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Demco Autoslide Capture Plates for Trailair Rota-Flex and Lippert Road Armor Pin Boxes
Demco

Demco Autoslide Capture Plates for Trailair Rota-Flex and Lippert Road Armor Pin Boxes

Part Number: DM6171
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$52.99
Retail:$62.07
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Replaces the capture plates on your Demco Autoslide fifth-wheel trailer hitch so that you can use it with a Rota-Flex or Lippert Road Armor pin box. Plates prevent the king pin from rotating inside your trailer hitch. 1-800-940-8924 to order Demco accessories and parts part number DM6171 or order online at etrailer.com. Free expert support on all Demco products. Great prices and Fastest Shipping for Demco Autoslide Capture Plates for Trailair Rota-Flex and Lippert Road Armor Pin Boxes. Accessories and Parts reviews from real customers.
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  • Reviews (129)
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Demco Accessories and Parts - DM6171

  • 5th Wheel Hitch
  • Plates
  • Side Plates
  • Demco

Replaces the capture plates on your Demco Autoslide fifth-wheel trailer hitch so that you can use it with a Rota-Flex or Lippert Road Armor pin box. Plates prevent the king pin from rotating inside your trailer hitch.


Features:

  • Capture plates prevent your king pin from pivoting inside your Demco Autoslide 5th-wheel trailer hitch
    • Required for use with your Trailair Rota-Flex pin box
    • Also works with Trailair Air Ride and Lippert Road Armor pin boxes
  • Fast and easy installation
    • Brackets replace capture plates that came standard on your hitch and secure with existing hardware
  • Made in the USA
  • 5-Year limited warranty


6171 Demco Hijacker Auto Slide Locking Plates for Trail Air Rotaflex and Lippert Road Armor Kingpin Boxes

Replaces DM14743-95

Installation Details DM6171 Installation instructions


California residents: click here


Video of Demco Autoslide Capture Plates for Trailair Rota-Flex and Lippert Road Armor Pin Boxes

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for The Low-Down on the Demco Autoslide Capture Plates for Trailair Rota-Flex Pin Boxes

Today, we're going to take a look at the Demco Hijacker Autoslide capture plates for the Trailair Rota-Flex Pin Boxes. Now, these capture plates will prevent your king pin from pivoting inside your Demco Hijacker Autoslide Fifth Wheel Trailer Hitch, and these are required for use with the Trailair Rota-Flex pin box, but they will also work with the Trailair Air Ride pin boxes. They are a fast, easy installation. Comes with a nice set of instructions on how to install them. Basically, these brackets will replace the capture plates that come standard on your hitch, and they secure with the existing hardware. These capture plates are actually taller and longer than the factory capture plates on your hitch, which allows the auto function of the hitch to operate without a delay.

These parts are made in the USA. But that should do it for the review on the Demco Hijacker Autoslide Capture Plates for the Trailair Rota-Flex Pin Boxes..

Customer Satisfaction Score:

Ratings & Reviews

4.8

129 reviews
Replaces the capture plates on your Demco Autoslide fifth-wheel trailer hitch so that you can use it with a Rota-Flex or Lippert Road Armor pin box. Plates prevent the king pin from rotating inside your trailer hitch.

by:

Much thicker than original capture plates, works well with roto hitch



by:

The stock guide plates will work. That being said, these help so much more! The are taller and longer. This guides and captures the kingpin better. By covering more of the king pin with these rails it allows the auto function of the hitch to operate without a delay. The delay in operation was something I experienced with the stock rails. That is what caused me to start searching for something better. Happy to have found these!

Tony S. profile picture

Tony S.

6/17/2018

After a year and lots of towing miles later, they are still working great!



by:

They fit perfectly on the Demco autoslide. They are quite a bit larger so they will contact the rigid part of the rotoflex pinbox.

Letteer  profile picture

Letteer

11/11/2021

These are still working perfectly. I have decided it is easier to take them loose every time I hook up, then snug them after hooking. Just the design of the autoslide mot the capture plates.



by:

This plates are heavy duty and work well



by:

Worked well since day 1.



by:

So far all is good



by:

item was just what i ordered



by:

Fast shipping and exactly what I needed.



by:

tech support was awesome and I learned alot from them!



by:

Should work perfect



by:

Item was delivered on time by UPS.

Tommy profile picture

Tommy

9/3/2024

Love the 5th wheel. I hope your deliveries have been improved. If you read my previous post, you’ll know that you cannot depend on the delivery dates that they give you. Don’t get in a hurry if you need it quickly, it won’t happen.



by:

etrailer is always great to work with and their help with these capture plates for my pin box is yet another example of that. That said, like some of the other reviews that I read prior to purchasing these plates, I wonder why Demco doesn't just put these on from the factory. They are awesome and would work great with or without the flex pin box.

Thanks etrailer.

Mark profile picture

Mark

2/10/2022

We’ll, here we are after a year and my Demco capture plate are still working perfectly. I highly recommend them.



by:

I don’t know why they don’t just build the hitch with these on them from the factory



by:

Easy installation onto my Demco Hijacker Autoslide 18K and a much easier and safer looking connection to my Denali with the Trailair Rota-Flex Pin Box.

Gary P. profile picture

Gary P.

3/23/2019

Satisfied. Makes connection much easier



by:

Purchased the Demco Hijacker Autoslide 5th Wheel Trailer Hitch w/ Slider - Single Jaw - Above Bed - 18,000 lbs
Item # DM8550034 for our Nissan Titan XD pro4x. After reading about 5th wheel pin boxes, I call to see if the factory capture plates would work for our new Keystone Cougar Pinbox. I called, spoke with Cailee V in customer service. Cailee was not 100% sure. She got my information, called Keystone to see how the pin boxes were set up. She followed back up with me the next day and advised I needed to purchase the capture plates for the roto-flex pin box. Order and they arrived in 2 days. Fit my hitch perfectly. Great Customer Service, thank you Cailee, great hitch/mounting bracket and capture plates.



by:

Hitch arrived in excellent condition. I was a little disappointed at how long it took to arrive, but with the pandemic going on, I understand. This is an excellent hitch. It definitely requires a second set of hands to drop it into the puck mounting system in the truck. My wife and I picked our 5th wheel up this past Saturday and brought it home to get it cleaned up for our trip. Very smooth and very quiet. Much better than our last manual sliding hitch. The only negative from me is that I was missing 2 of the pins that hold the arms in the locked position. Supposed to be 4 and we only had 2.



by:

These look much more substantial than the original ones. I have not actually used them yet but believe they will work very well.



by:

This tightens the contact with the rota flex!



by:

Thanks for having this hard to find product, it would have been nice if the salesman at the RV dealership would have known I needed to upgrade to the larger capture plates but your website was so helpful even providing a video that answered all my questions. Product was delivered faster than expected and was just what I needed. Thanks



by:

Perfect with my replacement head. important with Trailair Flex Air 5th Wheel Pin Box equips my FW.



by:

bigger and longer then original capture plates. perfect fit.



by:

They look good. I'll be more frank on how they fit and work are after installation.



by:

Fit perfectly into the Demco Hijacker Hitch.
Easy
to install.

Shipping was extremely fast from etrailer / Mariah A. (thanks for that)



by:

Much bigger than the stock capture plates. Simple plug and play and easy to hook up to the Rotaflex kingpin on my trailer.



by:

everything works great , on the hitch head underneath there's a blue stopper for letting the head stop, they keep splitting and I have call Demco support on this problem and I have paid for a couple and they I sent me a couple at no charge. Have to change one about very two campground stop. Very upsetting do have to do this.If you have any questions please let me know .


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See what our Experts say about this Demco Accessories and Parts

  • Troubleshooting Demco Hijacker Autoslide Making Noise
    How old is the hitch? Does your fifth wheel have a standard pin box or a cushioned pin box? Has it been lubricated? Does the locking bar automatically lock when the jaw closes? The thing that comes to mind immediately is the capture plates may not be adjusted properly. They MUST be evenly on both sides to 1/8" more than the width of the pin box.
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  • What Does Demco Hijacker Autoslide and Rail Kit for 2019 Chevy Silverado 3500 Weigh
    The combined weight of the Demco Hijacker Autoslide 5th Wheel Trailer Hitch w/ Slider - Single Jaw - Underbed # DM8550022 and the rail kit part # DM8551010 that fits your 2019 Chevy Silverado 3500 short bed is 374 lbs. You should note that this does not count against your payload as that is the weight capacity of the truck bed whereas this attaches to the truck frame directly for supporting the weight.
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  • Can A Trailair Air Ride Pin Box Be Used With Demco Autoslide 5th Wheel Trailer Hitches
    Hi Michael, Yes, the Trailair Air Ride 5th Wheel King Pin # UF35-946219 can be used with a Demco Autoslide hitch like the # DM6077, you'll just need to swap out the capture plates on the hitch with part # DM6171 to fit the Trailair pin box. I do recommend checking your trailer's bolt pattern first though before purchasing the # UF35-946219 as each trailer has a specific bolt pattern that fits it. If you don't know yours then look for a white sticker that lists the RPO, serial, and LCI...
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  • Recommended Capture Plates for Trailair Rota-Flex Pin Box with Demco Hijacker Autoslide
    It looks like you might have a Trailair Roto-Flex 5th Wheel Pin Box like # LC328330. I do recommend confirming this by locating the model name of your existing pin box. If this is the case, then to use the Demco Hijacker Autoslide 5th Wheel Trailer Hitch # DM8550034 referenced in your question, you will just need to add the Demco Hijacker Capture Plates # DM6171. These capture plates are designed specifically for the Trailair Rota-Flex pin boxes and will prevent the king pin from pivoting...
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  • Recommended Sliding Fifth Wheel Hitch For A 2018 Ram 3500 Towing Multiple 5th Wheel Trailers
    Since you have a short bed 2018 Ram 3500 you will most certainly need a sliding fifth wheel hitch to prevent the nose of the campers from taking out the cab of your Ram when you have to make a sharp turn. Since you'll be doing this a lot you'll want to spend the extra money and get the Demco Autoslide 5th Wheel Trailer Hitch w/ Slider # DM8550035. This hitch has an autoslide feature which will allow the head to automatically slide back as you turn so that you don't have to constantly get...
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  • Is a Wedge Available for a Trailair Pin Box to Use with the Demco Hijacker Autoslide 5th Wheel Hitch
    Although there are some wedges that Demco offers to use in conjunction with the Demco Hijacker Autoslide, like part # DM8550035, the wedges are made for specific specialty pin boxes and won't work with a standard pin box. For a standard pin box you need to use the capture brackets that already come with your 5th wheel hitch. If you want to upgrade your pin box to one that uses an air bag or shock to help enhance your towing experience just let me know what your pin box number is (like...
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  • What Flexair 5th Wheel Pin Box Fits My 2021 Grand Design Reflection 337RLS?
    Yes. You will have to use the Demco Hijacker Autoslide Capture Plates for Trailair Rota-Flex Pin Boxes # DM6171 on your 2021 Grand Design Reflection 337RLS. As far as which Curt Flexair works for your trailer, it depends on what pinbox you currently have installed. If you have the Lippert 1621 pinbox, you need the # LC328492. If, however, you have the Lippert 0719, you need the # LC328484. In order to confirm which pinbox you have, I attached highlighted diagrams that show the measurements...
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  • Install Instructions for Demco Hijacker Autoslide Capture Plates # DM6171
    I attached a picture that shows the install instructions for the Demco capture plate adapter part # DM6171 for you to check out. You do have to remove the old screws to get the old plates off to install this kit.
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  • Is a Capture Plate Needed to use Demco Hijacker With Trailair Flex Air on 2017 Ford F-250?
    I spoke with a representative of Demco who confirmed for me that you will need to use Demco Hijacker Autoslide Capture Plates # DM6171 along with the Demco Hijacker # DM8550024 fifth wheel hitch if you have a Trailair Flex Air such as # LC328492. The Hijacker Autoslide # DM8550024 is a confirmed fit for your 2017 Ford F-250 with the factory prep package; I've added a link to a video review of the hitch and capture plate for you to take a look at as well.
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  • Is There Adapter to Use Demco Hijacker with Road Armor Pin Box
    Hey Jeffrey, since you have the Road Armor pin box the correct capture plate adapter for the Demco Hijacker is the part # DM6171. There also is no reason a higher rated Hijacker couldn't be used with a lower weight trailer.
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  • Upgrading Demco Autoslide From 18k to 21k
    If you want to upgrade your # DM8550024 to the 21k model you can with the Replacement Head and Base Assembly # DM6107. You already have the side plates # DM6033 so there is no reason to purchase them again with the full # DM8550038. The savings isn't huge but every bit helps. Since you have a Rota-Flex on the trailer you will also need the Demco Autoslide Capture Plates for Trailair Rota-Flex Pin Boxes # DM6171.
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  • Fifth Wheel Hitch for 2009 GMC Sierra That Allows 90 Degree Turn
    I'm not quite sure what you are asking; is it about what wedge to use or is it about if you can use a Sidewinder with your current hitch? Either way I do need to know the model number of your hitch, which should be somewhere on the hitch itself.
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  • Recommended 5th Wheel Trailer Hitch For A 2024 Chevy Silverado 2500 With OEM Prep Package
    We always recommend using a sliding hitch whenever the bed of the truck falls down to the 6' range. From there you'd just need to decide if you want a fixed slider or automatic slider, which really depends on how much you'll be needing it. With your trailer being forty feet in length you'll most likely have to pull really ride and then go into a bit sharper of a turn to maneuver around so an automatic slider like the Demco Autoslide 5th Wheel Hitch w/ Slider - Chevrolet/GMC Prep Package...
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  • Do I Need a Capture Plate for a Rota Flex Pin Box?
    Yes, you do. The correct one to use with the Demco Autoslide item # DM79GV is the Demco Autoslide Capture Plates for Trailair Rota-Flex Pin Boxes item # DM6171. The Demco Autoslide 5th Wheel Hitch w/ Slider item # DM79GV you were looking at is confirmed to fit the puck system of the 2024 GMC Sierra 2500.
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  • Capture Plate Kit Needed For A Demco Hijacker And Pin Box Connection
    If you're referring to the locking plates that sit on the head of the Demco Hijacker and clamps onto the pin box to lock the head to it then you'll need part # DM6171 if you have a Trailair or Rota-Flex pin box or part # DM76FR if you have a Lippert Rhino pin box. Based on your description of the pin box you most likely have the Lippert Rhino so you'd want to go with the # DM76FR. If it is a Rhino then it will should have Rhino labeled on the sides and possibly also the front.
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  • Are Capture Plates Needed When Using the Demco Autoslide With a Lippert Road Armor Pin Box
    Yes, you are going to also need the Demco Autoslide Capture Plates for Trailair Rota-Flex Pin Boxes # DM6171 when using the Demco Autoslide 5th Wheel Trailer Hitch w/ Slider # DM8550040 with your Road Armor pin box. For a suspension enhancement I recommend checking out the SumoSprings Rebel Custom Helper Springs # SSR-129-47-2. These springs do not require air, has 5,000 lb of load leveling capacity, an easy bolt on install, and is made proudly in the USA.
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  • Is Demco Hijacker Autoslide 5th Wheel Hitch Compatible with Rota-Flex Pin Box
    Yes, the Demco Hijacker Autoslide 5th Wheel Trailer Hitch w/ Slider, like the 18K # DM8550034 for industry standard beds, will work with the Rota-Flex pin boxes when you use the Capture Plates # DM6171.
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  • Recommended Capture Plates For Attaching A Road Armor Pin Box To A Demco Autoslide 5th Wheel Hitch
    The Road Armor pin box is just like the Trailair Rota-Flex so you'll need the Demco Autoslide Capture Plates for Trailair Rota-Flex Pin Boxes # DM6171 in order to lock your pin box to the head Demco Autoslide 5th Wheel Hitch # DM79GV and prevent it from pivoting. These will simply swap out the factory capture plates that you currently have.
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  • Using A Lippert Turning Point Pin Box With A Demco Autoslide 5th Wheel Hitch
    The reason the Demco Capture Plates # DM6171 aren't working with your Lippert Turning Point pin box is because they were specifically designed for Trailair Rota-Flex pin boxes. Since you have a Demco Autoslide # DM8550037 you'll need to lockout your Turning Point pin box and allow rotation only at the hitch to king pin connection point. To do this you'll need to install two 5/8" - 11 x 2" in the lockout holes in the back of the pin box.
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  • Recommended Demco Autoslider For A 2015 Ford F-250 Super Duty And 2021 Heartland 5th Wheel
    For your 2015 Ford F-250 Super Duty with a 6-3/4 Foot Bed with OEM Prep Pkg you'll want to use the Demco Hijacker Autoslide 5th Wheel Hitch w/ Slider - Single Jaw - Ford Super Duty Prep Package - 18K Item # DM8550024. It will drop right into your puck system without needing any adapters and allow you an extra 14" of clearance for tight turns with your 2021 Heartland 5th Wheel automatically. The puck system is a below bed design and makes installation super simple and easy. To fit with...
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  • Capture Plate for Lippert Trailair Rota-Flex Pin Box and Demco Hijacker Autoslide 5th Wheel Hitch
    I believe that you are referring to the Lippert Trailair Rota-Flex 5th Wheel Pin Box like part # LC328329 which has the pivoting head. If this is the case then yes, the Demco Hijacker Autoslide Capture Plates # DM6171 are what you need to use so that you can use the Demco Hijacker Autoslide like part # DM8550034. Attached is a picture and review video of these 3 products installed together for you to reference.
    view full answer...
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  • Demco Hijacker Autoslide 5th Wheel Hitch Makes Loud Bang When Turning Or Stopping
    For your Demco Hiijacker Autoslide 5th Wheel Hitch # DM8550024, it sounds to me like you need to adjust your capture plates. According to the owner's manual you're supposed to measure the width of your pin box, and set the capture plates 1/8" wider between the capture plates. It also could be because you do not have the correct capture plates installed. If you have a Trailair Rota-Flex pin box or a Trailair Air Ride pin box, then you will need # DM6171.
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  • B&W Companion or Demco Hijacker 5th Wheel Hitch for 2020 Ram 3500 With Factory Prep Package
    To answer your first question, yes, the B&W Companion 5th Wheel Trailer Hitch with Slider for Ram Towing Prep Package # BWRVK3670 is absolutely compatible with a Trailair Rota-Flex pin box. And the Companion is definitely the option I recommend for your 2020 Ram 3500, and there are a couple of reasons for that. The first is that the Companion is totally compatible with your truck and Rota-Flex pin box as it comes. However, if you were to get the Demco Hijacker Autoslide # DM8550034 (18,000...
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Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Michael H
Expert Research:
Michael H
Employee Jameson C
Expert Research:
Jameson C
Employee Adam R
Expert Research:
Adam R
Employee Jeff D
Installed by:
Jeff D
Employee Brent H
Installed by:
Brent H
Employee Joshua S
Video Edited:
Joshua S
Employee Wilson B
Updated by:
Wilson B
Employee Kristina F
Updated by:
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Employee Michael B
Updated by:
Michael B
Employee Isabelle B
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