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Adjustable Tailgate Support Bars

Adjustable Tailgate Support Bars

Item # GK37FR
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Our Price: $228.28
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Adjustable support bars replace your factory cables and allow you to position your tailgate at 8 different angles. Makes hauling dirt bikes or long loads safer and more convenient. Works great with tonneau covers and camper shells. Lowest Prices for the best tailgate from Gate King. Adjustable Tailgate Support Bars part number GK37FR can be ordered online at etrailer.com or call 800-298-1624 for expert service.
  • All Info
  • Reviews (6)
  • Q & A (1)
  • Videos (2)
  • Photos
  • Why etrailer?

Gate King Tailgate - GK37FR

  • Tailgate Assist
  • Truck Tailgate
  • Gate King

Adjustable support bars replace your factory cables and allow you to position your tailgate at 8 different angles. Makes hauling dirt bikes or long loads safer and more convenient. Works great with tonneau covers and camper shells.


  • Support bars allow you to adjust your tailgate at 8 different angles to meet your hauling needs
    • Lower tailgate and engage latching pin on each side
    • Lift your tailgate until you hear the click at your desired height
  • Designed to make carrying your load safer and more convenient
    • Angled tailgate works as a wheel chock when hauling dirt bikes or ATVs
    • Haul long cargo safely with a tonneau cover or camper shell
  • Support bars take the weight leaning on your tailgate
    • Alleviates the stress on your tailgate latching mechanism
  • Easy installation - no drilling required
    • Replaces your factory tailgate cables - uses existing bolt holes
    • Mounting hardware included
  • Heat-treated, durable stainless steel construction
  • Weather-proof coating resists rust and corrosion
  • Made in the USA


  • Quantity: 2 support bars (1 left and 1 right configuration)
  • 3-Year limited warranty

Note: Gate King adjustable tailgate support bars do not replace the need for ratchet straps or tie-downs. Support bars will not work with most after-market slow-release bars and may not work if your truck's tailgate is either bent, dented, or misaligned.

490318 Castel Innovations Gate King Tailgate Position Adjuster

This Product Fits The Following Vehicles

Video of Adjustable Tailgate Support Bars

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

Video Transcript for Gate King Adjustable Tailgate Support Bars Review

Hey guys, John here for etrailer.com. And today we are going to be taking a look at the Gate King Tailgate Adjuster to demonstrate how the Gate King works. Let's first see what our tailgate acts like without the Gate King installed. So this operation will be normal with the gate team. When we push our tailgate back up and in place, that's where the Gate King will stop it so we can basically put pressure or anything in the back of our pickup or to hold things up in place. With just our cables here our tailgate's going to fall down at any angle that we have at, until we put it up, back in place.

So with the Gate King installed now so let's see how it performs compared to how our initial tailgate was working. So we can still operate it like normal down and pushing it back in place.But when we want to use the Gate King, pop the pins here, and now we can adjust it at different stopping points all the way, depending on what kind of cargo we have in our truck bed. This is a keeper pin and so when we push this down and in place that unlocks, this allows us to use our tailgate as normal otherwise, we can reset the entire function by lifting our tailgate completely into place and this here presses the pin all the way into that clip so then we can use our tailgate as normal. It allows us to adjust their tailgate to different levels so, that way we can accommodate a wider variety of cargo. Here, we have our paddle board in the back of our pickup, and instead of the paddle board sitting straight out, we now have it elevated so it sits up out of the way.

And it's a little more visible for other people who are on the road.Here we have a 10 foot ladder in the bed of our pickup. And while we're able to kind of wedge the bottom of a ladder under our toolbox and then press this up so it doesn't move a whole lot up and down yet there is still free movement here so it's always a good idea to use some tie-down straps to secure whatever kind of cargo we still have in the bed of our truck. So the Gate King replaces the cables that we normally use for our tailgate. And while it doesn't increase the weight capacity of our tailgate, we're still able to use the tailgate as normal. So any load you normally put on it, like sitting on it, or maybe a cooler or something like that, and you still do that safely.Our kit comes with two Gate Kings, one for either side of the tailgate, two stabilizers, four bolts, four washers, four spacers, our release key as well as a hose clamp to keep our tailgate in place for when we have it set at a 45 degree angle.

For install, first thing we need to do is lay everything out so we can make sure we have everything in place. Our instructions has some easy steps on one side, as well as the list of parts and some tips for installing for like this compared to a whole notebook that we have to open and keep flipping pages, it's all right here. We also need some Torx bits and Allen bits, a pair ratchet as well as a Flathead screwdriver for installing the hose clamp. So it's very minimal amount of tools that we need. First thing we need to do is remove our tailgate cables for that.

We use the Torx bit one bolt up here, we'll have another one on the side of the tailgate. With the top removed, we'll go ahead and remove this bolt that's on the tailgate itself.We're ready to install the Gate King. When we go to position this, make sure that the pin is up on this arm, that's facing our cab. And then the silver plate here is facing towards the inside of our bed. And then the long, the long arm with this clip that sticks straight out that one is next to our tailgate like this. I'm going to install the top bolt first. So it's going to be the larger of the two. We'll put our, nope. I'm going to install the top bolt first so it's the larger of the two bolts and we will put our slides plate in place, the bolt through. And then we're on the other side, we're going to add the spacer for the larger bolt and then our two washers. And then before we start installing this, we're also going to add some thread locker and that is going to help keep our bolt in place for when we're driving down the road and we have the vibration from the road. Thread it by hand. Then We'll grab our ratchet here, tighten it down.Here at the lower end we'll put our spacer in place. Put the bolt through. We'll add just a little bit of thread locker before installing this bolt. You might have to lift your tailgate up just a little bit to get this started. So you don't have any pressure on that bolt. Again, though we'll thread it in as much as we can by hand and grab our ratchet, finish it up. Everything tightened down, we'll go ahead and repeat the same process for the other side of our tailgate.So the last thing we need to do is install this basic hose clamp this goes over this socket portion where our tailgates is attached to our truck. So we actually lift our tailgate to about a 45 degree angle. We can lift it off of these hinges. So this prevents that from happening because with our Gate King system, we can stop the tailgate at different angles. If we stop it at the 45 degree angle, then we're in danger of the tailgate popping off of that socket there. So this helps prevent that. Tighten that down to help keep our two gate in place. So, that's going to complete our look at the Gate King Tailgate Adjuster. Thanks for watching.

Customer Reviews

Adjustable Tailgate Support Bars - GK37FR

Average Customer Rating:  4.7 out of 5 stars   (6 Customer Reviews)

Adjustable support bars replace your factory cables and allow you to position your tailgate at 8 different angles. Makes hauling dirt bikes or long loads safer and more convenient. Works great with tonneau covers and camper shells.

- GK37FR

This product works great. I'm able to adjust my tailgate to help me haul lumber or anything large in my short bed truck. Because it's easy to use, simple to install and heavy-duty, I would recommend this product to anyone needing more versatility out of their truck bed.

- GK34FR

Review from a similar Adjustable Tailgate Assist in Tailgate

For the price I expected less slop in the action as it opens, slaps against the tailgate. However, once extended or locked it is good. Remember to also use the spacer from your original cables (2019 Silverado) you will need them on the top bolts. The retaining clips (spring steel) were not tight enough so every third or forth closing/opening the ratchet would engage on one of the support bars. Simply squeezed them both with pliers to create a firmer fit. See one of the photos submitted showing the clip.

- GK74FR

Review from a similar Adjustable Tailgate Assist in Tailgate

This is made to a very high standard. It performed like it was standard equipment on our truck. As soon as we installed it, we went to the hardware store and purchased lumber for a project. Worked excellent. It held the lumber up against the tanno cover. Didn't even need to tie the load down. Excellent product. Next I'll load my motorcycle in my truck and see how good it holds up. Can't wait

- GK74FR

Review from a similar Adjustable Tailgate Assist in Tailgate

Got it today and already installed. Will make a difference when carrying my UTV in the truck bed.

- GK74FR

Review from a similar Adjustable Tailgate Assist in Tailgate

- GK74FR

Review from a similar Adjustable Tailgate Assist in Tailgate

This is a very good product, however it’s way too expensive for the pair I can’t recommend it because of the cost. In my opinion it’s at least double the cost of what it should be.


Ask the Experts about this Gate King Tailgate

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Info for this part was:

Employee Chris R
Video Edited:
Chris R
Employee Daron K
Edited by:
Daron K
Employee Jonathan Y
Video by:
Jonathan Y
Employee Jon G
Test Fit:
Jon G
Employee Kristina F
Updated by:
Kristina F
Employee Alex H
Written by:
Alex H

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