No more getting in and out of your truck to mess around with a manual slider. This hitch slides automatically to give you 14" of additional clearance for tight turns whenever you need it. Custom underbed installation kit included.
Features:
Specs:
Note: 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.
Most often used on trucks with 6-1/2' beds, a slider helps to eliminate clearance problems during slow-speed turns. When you are towing a fifth-wheel trailer, your hitch must be situated on the cab side of your truck's rear axle. However, at slow speeds you can use a slider to slide the fifth-wheel hitch (and the trailer) toward your truck's tailgate and past the rear axle, creating enough space between the cab of your truck and the trailer to permit less-restricted turning.
Normally, you'd have to get out of your truck and pull a lever to release the slider before every turn, but what if there was an automatic system? Imagine having 14" of extra clearance while towing your fifth-wheel trailer. Now imagine having this without needing get out of the truck to move your slider. The Demco Autoslide makes this fantasy a reality. The Autoslide automatically glides back smoothly when you make a sharp turn so you can maneuver effortlessly around tight corners within campsites and parking lots.
The base of the Autoslide has a built-in rack-and-pinion gear system that operates automatically. As your truck turns, the pinion in the base also turns. This activates the rack gear, which causes the rotational force of the truck to be converted into the linear sliding action of the hitch. So, when your truck makes a sharp, slow-speed turn, the gears inside the Autoslide force the hitch head to slide down toward your truck's tailgate in a smooth, controlled motion. This way, any time that your truck turns more than 10 to 15 degrees, the Autoslide will ensure that there is enough clearance for your trailer to complete the turn as well, and it will do so without any jerking or binding.
In order for the rack-and-pinion assembly to function as designed, the pin box must be stabilized on the hitch head. Normally in a fifth-wheel hitch, the king pin moves inside of the hitch head so that the trailer can turn. With the Autoslide, the king pin remains fixed inside of the jaws of the hitch and it is the hitch head itself that turns. This is thanks to the capture brackets on the sides of the head that brace the pin box from both sides to hold it in place on top of the hitch head. This is done to ensure that there is enough resistance within the hitch when your truck turns to properly activate the rack-and-pinion gear mechanism.
To stabilize your pin box on the hitch head, simply push the capture brackets up against your pin box once the trailer is coupled and tighten the outer bolts and the inner jam nuts. The Autoslide head and brackets will fit standard pin boxes that are between 12" and 14" wide. If you have a Glide Ride, Mor Ryde, Trailair Tri Glide, Rota Flex, Lippert Road Armor, or 5th Airborne pin box, you must install a special locking plate (sold separately) as well.
When you straighten your rig out again and your trailer moves back in line, the hitch head will rotate back to center and slide back toward the cab into the straight towing position.
The single-piece, strong wraparound jaw completely surrounds your trailer's king pin for 360 degrees of contact. This wraparound jaw provides a more secure connection than standard 2-piece jaws that close in on the king pin from the sides. The increased jaw-to-king-pin contact on the Autoslide offers tighter tolerances around the king pin, which minimizes both rattle and chucking, for a smooth, quiet ride.
A 3/4" solid steel locking bar spans the area in front of the jaw. This bar provides an added barrier of protection against accidental disconnection so you can have peace of mind that your trailer is secure. The locking bar is attached to the jaw and to the spring-loaded handle. The bar automatically locks when the jaw closes around your king pin.
The double pivoting, cushioned head improves your towing experience dramatically by helping to reduce jarring and unwanted noise. Built-in pins allow the hitch head to pivot back and forth and side to side. And hooking up is easy because the hitch head will automatically pivot to the proper angle when it comes into contact with your pin box.
Three polyurethane dampeners help to cushion the movement from the pivoting head and to reduce towing noise. Two of these dampeners are built into the head assembly to cushion the head's side-to-side pivoting. The third dampener cushions the back-and-forth motion and must be installed in the hitch prior to use. Installation of this third dampener is easy - simply press the dampener up into the pre-drilled hole underneath the hitch head.
Easy Installation
The Autoslide hitch installs using the included UMS custom underbed mounting kit. The hitch comes pre-assembled for an easy installation. All you have to do is bolt on the side plates and attach the head to the hitch base.
The side plates have 2 functions. They contain the feet that fit into the receivers in your truck bed, and they allow you to raise or lower the hitch head to better match your pin box height. After you choose your desired height setting, simply bolt the side plates to the hitch base with the included hardware. Then lower the hitch into the 4 UMS receivers in your truck bed. Turn the handles to lock the feet into the receivers and secure the handles with the included safety pins. The hitch can be removed to give you full truck bed access. Simply remove the safety pins, turn the handles to unlock the feet, and lift the hitch out of the receivers.
Clearance Formula for Short Bed Trucks
Use the formula below to ensure there will be enough space between your truck cab and trailer when executing a 90-degree turn.
(A+B) - C = Clearance
A = Distance from the center of fifth-wheel hitch jaw to truck cab
B = Length of Travel (14")
C = Width of trailer divided by 2 (to get half)
For example: If the distance from the center of the hitch to the cab is 36", 36" + 22" = 58". If your fifth-wheel trailer is 102" wide, take half (51"), then plug in: 58" - 51" = 7" of clearance.
Note: At least 4 inches of clearance is recommended to safely execute a 90-degree turn.
Alternate Instructions
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Hello, everybody. This is Jeff at etrailer.com. Today, we're gonna take a look at this underbed rail and installation kit for the Demco Hijacker UMS 5th wheel and gooseneck trailer hitches. Now, this is a custom fit part. It is designed to fit the 2020 and newer Chevrolet Silverado and GMC Sierra 2500 and 3500 HD trucks without the OEM prep package. And on a custom fit part like this, I do like to recommend for you to go to our website, use the fit guide, put in your year and model vehicle, and it'll show if this will work for your application.
Now, many trucks now are coming equipped with the factory installed underbed puck systems in the truck bed to allow you to install a 5th wheel hitch for towing and then easily remove the hitch when you're not towing. Now, if you do not have one of those already installed in your truck bed, this kit will let you have that same underbed mount system for your Demco Hijacker 5th wheel and gooseneck trailer hitches. Wanna pop up an insert. There's the Demco hitch. It'll fit right into this.
Now, the advantage with this underbed mount system is when you're not towing your 5th wheel, you can remove that hitch from your truck bed and still have full access to your truck bed. There's no rails to get in the way. This installation kit is designed for use with the Demco Hijacker underbed series 5th wheel and gooseneck trailer hitches. These underbed rails right here will provide complete access to the truck bed when the hitch is removed. The rails are not exposed.
They're all underneath the bed. And it'll just give you four small mounting holes that'll sit flush with the truck bed. As we mentioned, this is a vehicle specific design, so it does reduce the installation time and requires less drilling than universal systems. Basically, these brackets right here on the sides, these will bolt onto the outside of your truck's frame rails. These crossmembers will sit along the top of the frame rails beneath the bed.
Now, drilling is required for installation. These parts are a steel construction. They have a nice, black powder coat finish to resist corrosion. Now, this does include everything shown here. The frame mounting brackets, the crossmembers, all the installation hardware, even gives you a couple tubes of threadlockers to put on the bolts when you go to install it. And it even comes with four of these cap plugs that you'll insert into the holes in your truck bed to keep those holes protected from any dirt getting into them. Comes with a nice set of instructions that'll describe how this all goes together. But that should do it for the review on the underbed rail and installation kit for the Demco Hijacker UMS 5th wheel and gooseneck trailer hitches..
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No more getting in and out of your truck to mess around with a manual slider. This hitch slides automatically to give you 14" of additional clearance for tight turns whenever you need it. Custom underbed installation kit included.
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