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Curt Custom Fifth Wheel Installation Kit for Chevy/GMC - Carbide Finish

Curt Custom Fifth Wheel Installation Kit for Chevy/GMC - Carbide Finish

Item # C16411-204
Our Price: $236.89
Fifth Wheel Installation Kit

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Install your fifth wheel trailer hitch in half the time with this custom bracket kit. Requires less drilling than universal kits and provides a custom fit for your . Includes everything you need for installation. 1-800-940-8924 to order CURT fifth wheel installation kit part number C16411-204 or order online at Free expert support on all CURT products. Great prices and Fastest Shipping for Curt Custom Fifth Wheel Installation Kit for Chevy/GMC - Carbide Finish. Fifth Wheel Installation Kit reviews from real customers.
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2016 Chevrolet Silverado 2500 - Curt Custom Fifth Wheel Installation Kit for Chevy/GMC - Carbide Finish

  • Above the Bed
  • CURT
  • Custom

Install your fifth wheel trailer hitch in half the time with this custom bracket kit. Requires less drilling than universal kits and provides a custom fit for your . Includes everything you need for installation.


  • Custom brackets mount beneath your truck bed to provide attachment points for 5th wheel rails
  • Base rails sit in truck bed and allow installation of 5th wheel trailer hitch
  • Custom fit - brackets mount to existing holes in your vehicle's frame
    • Minimizes drilling
    • Installation time is cut in half, compared with universal bracket systems
  • Complete kit includes brackets, rails and hardware
  • Visible rails have carbide finish to match your Curt Q5 fifth wheel hitch
  • Compatible with B&W, Curt, Draw-Tite, Hidden Hitch, Husky, Reese, and Valley above-bed 5th-wheel trailer hitches

16411 Curt Custom Fifth Wheel Bracket Kit

16204 Curt Universal, Carbide Fifth Wheel Base Rails

Replaces 16413-204

Installation Details C16411-204 Installation instructions

Video of Curt Custom Fifth Wheel Installation Kit for Chevy/GMC - Carbide Finish

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

Video Transcript for Curt Fifth Wheel Kit Installation - 2016 Chevrolet Silverado 2500

Today on our 2016 Chevrolet Silverado 2500, we're going to take a look at, and also show you how to install, the Curt Custom Fifth Wheel Installation Kit with carbide finish. The part number is C16411-204. Now, this is what our custom side plates look like installed. You see these bolt directly to the frame using some M16 bolts that go right into weld nuts. That allows for excellent connection points between our frame and the end of our rails up here on each side without the need to drill out the frame or make any kind of modifications. As you can see, the carbide finish is going to give you a nice clean look. We got good sturdy rails and it's gonna offer the three different widths: the outer, middle, and inner widths that are very typical with most standard fifth wheel hitches.

This is going to work out well with, of course, the Curt. But also Reese, Valley and several other types of fifth wheels. So it will allow us to safely haul a fifth wheel trailer. Now, we put this one in a short box. Always a good idea for a slider or something that gives you extra room behind the cab.

In a long bed, you'll have to just do the measurements and see how it works out. There are also gooseneck plates that are designed to drop right into our pinned locations here. That'll give you a gooseneck ball in the middle that is kinda interchangeable with your fifth wheel. Now from the top of the beds corrugation to the top of the rails, we've got about a one inch difference there. Now the rails are a nice heavy duty steel material. They've got a solid black powder coat finish on them.

The hardware is gonna be corrosion resistant. So, this should look good in the back of our truck for quite a few years. Now, to begin our installation, we need to get our forward rail positioned in the truck bed. We've got a couple different measurements depending on the long box or short box situation. You need to measure from that rear edge to the back edge of our rail here. You'll notice this truck has a spray in bed liner.

You need to account for the thickness of that as well. Not only do we need to get this squared, front and back here, but this is also going to need to be squared up side to side. So you measure over from our wheel well. Once we have this in the appropriate position, we need to mark the center of each of our hole locations. We'll be using the middle one, here in the back side and then the two on each end. Now we can center punch those, just keep our drill bit from moving around. Now, we're gonna take just a 1/8th inch drill bit, a nice small drill bit, and drill out one of our holes. We'll makes sure that these are matching up with our side plates. Now, depending on your vehicle, you may or may not have these fender liners that are kinda inside of the rear wheel here. If you do have them, there's gonna be 14 little torque screws that kinda go around the edge here and also across the back side. You want to get all those taken out and then get that fender pulled down. This is what it's gonna look like. You'll need a T15 torx bit to get them out. Now we can grab our side plate, we'll need to mock it up. We want the larger bracket. The smaller one in the front here, the larger one in the back. We want that towards the back. And then they should loop in over our frame. Once we have that in position, you're gonna notice we've got one of these round holes well nuts that already exist in the frame, so we're just gonna use the provided hardware, put a flat washer and lock washer on it. Then we can thread that in. Put one there in the back and also one right up here in the front. Now it's time to verify that the hole we created in the back does line up with the rear hole in our bracket here. Once we've confirmed that our hole does line up with our side plate, we're gonna move up to the quarter inch drill bit. Drill out each of our holes and then use a step drill bit to bring it up to 9/16'ths of an inch. Now we're gonna clean up our mess here and we're gonna touch up each of the holes with a little bit of rust preventative spray paint just to prevent rusting and things like that. Then we'll position our rail back over top of the holes. Now we're gonna start getting our bolts in position. For the medal one here, since it's in the middle of the corrugation, the bolts just going to pass down through. For the outside hole, since it's in the lower portion, we need to put our U-shaped spacers underneath there. It's gonna prevent the rail from crushing the bed and then, just like we do with the center, our bolts will just slide in. Since our bolt was in the top of the corrugation on the top, we're gonna be putting another U-shaped spacer here on the bottom. We'll follow that up with our square-hole spacer. And then we can thread on our flange nut. We're gonna use this to just kinda anchor that rail down. Hand tight is really all we need to do. Then we need to add on a square-hole spacer and a flange nut to the other four bolts, the two we have on each side. We're gonna go through, we're gonna snug up that forward rail. Last up is gonna be getting everything torqued down. Now we just really want to hold it down into position. Now we're gonna grab the rails with whatever your fifth wheel arms or your leg inaudible 00:06:03 are gonna be. We're gonna position in the front rail and match that up to the rear rail. Now, once we have this in, we want to pull it as far forward as we can so we have good pressure there. And then we need to measure our wheels wells again, going side to side. And then we're gonna repeat the exact same process for the holes in this rail, although this time we need to use the holes that are the second set from the outside. Not all the way to the outside. We're going one set in from that. Now since these bolt holes all in the top side the U-shaped spacers we'll go on the bottom. We're going to take our spacers. Those are going to go between the brackets and the bottom of the bed. That gives us that gap that we need. Then, just like we did on the forward, we put on our square-holed spacer lock and one of our flange nuts. Now we'll go through and get each of our bolts torqued down to the specifications, which are listed in our instructions. We'll start with the 1/2 inch bolts then we can move to the M16's that went into the frame rails. With everything torqued down, if you had to remove them, we'll put the side skirts back down on the fenders here. Kind of push them up into position around then edge and start lining up the holes. We'll just go through and get all of our screws started here and then just snug them down. That's gonna complete our installation of the Curt Custom Fifth Wheel Installation Kit, part number C16411-204 on our 2016 Chevrolet Silverado 2500.

Customer Satisfaction Score:

Customer Reviews

Curt Custom Fifth Wheel Installation Kit for Chevy/GMC - Carbide Finish - C16411-204

Average Customer Rating:  4.8 out of 5 stars   (306 Customer Reviews)

Install your fifth wheel trailer hitch in half the time with this custom bracket kit. Requires less drilling than universal kits and provides a custom fit for your vehicle. Includes everything you need for installation.

2013 Chevrolet Silverado

Just installed my curt 5th wheel kit,all materials are heavy duty and comes with all hardware needed. Installation is straightforward for the average DIY . The only challenge in the installation of the kit is getting the right tool to torque the rail bolts. My truck is a 2013 chevy Silverado 2500HD. I would recommend this kit.

2012 Chevrolet Silverado

I feel that the installation video simplifies the process to much. Attaching the frame plates with the bolt fish wire was more difficult than the video showed. I am to blame for the first bolt. We started on the left side and fished the back bolt first. I did not check to see if the wire would go through both plate and bolt once threaded onto the bolt. I just placed the plate on the wire and then threaded the bolt onto the wire and pulled or tried to pull it through the frame hole. The wire was "bunched" on part of the bolt and would not feed through the frame and the plate holes. I stretched the wire to the point I thought I was going to lose the bolt in the frame. We ended up getting the bolt back out and using the other fish wire to feed this bolt through. We made sure we could fit both the plate and bolt through together before fishing it through the frame. Once we did one the other three went a lot easier but we only had one fish wire to use.
I had watched the installation video several times and played it while we were working. The video is good but it makes the process seem to easy.
I would like to see the video have more details about this process and have 4 fish wire instead of 2 or tell people you may want to have two more on hand for piece of mind.

Jeff L.


After a year and around 7,000 miles pulling our fifth wheel camper, I love the hitch. I have not had to use the sliding portion but glad we have it if we need it

2018 Chevrolet Silverado 2500

Kit was missing some of the bolts, nuts and washers. I had to go to Lowes and find what I needed to complete the installation.

Etrailer Expert

Jenny N.


The kit should not have been missing hardware. I will have our Customer Service team reach out to you.

2017 Chevrolet Silverado 2500

Bought this rail setup over others because of price and that the profile is smaller than other models out there. Rails only stand 1-1/8" tall. I installed on a 2017 silverado 2500hd with an 8' box. I thought going in this would be an easy installation, but I was wrong, I feel like I had an easier time with the universal rails on my previous pickup. The shape of the brackets that bolt up to the frame make it so you can't get a wrench at the nuts anywhere but the inner side of the frame rails. The rear rail wasn't too bad to torque hardware, but the front rail hardware was a real pain to torque. Be sure to lower the spare tire. The driver side has the gas tank in the way, the passenger side has the heat shield. I found it a little easier when I removed the 1 bolt on the top of the frame holding the heat shield down, it made it so I could reach both hands up there to get the washer and nut on. Would highly recommend having a 3/4" crows foot socket to tighten the nuts that secure the rails down. I was not able to get a socket on them at all (love how the install video shows torquing the easiest nuts). I also had trouble bolting the brackets to the frame with the existing threaded holes (no fault of the manufacturer, the threads were just gunked up). The bolts that secure them are M16 (install video says 14), may want to have a tap that size on standby incase those threads are gunked up. I wish I would have spent the extra money on the Reese outboard rails (didn't because of the extra money and the large profile of the rails).


Excellent product easy to follow instructions assembled easily. Reminder unit is very heavy for one person but it can be done.


Last summer I made purchase of the A16 sliding 5th wheel hitch along with rails.the install took about six hours working by myself .following the enclosed instructions is important and saves time if you do it exactly as shown.I was very pleased with the delivery,it was prompt and no charge.that was great.the hitch is a slider which I think is important on a shortbed,could save damage to truck during experience with etrailer has been really good and would recommend this company to anybody shopping for trailering equipment

2019 Chevrolet Silverado

I had originally ordered a 11604/11607 under bed gooseneck mount for my 2019 Silverado 2500HD, but found out during initial parts fitting that an under bed rib had been welded out of position on my truck, and the side rail brackets would not fit because of it. A phone call to Curt verified my finding and they suggested going to an in bed rail mount as an alternative. I called etrailer and spoke with Bailey B about my situation and she was very quick to understand what I needed to do. She helped me place an order for a 16411/16204 in bed rail mount kit. She then emailed me instructions and UPS shipping labels so I could return the parts I could not use. I received my new kit yesterday (one day early!!) and a quick look tells me I now have what I need. Bailey B was super helpful, and the exchange process was above and beyond my expectations. Count on me for future purchases. I had hand surgery a few days ago so it will be a while before I can install this hitch rail kit. If I can edit this review then, I'll add pictures. In the meantime, I'm going to have a spray in bed liner done and I'll be ready to go. Thanks again Bailey and etrailer!


Excellent product, perfect fit for my vehicle, arrived a couple days before it was supposed to. I did not want an "aftermarket" look, which is why I ordered a kit designed specifically for my vehicle. I did take the time to remove the heat shield to gain better access to the installation bolts. The biggest challenge was installing and tightening the bolts that go through the bed; there is not a lot of room between the trucks frame and the bed of the truck. The most challenging bolts were the ones on the driver side closest to the cab of the truck due to the placement of the gas tank. Trailer wiring was plug-and-play, hardest part was drilling the 2" hole in the side of my truck bed.


This is the second one of these that I ordered from e trailer. The first one I got at the same time as the fifth wheel hitch. I install on my 2015 Silverado 2500HD. I traded that Silverado for a 2018 Silverado 3500 Z71. Kept the hitch had to leave the rails. Great product and not bad to install. Took about 2 hours. If I trade again, I will get third.


Whew! Installing that Rail kit about kicked my butt! The reason why is all the trips I made from underneath the truck and back. The Rail kit is a very high Quality Product from Curt that fits perfectly in the bed of my truck. The hardware is also high quality. One downside is there isn't a lot of room to work as the gas tank on one side and the exhaust on the other side prevents easy access (gas tank in particular). It was very hard to get a wrench on the nuts unless you used a Gearwrench. After the install they are torqued to 110 ft-lb. The only way to do that was to put a 1 inch adapter on the torque wrench then put that in the open end of the gearwrench in the adapter. Then using a formula on line, convert that to what you have to ft-lb. Anyway It was worth it because I know I have a good product that will stand the test of time.

2016 Chevrolet Silverado 2500

The installation kit fit perfect but take the time to move the spare tire and the heat shield out of the way to make it easier.

Kevin L.


The products have worked flawlessly no problems and thank you for checking back with me its nice when a company cares about there costumers. Next time I need any trailer products I will definitely be contacting etrailer.


Box was delivered with a little damage and the contents of the hardware bag was loose in the box. After going through the parts list and realizing I was missing 1 block, we contacted etrailer and they shipped the replacement part immediately, we got it within 3 or 4 days. Install was a breeze after watching the video and fishing the bolts and blocks in the frame. Only took a couple hours total.


Very disappointed with the quality of parts I received from etrailer. I got parts for my 2015 GMC Sierra 2500 they look like they came out of the scratch and dent section. Like I understand that the item is heavy and it’s hard for it to stay prefect in shipping but for the amount paint missing and how beat up the parts are for [XXXX] dollars shocks me. I bought a new with wheel not a used one. This is a few photos of the many more I have hope this helps with your experience.


This is a great product, but the install time estimates are way off. I have been a mechanic in my own shop for 19 years and I didn’t remove the rear wheels or the spare tire (because) it wasn’t necessary on my truck. I have a lift in my shop and it still took me 6 hours to install it! Trying to hold the spacers while trying to get the nuts installed on the 8 outer through the bed bolts was ridiculous! Terrible place to get to, lots of bad words! I’m thinking that buying the custom kit versus the universal was a bad idea, I have installed both and it was no quicker with this kit and it was almost a hundred dollars higher. My install was on a 2013 2500hd.


Very good product but did not line up with any holes in my truck frame. I had to drill 4 holes in frame to mount it.


If you do this yourself, definitely remove the wheel well liners and remove 3 of the 4 bolts holding the heat shield with one loosened to move it out of the way. Top front four nuts are the hardest to get started from under the truck. Start to finish 3 hours. Saved myself $500 for install

2011 Chevrolet Silverado

This bracket and rail kit was the perfect fit for my 2011 Silverado. Made the install of my hitch a breeze and allowed me to be on the road with my new trailer in no time.


I would like to say a big Thank You to Paula and entire Etrailer team. Their customer service is grade A+ they did everything in there power to deliver the parts I needed last minute and everything showed up faster then expected. Quality service is hard to find and for that I will always shop Etrailer. Thanks again!!


This has been my second fifth wheel hitch, a 2003 silverado and now a 2017 silverado chevrolet, I installed both with no help,
e-trailers were very helpful with the information I needed for my purchase.

2018 GMC Sierra 2500

The boxes were delivered a little beat up with no missing hardware or pieces, but that's to be expected with heavy steel plates inside. Install was straight forward. I installed it in the morning to go rescue my in-law's camper in the afternoon.


Excellent Product, amazing customer service. The fifth wheel hitch mounting kit has held up just as I would have expected. I will do business with Etrailer again anytime!



product has worked out great, I would recommend!


Very happy with the quality of the rails, the hitches fit as they should. The only reason I did not give a five star as the kit was missing a couple of the bolts needed for the install. I had to call the technical hot line and they did send the bolts to me free of charge. The technical assistance was very good as well. They answer the phone promptly and were very courteous and helpful.



Still performing excellent! Very happy with the rail system. I have had the hitch out several times and when I go to put it back all the rails are still aligned and the hitch slides back into its locating holes. A very good product for a very fair price.


Great product.. better than my previous install on a 2006 Silverado w/separate brackets for each bolt for the Rails.
This went in like a dream.. however, with that said... watching the video from etrailer on YT showing how to install this was extremely helpful... the "real life" install is no where near as easy as they show.
The fuel tank and the bottom of the bed allow for about 5" of room to get you hand, arm and the bolts installed on the bottom of the bolts that come down from the rails. Very difficult. The passenger side also has the exhaust and a shield to contend with. Removal of the shield is a must, however the tight area between the frame rail and the underside of the bed... again, only allows for minimal accessability for the bolts.
The only bolts that were able to be torqued were the bolts on the outside of the frame rails, otherwise all other bolts were only able to be torqued to grunt specs.
Took about 3hrs, however it is way easier drilling only the 8 holes through the bed floor than into the frame...
I would suggest re-tapping the threaded studs that are on the frame. I installed this on a 3 yrs old 2017, and I had a tap to do this. W/O the tap I think the bolts would not have gone in so easy AND they most likely would have been damaged from the rust and stuff laying in the holes.

Jerome C.


Just a year now, and this hitch is still performing great. I really like the colored indicator in the front. I thought this would be a joke at first, but hey.. it really works. I find myself looking at the connection dot right before I put the truck in drive. If anything, its another way to double check Im hooked up correctly. Really like this 5th wheel hitch


Heavy steel construction. Went on without an issue. Everything fit like a glove. I would suggest the 10-bolt pattern as I did for extra strength and security.

Ron C.


Great, solid as they come.


Installation of this product was easy, instructions were easy to follow. Rail kit works as it’s designed. Great Kit.

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