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This hitch slides automatically as you drive to give you 14" of additional clearance for tight turns. A wraparound jaw provides a smooth ride and a locking bar offers added security. Pivoting head allows easy hook up and helps to limit chucking.
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
Included with the Autoslide hitch is a rail adapter that's specific to the Chevy/GMC factory prep package. Just drop the adapter into the puck receivers built into your truck bed and lock them in place. Then you can position the pre-assembled hitch base in your bed and easily pin it to the rails. Just bolt on the side plates and attach the head to the hitch base, and you'll be ready to tow.
The side plates have 2 functions. They contain the feet that fit into the rails, 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 attach the base to the rails with the included safety pins.
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" + 14" = 50". If your fifth-wheel trailer is 84" wide, take half (42"), then plug in: 50" - 42" = 8" of clearance.
Note: At least 4 inches of clearance is recommended to safely execute a 90-degree turn.
Alternate Instructions
California residents: click here
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Jeff: Hello, everybody. This is Jeff from etrailer.com. Today, we're going to take a look at this Demco 5th Wheel Rail Adapter for the Chevrolet and GMC OEM 5th Wheel Towing Prep Package. Has a 21,000 pound weight capacity. Now this is a custom fit part. It is designed to fit the 2016 to 2019 Chevrolet Silverado and the GMC Sierra 2500 and 3500 trucks with the six and a half foot bed and the factory rail kit.
Basically, this will convert your factory-installed, under-bed fifth wheel mounting kit from Chevrolet or GMC to a standard above-bed, fifth wheel base rails. So it will let you use your fifth wheel trailer hitch that attaches to the standard above-bed rails.This does come just like this as all one piece. There's no assembly required, and it is designed to mount to the OEM pucks or the sockets that's in your truck bed. Basically this whole unit will just drop into the four pucks and the center ball hole, and it locks into place. There's no drilling or welding required.
Basically to install it, just remove the puck covers from the factory kit in your vehicle. And then what you'll do is remove this thumb bolt right here and the washer. And you'll just turn this turnplate till it's parallel to the rails, and that'll release the ball bearing system that's in the shank on here.So when you go to drop this in, the pucks will drop into place, and this will go right into the ball hole. And then to lock it, you just take this turnplate here, turn it a quarter of a turn till it goes front to back, take your thumb bolt with your washer. Line it up with one of the holes and then just go ahead and tighten that down.
And when you tighten that down all the way, that will lock that ball-bearing system that's in the shank and keeps us from coming out of the ball hole.Now, this is a rust resistant black powder coat steel construction. It is made in the USA. Specs again on this, it'll fit the Chevy or GMC trucks that have the OEM under-bed base rails and the six and a half foot beds. Now, if you do want to get this adapter to work for an eight foot bed truck, we do sell that part separately. It is part number DM6206, and that'll fit the eight foot bed trucks.
Again, the maximum capacity on this is 21,000 pounds. And one last note on this adapter is this will not work with the B & W Patriot Sliding Hitch. But that should do it for the review on the Demco 5th Wheel Rail Adapter for the Chevrolet and GMC OEM 5th Wheel Towing Prep Package.
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