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  1. Gooseneck and Fifth Wheel Adapters
  2. etrailer
  3. Gooseneck Trailer to Fifth Wheel Hitch
  4. Replaces Inner Tube
  5. Gooseneck Coupler Adapters
  6. 30000 lbs GTW
Ram Gooseneck to 5th Wheel Trailer Coupler Adapter - Round - 30K

Ram Gooseneck to 5th Wheel Trailer Coupler Adapter - Round - 30K

Item # KPG5-R30IP
Our Price: $176.02
Gooseneck and Fifth Wheel Adapters
Shipping Weight: 45 lbs
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King pin coupler allows you to pull your gooseneck trailer with a fifth-wheel hitch. The height easily adjusts to fit your application. Round inner tube is included. 1-800-940-8924 to order etrailer gooseneck and fifth wheel adapters part number KPG5-R30IP or order online at etrailer.com. Free expert support on all etrailer products. Great prices and Fastest Shipping for Ram Gooseneck to 5th Wheel Trailer Coupler Adapter - Round - 30K. Gooseneck and Fifth Wheel Adapters reviews from real customers.
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  • Reviews (573)
  • Q & A (0)
  • Photos

etrailer Gooseneck and Fifth Wheel Adapters - KPG5-R30IP

  • Gooseneck Trailer to Fifth Wheel Hitch
  • Replaces Inner Tube
  • etrailer
  • Gooseneck Coupler Adapters
  • 30000 lbs GTW
  • No Offset
  • Adapts Trailer
  • Adjustable Height

King pin coupler allows you to pull your gooseneck trailer with a fifth-wheel hitch. The height easily adjusts to fit your application. Round inner tube is included.


Features:

  • Gooseneck-to-5th-wheel adapter lets you tow your gooseneck trailer with a 5th-wheel hitch
    • Round inner tube fits most standard, round gooseneck outer tubes
  • Adjustable height to fit your application
  • Sturdy steel construction
  • SAE J2738 compliant


Specs:

  • Tube diameter: 4"
  • Range of vertical adjustment: 8"
    • 2-11/16" From center of hole to center of hole
  • Pin hole diameter: 7/8"
  • Plate dimensions: 9-7/8" long x 10" wide
  • Weight capacity: 30,000 lbs
  • 1-Year warranty


Diagram showing plate dimensions for gooseneck


KP5G-R30IP Ram Gooseneck to 5th Wheel Trailer Coupler Adapter Inner Tube - Round - 30,000 lbs





Customer Satisfaction Score:


Customer Reviews

Ram Gooseneck to 5th Wheel Trailer Coupler Adapter - Round - 30K - KPG5-R30IP

Average Customer Rating:  4.7 out of 5 stars   (572 Customer Reviews)

King pin coupler allows you to pull your gooseneck trailer with a fifth-wheel hitch. The height easily adjusts to fit your application. Round inner tube is included.

by:

For a semi it needs to be wider, doesn't ride on the friction plate.



by:

Great product. Allowed me to use a friends gooseneck trailer with my fifth wheel hitch and haul 4 tons of wood pellets! Very easy to put on and take off.



by:

It looks very nice. Paint or at least primer would be nice on the exposed lower 4 inches. (to the top of the gussets) but I can rattle can it. Nice fabrication.

Lking

2/1/2024

Still working great. I use the nylon shim so no grease required either except in the jaws. Excellent.



by:

Perfect fit. Easy install. It comes raw. Buy a can of paint to match your trailer.



by:

I like this a whole lot better than the gooseneck. hooking up is faster and easier. no trying to guess if youre over the ball or not, just back into it until the jaws latch.., I will be putting this on all my goosenecks. love it! Not to mention it took the chucking out..



by:

Not much to the big chunk of metal but it is definitely heavier then my gooseneck coupler. It definitely feels like it can take 30k lbs! A little downside I have to really clean it up and the rust to paint it, it comes bare. Otherwise I'm happy with it!!



by:

worked great converting gooseneck to 5th wheel on my 2024 Big Tex 14GN



by:

good product, good price, welds are not up to standards, well at least my standards. i added another pass on all welds for added strength and peace of mind.



by:

I have 3 of them. They are a good product and they are built very well. I recommend them to anyone who wants to convert to a 5th wheel! etrailer is a Great Company to deal with! Take Care!’



by:

I am extremely happy with this fifth wheel adapter, works great, was delivered in a timely manner



by:

This part was not finished in any kind of paint coating and looks like sh$t!

Etrailer Expert

Jenny N.

3/2/2023

Whoah! That is a strong statement. These couplers have a raw steel finish. This means that the coupler can be painted to match your trailer.



by:

It arrived on time,looks well built,should save time not having to remove 5th wheel hitch to pull gooseneck trailer. Will pull with it soon and see if any changes with pulling with it.



by:

Great product. My only small disappointment is that it dont come powder coated.



by:

Amazing build and great design. This think is thick!

Very excited to see how much better the 34 foot cargo trailer will be with this conversion.



by:

I ordered this item and within 2 days it had arrived. Installing it didn’t take over 10 minutes! I use my truck to work during the week and pull my 5th wheel on the weekend! Only thing I’d recommend purchasing is a lube plate to put on the hitch, that way you don’t have to deal with a greasy mess! I’d recommend this hitch to anyone!

Jacob

3/30/2021

The product is holding up well and works great. It is very convenient being able to switch from my camper to my gooseneck without having the change the hitch out!



by:

The picture shows the plate is not perpendicular to the holes, I thought this could have been the perspective, nope the plate of the unit I received is not perpendicular. Not a big deal, the bigger problem was I couldn't use it. I have a 2000 F250 and a BigTex 14' dump trailer, the combination of the truck, trailer and 5th wheel hitch didn't work, the angle put too much weight on the rear tires. I couldn't get the hitch low enough. I had painted the adapter so returning it wasn't an option. Other than the orientation of the plate the adapter is well made. I won't hesitate to use it in the future if my vehicles change to where it will work.



by:

Well built for the price. Had to get one to take my class A cdl test, but now I can haul my 40' gooseneck trailer with any truck.



by:

Worked well but had to go with different approach ended up buying a bed rail gooseneck ball hitch



by:

Part looks to have clean welds with no undercuts. Will have to get it installed and use prior to giving a report on how well it holds up.



by:

Nice heavy duty goose neck 5th wheel adapter fit good .
Allowed me to take on other hAuling jobs

Robert

8/17/2022

I dont get a chance to use it much but has preformed very well Id buy again



by:

Came on time, fit fine, works great!



by:

Paid for 3 day shipping and 6 days later and they make look powder coated but it cam bare already rusted

Jenny N.

7/7/2023

We do want you to receive your orders on time. I will have our Customer Service team reach out to you. These coupler adapters are steel versus being powder coated and are subject to rusting. I recommend touching it up with a rust resistant paint like Rustoleum.



by:

Amazing service and quality products!! I will never go anywhere else.



by:

Works great dont need to lift trailer much to unhook



by:

Just what I needed to convert my flat bed trailer to my 5th wheel hitch


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See what our Experts say about this etrailer Gooseneck and Fifth Wheel Adapters

  • Gooseneck to 5th Wheel Adapter for Big Tex 14GN
    Since you have a 4" round tube you need the Ram Gooseneck to 5th Wheel Trailer Coupler Adapter # KPG5-R30IP. This will replace the inner tube on your Big Tex 14GN. The # KPG5-R30 you were looking at comes with the same inner tube along with the outer tube.
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  • Replacement Inner Tube for 30K Gooseneck to 5th Wheel Trailer Coupler Adapter
    If the outer tube you have on your trailer now measures to be 4-1/2" diameter then you will not need a new outer tube and you can use the Ram Gooseneck to 5th Wheel Trailer Coupler Adapter part # KPG5-R30IP. However, if the outer tube on your trailer is not 4-1/2" diameter then you will need both, the Ram Gooseneck to 5th Wheel Trailer Coupler Adapter part # KPG5-R30.
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  • Does Ram Gooseneck to 5th Wheel Adapter KPG5-R30 Require Professional Welding
    Yes, when it comes to round gooseneck couplers, the industry standard is a 4 inch OD inner tube and 4.5 inch OD outer tube. The Ram Gooseneck to 5th Wheel Trailer Coupler Adapter # KPG5-R30 you referenced includes both the inner and the outer tubes, ideal for people needing to replace a damaged coupler or for someone looking to fabricate a trailer without an existing coupler. It sound like all you actually need is the Ram Gooseneck to 5th Wheel Trailer Coupler Adapter # KPG5-R30IP, which...
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  • Base Plate Size And Capacity Differences On The Ram Gooseneck To 5th Wheel Coupler Adapter
    I contacted the manufacturer on your behalf regarding your question. Per Ram, the plate is the same 10"x10" size on the # KPG5-R25-IP and the # KPG5-R30IP. Our review video also had it measured the same. The capacity difference increase for the 30k comes by way of the welded belly band around the bottom of the outer tube. The 30k capacity also comes from the .275" inner tube wall thickness vs the .24" inner tube wall thickness on the 25K. Included are video resources for more information...
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  • Dimensions of the Ram Gooseneck to 5th Wheel Trailer Coupler Adapter
    The overall length of the Ram Gooseneck to 5th Wheel Trailer Coupler Adapter - Round - 30K item # KPG5-R30IP is 29". It is 14" from the top of the tube to the first adjustment hole. I have attached a diagram detailing these measurements.
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    Image 1 for
  • Best Gooseneck Trailer to Fifth Wheel Adapter Solution for Towing with Short Bed Truck
    You are definitely on the right track to coming up with the best solution to allow you to tow your fifth wheel trailer and gooseneck trailer. Since you have a short bed truck it is important that you have turning clearance which converting the gooseneck to a king pin does allow you to still use the slider hitch and have the clearance you need. Since you have the standard 4 inch tube on your trailer the king pin adapter part # KPG5-R30IP is the way to go. This will fit in place of what...
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  • Will Ram Gooseneck to Fifth Wheel Adapter Use Same Connection as Tractor Trailer
    Tractor trailers do use fifth wheel hitches for connection so yes, the Ram Gooseneck to 5th Wheel adapter part # KPG5-R30IP would provide the connection needed for a gooseneck trailer as it will convert it to a fifth wheel king pin.
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  • Dimensions of the Pin Holes and the Pin Hole Diameter on the Ram Gooseneck to 5th Wheel Coupler
    The Ram Gooseneck to 5th Wheel Trailer Coupler Adapter, part # KPG5-R30IP, fits most standard round gooseneck outer tubes. The Pin Hole Diameter is 7/8 inches and the Adjustment Holes, center to center, are 2-11/16 inches apart, giving it a Range of 8 inches for Vertical Adjustment. The Tube Diameter is 4 inches and the Plate Dimensions are 9-7/8 inches long and 9-7/8 inches wide.
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  • Diameter of the Ram Gooseneck to 5th Wheel Trailer Coupler Adapter # KPG5-R30IP
    Yes, the outer diameter of the Ram Gooseneck to 5th Wheel Trailer Coupler Adapter # KPG5-R30IP is 4 inch.
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  • Recommended Adapters to Tow Gooseneck Trailer With 5th Wheel Hitch
    So you're wanting a king pin adapter that would take the place of your gooseneck coupler, is that correct? If that's the case, the best way to do that wouldn't be to add a pin box. You'd want to use a king pin adapter instead. Attempting to use an actual pin box would require lots of fabrication and engineering work to ensure the assembly would have the proper weight rating, as well as achieving the proper height so the trailer is towed level. The coupler adapter you need will depend...
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  • Towing a Gooseneck Trailer with a 5th Wheel Hitch and Availability of Adapter for 3-3/4 Inner Tube
    While we do not have an adapter that is 3-3/4 inches in diameter I do have a couple of possible solutions for you. First, you could replace both the inner and outer tubes using # KPG5-R30. A certified professional welder would have to perform this installation. This is a viable solution if you will be towing the trailer with a 5th wheel hitch all the time. Second, if your truck has industry standard 5th wheel rails you could use a gooseneck plate instead, such as # 16055.
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  • Weight Capacity of etrailer Goosesneck to Fifth Wheel Adapters # KPG5-R30IP and # KPG5-Q25-IP
    The etrailer fifth wheel adapters part # KPG5-R30IP and # KPG5-Q25-IP do not have vertical weight capacities. As long as the overall trailer capacity figure is not exceed of either you'd be safe. The part # KPG5-R30IP has a 30k capacity and the # KPG5-Q25-IP is rated for a 25k trailer.
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  • Picking Out Gooseneck to Fifth Wheel Adapter that Could Fit Diamond C FMAX 212 HDT Trailer
    Most likely the Ram Gooseneck to 5th wheel adapter part # KPG5-R30IP is what you'd need as this fits most gooseneck hitch tubes that have an inner tube diameter that is 4 inches. If you have a different setup let me know. Another popular setup is 4 inch square tube like with the part # KPG5-Q25-IP. I attached a link to a page that has all of the adapters we have for you to check out as well.
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  • Gooseneck Trailer Conversion to 5TH Wheel Hitch
    We have a great article (linked below) that discusses what you are looking to do. For a Round Adapter Tube # KPG5-R30IP. This inner tube fits most standard, round gooseneck outer tubes. It is 4" in diameter and has a vertical range of 8" with 2-11/16" from center of hole to center of hole. It is rated for 30,000lbs and features a 9-7/8" wide square plate. For a Square Adapter Tube # KPG5-Q30IP. This inner tube fits most standard, square gooseneck outer tubes. It is 4" square and has...
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  • Will Ram Gooseneck to 5th Wheel Trailer Coupler Adapter Fit 1998 Sundowner
    You will need the safety pin hole to use the # KPG5-R30IP. It should be pretty easy to drill a hole to make this work and then get a replacement pin # GCPN-PIN. Alternatively, you could get the # KPG5-R30 which includes the outer tube with the hole for the safety pin and replace what you have now.
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  • 5th Wheel Slider Hitch Adapter For Gooseneck Trailer
    You will need to lock out the sliding function on your Pull Right 5th wheel hitch to use the Ram Gooseneck to 5th Wheel Trailer Coupler Adapter item # KPG5-R30IP. If you can not lock out your slider than I recommend the Curt Spyder Gooseneck Trailer Hitch for Fifth Wheel Rails Item # 16085. This adapter mounts to industry standard 5th wheel rails, has a 2-5/16" trailer ball, comes with safety chain attachments, and also includes pins and clips for rail attachment. I have attached a picture...
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    Image 1 for
  • Can Lube Plate Be Used with Ram Gooseneck Coupler Adapter # KPG5-R30IP
    You can absolutely use a 10" lube plate such as the Curt # 16721 with the Ram Gooseneck Coupler Adapter # KPG5-R30IP to keep the hitch head lubricated and scratch free. You may just want to take a look at the manual for your particular 5th wheel hitch, as some will note a maximum thickness on a lube plate like this. If you can tell me what model hitch you have I can also check this for you.
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  • Adapting A Kauffman Gooseneck Trailer To A Fifth Wheel Hitch
    I am not sure exactly which model of Kauffman gooseneck trailer you have, but the easiest way to adapt to a 5th wheel hitch will be to use a coupler adapter. This will replace the gooseneck coupler inner tube with a traditional fifth wheel kingpin. We have the # KPG5-R30IP for a 4" round tube, or the # KPG5-Q30IP for a 4" Square tube. Both of these are rated for 30K so more than enough capacity wise for your trailer. You can use the Load bearing pins # GCPN-PIN to make your connection....
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  • Recommended Adapter To Connect Gooseneck Horse Trailer To 5th Wheel Trailer Hitch In Truck
    We have exactly what you are looking for. I recommend the Ram Gooseneck to 5th Wheel Trailer Coupler Adapter - Round - 30K # KPG5-R30IP which will replace the coupler on your trailer and give it a king pin to attach to your existing 5th wheel hitch. This adapter has a 4" outer diameter so as long as the matches the I.D. of your gooseneck trailers outer tube this will fir perfectly. If your trailer has a square outer tube then I recommend the # KPG5-Q30IP instead. This coupler adapter...
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  • Recommended Gooseneck to 5th Wheel Hitch Adapter
    It sounds like your 5th wheel trailer already has what it needs and you just need the adapter for the Ram Gooseneck if I understand correctly. If your gooseneck hitch has a round tube, then I recommend the Gooseneck to 5th Wheel Trailer Coupler Adapter # KPG5-R30IP. If it has the square tube, then I recommend the Ram Gooseneck to 5th Wheel Trailer Coupler Adapter Inner Tube - Square - 30,000 lbs # KPG5-Q30IP which has a 4 inch tube. Both options have a plate that is 9-7/8 by 9-7/8 inches....
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  • Can a Gooseneck Horse Trailer Be Converted To Work With Andersen Ultimate 5TH Wheel Hitch System?
    You may be able to convert your gooseneck horse trailer if you can remove the gooseneck ball sleeve on your particular trailer. We do have inserts like the # KPG5-R30IP which is 4" in diameter. Then you would be able to get a 2nd coupler attachment from Andersen to use it with their 5th wheel connection. Do be sure to also check the height adjustments you have available as you may not have height on your horse trailer since they typically aren't designed with the tallest trucks in mind.
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  • Gooseneck to 5th Wheel Trailer Coupler Adapter For Demco Autoslide 5th Wheel Hitch
    For a gooseneck to 5th wheel trailer that you can use, the recommended option simply depends on the shape of your gooseneck tube, whether it is square or round. The inside dimension of a square gooseneck tube should be 4 inches, while the inside dimension of a round gooseneck tube should be 4 inches in diameter. If that's what you have you can use one of the following: - Round Tube: Gooseneck to 5th Wheel Trailer Coupler Adapter # KPG5-R25-IP - Square Tube: Gooseneck to 5th Wheel Trailer...
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  • Is There A Way To Connect My Gooseneck Trailer To A 5th Wheel Hitch?
    We do indeed have a few options for connecting your gooseneck trailer to your B&W Companion slider. This will depend on if you have a square tube or round tube so I have both options listed below: etrailer.com Gooseneck to 5th Wheel Trailer Coupler Adapter - Square - 25,000 lbs # KPG5-Q25 etrailer.com Ram Gooseneck to 5th Wheel Trailer Coupler Adapter - Round - 30K # KPG5-R30IP Either of these will replace your current gooseneck coupler and lock right into the jaws of your B&W Companion....
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  • What Are The Weight Limits On The B And W Companion 3000
    You won't have any problems with the companion model 3000. It has a Gross Trailer Weight (GTW) of 18,000 pounds and a Tongue Weight of 4,500 pounds. We have several options to help you convert to a 5th wheel trailer too. One of those is the Gooseneck to 5th Wheel Trailer Coupler Adapter - Square - 25,000 lbs # KPG5-Q25. Or we have the Ram Gooseneck to 5th Wheel Trailer Coupler Adapter - Round - 30K # KPG5-R30IP. If you give us the specs on your trailer I can help you get the best parts...
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Do you have a question about this Gooseneck and Fifth Wheel Adapter?


Info for this part was:

Employee Michael H
Expert Research:
Michael H
Employee Jameson C
Expert Research:
Jameson C
Employee Jeff D
Installed by:
Jeff D
Employee Wilson B
Updated by:
Wilson B
Employee Mike S
Updated by:
Mike S
Employee Amanda M
Written by:
Amanda M

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