck bed for hauling crap around.