Curt Double Lock, Flip and Store Underbed Gooseneck Hitch w/ Installation Kit - 30,000 lbs

Curt Double Lock, Flip and Store Underbed Gooseneck Hitch w/ Installation Kit - 30,000 lbs

Item # C607-604

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C607-604 - Manual Ball Removal Curt Gooseneck
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Get a little extra security when you are towing with Curt's double-lock, gooseneck hitch. Chrome-plated ball locks in place with two pins while towing and flips over for storage inside the hitch when its job is done. Installation kit included. Call 800-298-8924 to order Curt gooseneck part number C607-604 or order online at etrailer.com. Free expert support on all Curt products. Guaranteed Lowest Price and Fastest Shipping for Curt Double Lock, Flip and Store Underbed Gooseneck Hitch w/ Installation Kit - 30,000 lbs. Gooseneck reviews from real customers.
  • All Info
  • Reviews (257)
  • Q & A (29)
  • Videos (11)
  • Photos
  • Why etrailer?

Curt Gooseneck - C607-604

  • Curt
  • Below the Bed
  • Removable Ball - Stores in Hitch
  • Wheel Well Release
  • Manual Ball Removal
  • 30000 lbs GTW
  • 2-5/16 Hitch Ball
  • 7500 lbs TW

Get a little extra security when you are towing with Curt's double-lock, gooseneck hitch. Chrome-plated ball locks in place with two pins while towing and flips over for storage inside the hitch when its job is done. Installation kit included.


Features:

  • Heavy-duty underbed hitch lets you tow your gooseneck trailer
  • Double-lock system provides added security with 2 pins holding ball in place instead of 1
  • Chrome-plated hitch ball easily removes when you're not towing for complete access to your truck bed
    • Ball flips over and stores upside down in hitch for easy access
  • Chrome ring surrounds the hitch ball hole to provide a tight, low-profile look
  • Comfort-grip handle can be positioned on either side of truck bed
  • Safety-chain hookups are built in
  • Zinc plating provides superior corrosion resistance for locking mechanism
  • Rubber cover keeps grime out of ball hole when ball is stowed
  • Black powder coated steel is durable and corrosion resistant
  • Custom mounting kit with Grade 8 hardware included
    • 4" Hole in bed is required
    • No welding required
  • Adapter plate (C16210 - sold separately) allows for 5th-wheel towing
  • Offset hitch ball (C602 - sold separately) creates additional space between truck cab and trailer


Specs:

  • Ball size: 2-5/16"
  • Gross towing weight: 30,000 lbs
  • Vertical load: 7,500 lbs
  • 7-Year Limited warranty


Curt Double Lock Gooseneck Hitch Operation

Curt Double Lock Gooseneck Trailer Hitch Operation

The Curt Double Lock underbed gooseneck trailer hitch provides a sturdy, secure connection for towing your gooseneck trailer and also allows for a clean, unobtrusive look for your truck bed when you aren't towing. To tow, simply pull the included handle out to unlock the hitch. Then insert the chrome-plated hitch ball into the ball hole. You may need to rotate the ball to line it up with the dual locking pins. When the ball drops into place, rotate the handle counterclockwise until the locking pins snap into position. Because there are 2 locking pins instead of 1, you get extra security for your towing setup.


Get full bed access when you're not towing. Just remove the ball, flip it upside down, drop it back into the ball hole of the hitch, and use the handle to lock the ball in place. A rubber cover is included with the Double Lock. When the ball is stowed upside down in the hitch, place this cover over the ball hole to keep out dirt and grime and create a clean look for your vehicle.



60607 Curt Double Lock Underbed Gooseneck Trailer Hitch - 30,000 lbs

60604 Curt 600 Series Gooseneck Hitch Installation Kit

60710



C607-604 Installation InstructionsInstallation Details C607-604 Installation instructionsC607-604 Installation InstructionsAlternate Instructions C607-604 Installation instructions

This Product Fits The Following Vehicles

2011 - 2013 GMC Sierra 2500 - 6-1/2 Foot Bed

2011 - 2013 Chevrolet Silverado 2500 - 6-1/2 Foot Bed

2011 - 2013 GMC Sierra 2500 - 8 Foot Bed

2011 - 2013 Chevrolet Silverado 2500 - 8 Foot Bed

2011 - 2013 GMC Sierra 3500 - 6-1/2 Foot Bed

2011 - 2013 Chevrolet Silverado 3500 - 6-1/2 Foot Bed

2011 - 2013 GMC Sierra 3500 - 8 Foot Bed

2011 - 2013 Chevrolet Silverado 3500 - 8 Foot Bed

2014 - 2015 GMC Sierra 2500 6-1/2 Foot Bed

2014 - 2015 GMC Sierra 3500 6-1/2 Foot Bed

2014 - 2015 Chevrolet Silverado 2500 6-1/2 Foot Bed

2014 - 2015 Chevrolet Silverado 3500 6-1/2 Foot Bed

2016 - 2019 GMC Sierra 2500 6-1/2 Foot Bed without OEM Prep Pkg

2016 - 2019 GMC Sierra 3500 6-1/2 Foot Bed without OEM Prep Pkg

2016 - 2019 Chevrolet Silverado 2500 6-1/2 Foot Bed without OEM Prep Pkg

2016 - 2019 Chevrolet Silverado 3500 6-1/2 Foot Bed without OEM Prep Pkg

2014 - 2015 GMC Sierra 2500 8 Foot Bed

2014 - 2015 GMC Sierra 3500 8 Foot Bed

2014 - 2015 Chevrolet Silverado 2500 8 Foot Bed

2014 - 2015 Chevrolet Silverado 3500 8 Foot Bed

2016 - 2019 GMC Sierra 2500 8 Foot Bed without OEM Prep Pkg

2016 - 2019 GMC Sierra 3500 8 Foot Bed without OEM Prep Pkg

2016 - 2019 Chevrolet Silverado 2500 8 Foot Bed without OEM Prep Pkg

2016 - 2019 Chevrolet Silverado 3500 8 Foot Bed without OEM Prep Pkg




Video of Curt Double Lock, Flip and Store Underbed Gooseneck Hitch w/ Installation Kit - 30,000 lbs


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




Video Transcript for Curt Gooseneck - Below the Bed - C607-604 Review

Today, we're going to take a look at the Curt double lock flip and store underbed gooseneck hitch with the installations kit and has a 30,000 pound weigh capacity. This is a costume fit part. It is designed to fit the 2011 and newer Chevrolet Silverado and GMC Sierra 2500 and 3500 series trucks and it does work with the 6 1/2 foot bed or the 8 foot bed, either model. On a custom fit part, I always like to recommend to go to our website, use our fit guide, put in your year and model vehicle and it will show you if this will work for your application. For this video, I've installed the mounting kit, this part right here, to the center gooseneck hitch head just to give you an idea of what this whole kit looks like all put together. This is what it would look like underneath the bed of your truck. This is a heavy duty underbed hitch which will let you tow your gooseneck trailer.

Does use a double lock system which will provide added security. Basically, there's 2 pins under this rod that when you lock it, the 2 pins will go into the ball and hold it into place instead of your normal 1. Also, on that locking mechanism on the end of that handle right here, it is zinc plated so it does provide superior corrosion resistance. If you notice the gooseneck ball right here, it is a chrome plated hitch ball. It easily removes when you're not towing for complete access to your truck bed. Basically, the ball will just flip over and store upside down in the hitch for easy access.

To show you that, here's your locking and unlocking handle. You just take your handle, pull it all the way open, twist it and that will hold it in the open position. Then you can slide the ball out just like that. Wanted to show you, there's the 2 holes where the dual pins go in to lock it into place. To store it, flip it over just like that.

Drop it back into the hole so it goes all the way down. Release your hand and the dual pins go in and lock it in the stored position. The other nice thing is it does include this rubber cover. That's designed . You go over there once you're storing the ball. Once you put it on there it will keep any dirt or grime from getting down in that ball hole when it is being stored.

Again, it gives you full access to your truck bed. If you notice, there is a chrome ring here that will surround the hitch ball hole. This is to provide a nice tight, low profile look. There are safety chain hookups right here. They are spring loaded, you can see. When you go to hook up your gooseneck and unhook your safety chains right in there and it will hold them into place. This is a nice black powder coated steel. It's very durable and corrosion resistant. The mounting kit portion does include the brackets and all the grade A hardware for installation. Also, gives you a nice set of detailed instructions on how to install it. When you do install this, it will require a 4 inch diameter hole to be drilled in your bed so you have access to that opening and then 4 half inch holes for these safety U-bolts to go through. There is no welding required. There are 2 unique accessories that Curt makes that can go with this. I do want to mention them. We do sell both of those separately on our website. Curt does an X5 5th wheel adapter base rail plate. It's a part number C16210. Again, we sell it separately. Basically, it's an adapter plate that will mount in this gooseneck trailer hitch to supply the above bed base rails for installing a 5th wheel hitch if you wanted to do that. Basically, it's a plate with a post in the middle. The post will drop down in here, you lock it into place and then it gives you the above bed rails that you can hook your 5th wheel hitch up to. The other accessory, which is pretty unique, is they have a 4 inch offset hitch ball. It's part number C602. Again, we sell it separately. What that is, is instead of this hitch ball where you drop it in straight up and down, this one will have a 4 inch offset. When you install it, you can make it give 4 inch more clearance towards the tailgate of your vehicle. That will create additional space between the truck cab and the trailer. Few specs on this. Let me pull the ball back out. If you're getting ready to tow, open that up. Take your ball, pull it out again. Turn it over. Drop it back into place. Release your handle and you're locked, ready to go. The balls size is your standard gooseneck diameter ball size 2 5/16. Gross towing weight capacity, again, on this is 30,000 pounds. The vertical low limit is 7,500 pounds. That should do it for the review of the Curt double lock flip and store underbed gooseneck hitch with the instillation kit and a 30,000 pound weight capacity.


Customer Reviews

Curt Double Lock, Flip and Store Underbed Gooseneck Hitch w/ Installation Kit - 30,000 lbs - C607-604

Average Customer Rating:  4.7 out of 5 stars   (257 Customer Reviews)

Get a little extra security when you are towing with Curt's double-lock, gooseneck hitch. Chrome-plated ball locks in place with two pins while towing and flips over for storage inside the hitch when its job is done. Installation kit included.

- C607-604
by:
2016 Chevrolet Silverado 2500

Instructions were lacking. Product was nice and well made just kind of a pain to install. Ended up taking the bed off to make it easier. 597308



- C607-604
by:

Excellent design and fit my 2011 2500HD very well. I previously used B&W in another truck, but decided to give Curt a chance. Glad I did...very well made and I like the double lock on the ball. Would definitely buy again 577044



- C607-604
by:
2017 GMC Sierra 2500

Great product with easy fit on my 2017 GMC 2500HD long box. Installed from garage floor and took about 4.5 hours. Had a little problem with the template as instructions have it reversed when viewed from underneath truck. Video was great help all the way through! 644496



- C607-604
by:
Ford Transit Connect

Great product, easy install. E-trailer shipped it fast but when I received my hitch UPS destroyed the box in transit and I was missing a lot of stuff. One quick call to customer service and Bryan W had the missing parts shipped out that day! I highly recommend etrailer and will be a future customer 453874



- C607-604
by:

Great product easy to install and good price!!!!! 221771



- C607-604
by:
2017 Chevrolet Silverado

Install was straight forward on 2017 silverado 3500hd. I chose this kit because I don't have to trim any part of the bed to slide the cross rails in. Watching the video helps prepare you a head of time of what you need and to expect. Shipment was quick and undamaged. 644086



- C607-604
by:
2015 Chevrolet Silverado 3500

I got a Curt gooseneck C607-604 and installed it on our '15 Chevy 3500 pick-up. No problems with the installation. It was shipped and arrived quickly. Altogether a very good experience dealing with Etrailer. Great price! Thank you and looking forward to dealing with you again. 230430



- C607-604
by:
2016 Chevrolet Silverado-2500

Very satisfied with hitch . Installation was Easy , except drill template was made improperly and extra measurements were required prior to drilling 4" ball hole. Also would suggest that Curt should clean paint out of all threaded holes prior to shipping. 269832


Comments

Great, have bought and installed one in my 2017, design improvements for drill template and frame flange mounting are great

Norvin M - 07/09/2017

25839

- C607-604
by:
2015 Chevrolet Silverado 2500

This company helped me from step 1 on deciding which gooseneck hitch to go with, installation videos and checking up on after receipt of the hitch. The hitch was super easy to install with the template for drilling the hole that was included, this hitch by far exceeds the little extra touches you get with a more expensive hitch, the pull handle is a heavier gage, the double locking pin, and even the dust cover to keep out the dirt and gravel from the turnover ball! Great product 378880



- C607-604
by:

It’s been one year since I installed this gooseneck hitch on my truck. The video was straightforward and I was able to install an afternoon. Since then I have towed my horse trailer several thousand miles in all sorts of climates and conditions with absolutely no issues. Only suggestion , Is make sure every six months or so you lube the height of all lever and mechanism to prevent sticking. I installed this hitch for a fraction of what all the local trailer and towing stores quoted me. 546020



- C607-604
by:
Chevrolet Silverado 2500

I ordered my hitch on Tuesday afternoon and received it Friday morning. Saturday morning I put it took about 3 1/2 hours to install which included 45 minutes to get the lock off the spare tire. Struggled to get the bolts in the frame but other than that everything went smooth. It looks real nice in the bed of my 2500 chev. Now to finish lunch and hook onto the trailer and go. 478582



- C607-604
by:
2013 GMC Sierra

Wonderful customer service parts arrived as promised. The box was damaged doing ship but everything was still there. Very easy installation. The front rail and goose neck plate have a indention to clear fuel tank. The indention still rubs the fuel tank, I had to pry up on the rails before tightening the side mounts. Other then that everything else was pretty smooth. 487673



- C607-604
by:
2016 Chevrolet Silverado 2500

Easy to install just follow the video on website. I did it by myself. Took about 2 hours. Thanks. 360894


Comments

After one year the hitch is still working great. I tow my tractor all the time with no issues.

Roy D - 03/31/2018

36619

- C607-604
by:
2011 Chevrolet Silverado

The video was extremely helpful. All holes lined up and installation went smoothly. 519773



- C607-604
by:
2016 GMC Sierra 2500

I think this gooseneck hitch is the best for newer Sierra/Silverado HD trucks. I installed it a week ago with the help of my father-in-law and his car lift. Took about 4 hours moving slowly and taking our time. Everything fit well and bolted right up. I also reinstalled the foil heat shield after removing one mounting ear. I did not drop the exhaust or the plastic heat shield and still got everything in. I chose this specific kit because it did not require notching the bed seam when installing the rails. It also has a higher tongue load rating than the others and was cheaper. The only major criticism I have is the pull wire and carriage bolts. My chassis has weld nuts and I would have preferred to use those over carriage bolts pulled into the chassis. I am thankful there were access holes almost inline with the mounting holes. That made it easy to put pressure on the bolt heads so they didn’t fall back. I also think the gasket around the big hole should be one piece to make it look cleaner. I used black silicone rtv to smooth the transition and adhere the gasket in place. Overall I am completely satisfied with the kit and the help of Shawn B who got my order in, had it shipped that same day and followed up with me after delivery. Thanks etrailer and Shawn B. 468718



- C607-604
by:

Installed this hitch with no trouble, by myself, in three hours. Every hole lined up perfect. Customer is a rancher who uses it on dirt roads almost daily. I check the bolt torque every oil change. Never had a bolt move. 727437



- C607-604
by:

I have used Curt gooseneck hitches in the past and could not ask for a better product which is the reason I just ordered the same hitch and also use etrailer for the excellent service that the company always has. I will use them again when needed,Marshall 721983



- C607-604
by:
2016 GMC Sierra 2500

It would have been helpful if you included a 1/2” tap for the 12 holes that needed chased in your kit. The rest of hutch was good. Thanks 699164



- C607-604
by:

Perfect fit, really snug and tight. Good to have a jack laying around to lift the gooseneck into the right spot to fit bolts into their spots. Towed a 15k trailer to Texas with no complaints. Great gooseneck so far 697332



- C607-604
by:

WORKS GREAT 678895



- C607-604
by:

Great product, I’ve bought two of this and installed both. Only one problem. Neither One of them had the center pattern for drilling the four inch hole. Over all very reasonable price and easy install. 677500



- C607-604
by:
2017 Chevrolet Silverado

Install was straight forward on 2017 silverado 3500hd. I chose this kit because I don't have to trim any part of the bed to slide the cross rails in. Watching the video helps prepare you a head of time of what you need and to expect. Shipment was quick and undamaged. 644085



- C607-604
by:

GREAT ITEM, WELL WORTH THE COST. 634493



- C607-604
by:

My hitch arrived in two days. I installed it the next day. My friends that have seen it are impressed with the quality and how easy it was to install. I would recommend your products to others. Your service was excellent. Thank you 619962



- C607-604
by:
2016 GMC Sierra 2500

Great price, easy install and good qual ity 617514



- C607-604
by:

works great . Had my nephew install it . Will definitely recommend it. 602872



- C607-604
by:
2018 Chevrolet Silverado 2500

Very good hitch easy to install this is the second one I bought. I have put this hitch in 2 different trucks. I pull alot of hay hasn't let me down yet.. 594651



- C607-604
by:
2016 Chevrolet Silverado

I bought a new horse trailer that was a gooseneck and needed a hitch for my 2016 Silverado and found this one. My dad and husband installed it in about 3 hours (would not have taken that long if they hadn’t lost a bolt). They watched the installation video once and everything else was pretty self explanatory. (Take it they have never installed a gooseneck before). The next day I tested it to see how it pulled and it worked amazing! Will definitely be buying another to put in our other truck. 591896



- C607-604
by:
2011 Chevrolet Silverado

fast and easy install. 585226



- C607-604
by:
2016 GMC Sierra 2500

I was very happy with the product and even more with etrailer.com. thanks for your support. 512780



- C607-604
by:
2017 GMC Sierra 3500

Very happy with product. A little wresting to get installed but works as advertised. 492886



- C607-604
by:

Product want on just like in the video. Not one problem. Would recommend this. 455097



- C607-604
by:

The Curt goose neck hitch is a great product built very well. etrailer was a pleasure to work with delivering the product to my doorstep on time and complete. I would definitely use them again in the future. 449570



- C607-604
by:
2011 Chevrolet Silverado

Haven't installed, but product was shipped extremely fast. Components are very well built and nothing was missing. The installation video said to tap the installation holes with a 1/2-13 tap prior to install to remove overspray from coating. This is very good advice as 1/2 inch bolts will thread in but give resistance the whole way in if coating isn't removed with the tap. Mine was shipped in two boxes making it easier to handle than having all the weight in one box. Overall I believe this is a very good product at a very good price. I also ordered a 7 blade Hopkins wiring kit #47210. This was also well built. The only purchase I had to make was the self tap mounting screws as mounting hardware is not included. 430437



- C607-604
by:
2014 GMC Sierra 2500

Products delivery was as told! Very prompt and information well provided! 417551



- C607-604
by:
2015 Chevrolet Silverado 2500

Very good quality fast shipping. .easy installation 391438



- C607-604
by:

Good fit and I installed without lifting my bed. Make sure you have a tap. The holes are full of powdercoat. 374474



- C607-604
by:
2016 Chevrolet Silverado 3500

Fast service, everything is there and as described, I would buy here again. Thank You Andy 368668



- C607-604
by:
2017 GMC Sierra 2500

Fast shipping and easy installation. Hardest part was setting the center section in but it was done by myself. Install time of 4 hrs. 349281



- C607-604
by:
2016 GMC Sierra 3500

Good product. East to install. Follow the directions implicitly. Done right, a simple setup. Be careful of the lines and wiring when lifting the center section into place. All in all, good buy for a good price. 326461



- C607-604
by:
2011 Chevrolet Silverado

Purchased the C607-604 goose neck hitch for my 2011 2500HD. Installed the hitch myself, pretty simple, Anthony was very helpful with emailing me installation information. Will be using the hitch to pull stock trailer. I shopped around and felt etrailer offered the best deal and am happy with the purchase. Thanks. 284549



- C607-604
by:
2011 Chevrolet Silverado 2500

I purchased this gooseneck hitch and installed it in a 2011 Chev 2500 HD just go by the directions and it bolts wright up and it's very well made 276605



- C607-604
by:

Pretty easy to install they have great instructions 248400



- C607-604
by:
2015 Chevrolet Silverado 2500

Great hitch, very easy to install even though I had never done one like this before. Shipped very quickly and was here before I was ready to put it in. 227934



- C60720
by:

Review from a similar Curt Double Lock in Gooseneck


Install was a breeze , works excellent. Pulling a 4 horse trailer with no issues, I'll definitely be buying all my future trailer needs from you. 570705



- C60607
by:

Review from a similar Curt Double Lock in Gooseneck


Great product. Fit my vehicle without modifications. Easy to install. Converted my fifth wheel travel trailer to goose neck hitch, so I don't have to remove a heavy fifth wheel hitch every time I want to haul something. Just pull the lever and turn the ball over giving me full use of the truck bed. Awesome 704141



- C60712
by:

Review from a similar Curt Double Lock in Gooseneck


Great value, arrived in just a few days. Looking forward to installation when time permits. Install helps look good. 442950


Comments

All good..no change.

Bob R - 10/16/2018

44713

- C60712
by:

Review from a similar Curt Double Lock in Gooseneck


Product came with some packaging damage, and a few things were missing. I called customer service and they were very quick to resolve the problem and send me out new hardware and the missing parts. Overall a great experience and will buy from them again in the future. 494630



- C607-661
by:

Review from a similar Curt Double Lock in Gooseneck


Curt and Pollak make a great product and etrailer is a great site, I come here for all my towing needs now! My only issue is that the instructions for the gooseneck hitch were kind of vague. I got it on in about 3 1/2 hours taking my time and making sure it was right. Other than that I would purchase a Curt and Pollak product again! 454991



- C615-632
by:

Review from a similar Curt Double Lock in Gooseneck


Could be packaged better. The parts are heavy and rub on each other and in some cases the finish was scraped off. Had to chase the holes with a 1/2" tap, because the finish on the hitch was sprayed into the holes. Directions were ok. Hitch fits fine and works well on my 1/2 ton Chevy. The person I worked with at etrailer.com was helpful and the hitch was shipped promptly. 555980


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Ask the Experts about this Curt Gooseneck

Do you have a question about this Gooseneck?


  • How to Tell Difference Between Curt EZr and Double Lock Gooseneck Hitch
  • Easiest way to tell which gooseneck hitch you have is by looking at the safety cable loops. If they are about as wide as the gooseneck ball hole and are centered with the ball hole it's an EZr, if the safety chain loops are a smaller and offset then it's a double lock. Take a look at the pictures of the EZR part # C611-624 and the # C607-604 and compare your safety chain setup to both of these. Let me know which yours matches and we can go from there. The part # C16210 is for the...
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  • I need a solution for 2017 chevy 2500 towing
  • While we do have other options for you, the only way to use the B&W Companion # BWRVK3500 or # BWRVK3400 is by having the entire B&W Gooseneck Hitch # BWGNRK1016 installed on your 2017 Chevy Silverado 2500 as there isn't a way to safely fit different parts of gooseneck hitches together. With that being said, I'm a little curious about the gooseneck hitch you currently have installed. Reason being that the Chevy factory gooseneck hitch would have needed all of the pucks installed as well...
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  • Gooseneck Hitch Installation of 2019 Chevrolet Silverado 2500HD
  • There are underbed gooseneck hitches that fit a 2018 and 2019 Chevy Silverado 2500 but the Curt # C61652 is not one of them. Instead I recommend checking out the Curt Double Lock, Flip and Store Underbed Gooseneck Hitch w/ Installation Kit # C607-604 which fits both the '18 and '19 Silverado 2500 and has a gooseneck ball which can be stored upside down in the hitch for complete access to your truck bed.
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  • Best Gooseneck Trailer Hitch for 2019 Chevy Silverado 3500
  • The best gooseneck trailer hitch for your 2019 Chevy Silverado 3500 is by far the B&W Turnoverball Underbed Gooseneck Trailer Hitch # BWGNRK1016 because it has a square base for its hitch ball which ensures optimal strength and durability. What makes the B&W the best option, and separates it from the likes of the Curt Double Lock # C607-604 which also fits your '19 Silverado 3500, is that the hitch ball of the B&W gooseneck hitch has a square shank that fits directly in the base, and...
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  • Recommended Curt Gooseneck and 5th Wheel Hitch for 2017 GMC 2500 HD Denali
  • For your 2017 GMC 2500 Denali, I recommend the Curt EZr Double Lock Underbed Gooseneck Trailer Hitch with Installation Kit - 30,000 lbs # C611-624 is a confirmed fit as is the Curt Double Lock, Flip and Store Underbed Gooseneck Hitch w/ Installation Kit - 30,000 lbs # C607-604. The only major difference between these two is the tongue weight rating of the Double Lock is 7500 lbs compared to the 6,000 lbs of The EZr Double Lock. The other difference is in the safety chain loop locations...
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  • Recommended Curt Gooseneck Hitch for 2018 Chevy Silverado 1500 with 5-1/2 Foot Bed
  • I do have a solution for you, however the Curt Double Lock Underbed Gooseneck Hitch # C607-604 referenced in your question is only designed to fit the 2018 Silverado 2500 or 3500 that features a longer bed. It will not work on your Silverado 1500 that has the 5-1/2 foot bed. For the Curt Double Lock Gooseneck Hitch that is designed to fit your truck you instead need the part # C615-632. This is confirmed to fit and includes custom brackets that use existing holes in the truck's frame...
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  • How To Use the Curt Q20 With an Under Bed Mount on a 2011 Chevrolet Silverado
  • Yes, I do have a way for you to utilize the Curt Q20 5th Wheel Trailer Hitch part # C16130 with an under bed mounting kit on your 2011 Chevrolet Silverado. For this, you will need to use the Curt Double Lock, Flip and Store Underbed Gooseneck Hitch part # C607-604 for 2500/3500 models or part # C615-632 for 1500 models along with the Curt X5 5th Wheel Base Rails Adapter for Curt Double Lock Gooseneck Trailer Hitches part # C16210. This will be the only option you have to utilize an under...
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  • Where Is Gooseneck Hitch Installed On 2013 GMC Sierra 2500 Long Bed
  • When installing the Draw-Tite Hide-A-Goose hitch # 9465-56, the hitch ball hole location is 45-3/8 inches from the rear of the truck bed and is centered between the wheel wells. For the B&W Turnoverball Underbed Gooseneck # BWGNRK1012, the hitch ball hole is 49-1/2 inches from the back of the truck bed. If you are installing the Curt Gooseneck # C607-604, the distance is 49-inches from the cab of the truck to the center of the hitch ball hole. All three of the mentioned gooseneck...
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  • Does Curt Double Lock Underbed Gooseneck Hitch Fit 2018 Chevy Silverado 2500?
  • Yes it will! The Curt Double Lock, Flip and Store Underbed Gooseneck Hitch # C607-604 will fit in your 2018 Chevy Silverado 2500. To install this kit in another truck you will need Curt 600 Series Gooseneck Installation Kit for Chevy/GMC # C60604.
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  • Can Curt Double Lock Flip and Store Underbed Gooseneck Hitch be Used with Andersen Ultimate
  • The Curt Double Lock Flip and Store Underbed Gooseneck Hitch # C607-604 referenced in your question is confirmed to fit your 2018 GMC Sierra 2500 and will provide a 30,000 pound towing capacity. The included installation kit will use existing holes in the truck's frame so you won't have to drill to install the frame brackets. Then, if you are referring to the Andersen Ultimate 5th Wheel Connection that mounts to a gooseneck hitch on the truck, it will indeed be compatible with the above...
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  • How to Tell the Difference Between the Curt Double Lock & EZr Gooseneck Hitch
  • If you could send me a picture of the gooseneck hitch you have installed in your 2017 GMC Sierra 2500 then I would be able to make a more educated guess but based on your description you have the Curt Double Lock Gooseneck Hitch part # C607-604 and the correct adapter would indeed be part # C16210. However, if the gooseneck hitch was installed at the dealer then you would have had the Curt EZr Gooseneck Hitch part # C611-624 and the correct adapter would be part # C16220. I have attached...
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  • Dimensions for Drilling Gooseneck Ball Hole to Install Curt Hitch # C607-604
  • The gooseneck hitch you have is the Curt 600 Series part # C60604 which is just the rail kit of the # C607-604 that you referenced. I attached a link to the install instructions and an install video for the hitch for you to check out as well. If your truck was a short bed the center of the gooseneck hole would need to be 44 inches from the rear truck bed rail. If instead you had a long bed the dimension would be 48-7/8 inches instead.
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  • Is Template for Locating Where To Drill Hole Included With Curt # C607-604 Gooseneck Hitch
  • The template for correctly locating where to drill the 4 inch diameter hole through the truck bed is indeed included with the kit, as shown in the parts list from the installation instructions. You can look over the instructions by using the provided link.
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  • Does Curt Gooseneck Install in 2018 Chevy Silverado 2500 Require Frame Drilling
  • The install of the Curt gooseneck hitch part # C607-604 in your 2018 Chevy Silverado 2500 does not require any frame drilling to install. The only drilling required is through the truck bed for the safety chain loops and the gooseneck ball hole. I attached an install video for this for more info as well.
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  • Do Curt Gooseneck Hitches # C607-604 and # C611-624 Both Fit 2013 Chevy Silverado 2500HD
  • Realistically there isn't a noticeable difference between the two Curt gooseneck hitches that both fit your 2013 Chevy Silverado 2500HD. Both the # C607-604 and # C611-624 are a great fit that will for all intents and purposes work just as well as the other. For the most part the EZr is a smaller version that very similar but slightly different ball.
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  • Will The Firestone Airbags Work with the Curt Gooseneck Hitch on a 2016 Chevy Silverado 2500
  • Yes, the Firestone Ride-Rite Air Helper Springs part # F2596 will work with the Curt Gooseneck Hitch part # C61301-52 for overbed and part # C607-604 for under bed and are a confirmed fit for your 2016 Chevy Silverado 2500. The gooseneck hitch mounts on the outside frame rails and the Firestone airbag kits mount underneath the frame rail hence the compatibility. In order to operate the airbags from inside the vehicle, I recommend using the Firestone Air Command I part # F2158. The Air...
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  • Compare Curt Hitch EZR and Double Lock for 2016 Chevy Silverado 2500
  • From a function point of view there isn't a huge difference between the two Curt gooseneck hitches that are listed as a fit for your 2016 Chevy Silverado 2500. That you would notice is the EZR has a smaller plate that has larger u-bolts for safety chains and the Double Lock has smaller safety chain loops that aren't centered.
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  • Comparing Curt Double Lock and EZr Double Lock Gooseneck Hitches for a 2019 Chevy Silverado 2500
  • The Curt Double Lock # C607-604 and EZr Double Lock # C611-624 for your 2019 Chevy Silverado 2500 are essentially the same gooseneck hitch. The only differences are that the Double Lock has a pin weight rating of 7,500 lbs while the EZr has a pin weight rating of 6,000 lbs and the EZr comes with a center locator to make drilling the gooseneck hole in your bed much easier. Both are rated for towing up to 30,000 lbs, have spring-loaded safety chain loops, the ability to store the hitch...
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  • Gooseneck to 5th Wheel Adapter Needed for a 2016 GMC Sierra Denali 3500 with Curt Gooseneck Hitch
  • From the pictures that you sent in it looks like you either have the Curt Double Lock # C607-604 or the Curt EZr Double Lock # C611-624 installed on your 2016 GMC Sierra Denali 3500. If you have the Double Lock # C607-604 then you can use the X5 Adapter # C16210, but if you have the EZr Double Lock # C611-624 you will want to use the X5 Adapter # C16220 instead. Either one of these options will provide you with a standard base plate kit for you to use a 5th wheel hitch with standard...
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  • Installation Kit for a Curt Gooseneck Trailer Hitch for a 2011 Chevy Silverado 2500 Long Bed
  • The correct installation kit for a 2011 Chevy Silverado 2500 is # C60604. It will fit with the Curt Double Lock, Flip and Store gooseneck hitch; Curt Quick Goose 2 gooseneck hitch; or Curt Underbed, Folding gooseneck hitch. You might also be interested in the installation tool, # C60606, to make installation even easier. I have linked instructions for the tool and the installation kit.
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  • Gooseneck Hitch Fit for 2015 Chevrolet Silverado 3500 Dually Long-Bed Pickup
  • Curt Double Lock Flip and Store Underbed Gooseneck Hitch # C607-604 is a confirmed fit for your 2015 Chevrolet Silverado 3500 dually long bed. The linked video shows installation in a 2013 Sierra. This hitch is compatible with Curt's accessories like their X5 5th Wheel Adapter # C16210 and their 4-Inch Offset Ball # C602. If you also need a wiring harness for the truck you can use part # C56000.
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  • Recommendation for a Fold Down Gooseneck Trailer Hitch for a 2011 GMC Sierra 2500HD Short Bed Diesel
  • For your 2011 GMC Sierra 2500HD short bed, you can use the Curt Double Lock Gooseneck Hitch and Rail Installation Kit, # C607-604. My contact at Curt said that with a 6 foot bed and diesel the installation kit should still fit. Since you do have a short bed and crew cab, you may also need an offset ball. You can use # C602 which is compatible with the Double Lock hitch and has a 4 inch offset.
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  • Sidewinder Pin Box for Towing 5th Wheel with Short Bed Pickup
  • 5th wheel hitch adapters like the Anderson Ultimate # AM3200 are certainly a lot lighter than standard 5th wheel hitches but do not give you the same turning clearance as a slider hitch like the 16K Pro Series # PS30094, the lightest one we offer at 120-lbs. If you can swap out the pin box on your trailer to a Sidewinder/Revolution pivoting type, which extends the actual pivot point between the truck and trailer, you can use the super light Demco Recon # DM8550043 which easily breaks...
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Info for this part was:

Expert Research:
Michael L
Expert Research:
Michael H
Expert Research:
Jameson C
Expert Research:
Adam R
Video Edited:
Zack K
Video Edited:
Joshua S
Video Edited:
Jacob T
Video Edited:
Chris R
Video by:
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Video by:
Michael B
Updated by:
Lindsey S
Updated by:
Laura H
Updated by:
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Updated by:
Isabelle B
Installed by:
Jeff D
Test Fit:
Andrew S
Test Fit:
Brent H
Test Fit:
Shane H

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