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  1. Gooseneck and Fifth Wheel Adapters
  2. etrailer
  3. Gooseneck Trailer to Fifth Wheel Hitch
  4. Replaces Inner and Outer Tubes
  5. 30000 lbs GTW
  6. Gooseneck Coupler Adapters
Ram Gooseneck to 5th Wheel Trailer Coupler Adapter - Round - 30,000 lbs

Ram Gooseneck to 5th Wheel Trailer Coupler Adapter - Round - 30,000 lbs

Item # KPG5-R30
Our Price: $235.00
Gooseneck and Fifth Wheel Adapters
This item qualifies for Free Shipping
Shipping Weight: 66 lbs
Quantity: 
In Stock
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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 and outer tubes replace the gooseneck coupler on your trailer. Load-bearing pin included. 1-636-306-4830 to order etrailer gooseneck and fifth wheel adapters part number KPG5-R30 or order online at etrailer.com. Free expert support on all etrailer products. Guaranteed Lowest Price and Fastest Shipping for Ram Gooseneck to 5th Wheel Trailer Coupler Adapter - Round - 30,000 lbs. Gooseneck and Fifth Wheel Adapters reviews from real customers.
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  • Reviews (346)
  • Q & A (0)
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  • Why etrailer?

etrailer Gooseneck and Fifth Wheel Adapters - KPG5-R30

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

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 and outer tubes replace the gooseneck coupler on your trailer. Load-bearing pin included.


Features:

  • Gooseneck-to-5th-wheel adapter lets you tow your gooseneck trailer with a 5th-wheel hitch
    • Unique coupler fits the same as a gooseneck coupler with inner and outer tubes
  • Adjustable height to fit your application
  • Sturdy steel construction
  • Heavy-duty load-bearing pin included
  • SAE J2738 compliant


Specs:

  • Range of vertical adjustment: 8"
    • 2-11/16" From center of hole to center of hole
  • Inner tube diameter: 4"
  • Outer tube diameter: 4-1/2"
  • Length: 20"
  • Pin hole diameter: 7/8"
  • Plate dimensions: 10" long x 10" wide
  • Weight capacity: 30,000 lbs
  • 1-Year warranty


Dimensions of coupler plate


KP5G-R30 Ram Gooseneck to 5th Wheel Trailer Coupler Adapter - Round - 30,000 lbs





Customer Satisfaction Score:


Customer Reviews

Ram Gooseneck to 5th Wheel Trailer Coupler Adapter - Round - 30,000 lbs - KPG5-R30

Average Customer Rating:  4.8 out of 5 stars   (346 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 and outer tubes replace the gooseneck coupler on your trailer. Load-bearing pin included.

by:

Quality control kinda sucks with this one. I'm not happy with the crooked set screws primarily. Also not happy with the crooked load bearing pin holes that so many others mentioned. I bought this combo because it was only $[XX] more than the inner shaft by itself. Tried to get a partial refund or send it back but they want me to pay for shipping, so it's not worth it. I would recommend buying the Bulldog brand, might have better quality design.




by:

Shipping was fast and communication was very good.Will recommend and I will do more business thank you.




by:

Easy to install. I have my fifth wheel hitch in all summer for my RV so its great to have 1 hitch




by:

Good product. Exactly what I needed




by:

A great way to make your trailer more secure to your tow vehicle. No josseling around from a loose ball connection. Easy hook up, less jacking. Lower your Jack’s to the ground and snug it up. Unlatch and pull out.




by:

Excellent product easy to install. No more switching between 5th wheel and gooseneck hitch ball.




by:

Had to place holes for adjustable neck 90 to length of trailer, made pad catch on a corner when backing in. otherwise I've enjoyed the coupler




by:

This makes the changing between hitches very convenient.




by:

shipping was fast showed up in 3 days like told . was easy ordering very easy to install going to use it on a flatbed 25 foot trailer to haul tractors and big round bales or hay now going to be able to use semi tractor instead of pickup. going to put it to the test this weekend.




by:

THIS COUPLING IS EXACTLY WHAT I NEEDED, IT IS WELL BUILT AND I HAD IT IN TWO DAYS. FOUND YOU GUYS ON THE INTERNET. THANK YOU.




by:

Very sturdy and ready to weld in right out of the box. I’ve been using for a year now and it’s held up great.




by:

Was just as advertised. Nice quality with fast shipping . Thank you for your service.




by:

Great quality and great shipping the way all company's should operate thanks again




by:

Good product, fast service and delivery. Good communication. Very pleased with product and company.




by:

Great value, great service and very fast shipping.




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by:

the hitch is what we ordered and fit our needs. people were friendly and helpful.




by:

Exactly what the description says it would be, and arrives right on time..... Thank you for everything




by:

George has made this a easy transaction and fast delivery




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VERY WELL BUILT




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

  • 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.
    view full answer...
  • 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...
    view full answer...
  • 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.
    view full answer...
  • How to Determine Fit of Gooseneck to 5th Wheel Trailer Coupler Adapter
    The Ram Gooseneck to 5th Wheel Trailer Coupler Adapter # KPG5-R30 is simply a replacement for the gooseneck coupler currently on your trailer; it will replace both the inner and outer tubes of your current coupler. This adapter has a 4 inch inner tube and 4-1/2 inch outer tube and you will need to have a qualified professional install the brand new coupler.
    view full answer...
  • Solution to Convert Gooseneck Trailer Coupler to Fifth Wheel King Pin
    We don't have an inner tube replacement king pin adapter that you can replace yours with but you could use the Ram Gooseneck to 5th Wheel Adapter part # KPG5-R30 which would require you to cut off the outer tube you have now and weld this in place if it. Regardless of if you could find an inner tube setup that would fit it wouldn't work since the king pins sit up a lot higher than gooseneck couplers. This is due to fifth wheel hitches being typically about 12 inches taller than gooseneck...
    view full answer...
  • Weight Capacity of Ram Gooseneck to 5th Wheel Trailer Coupler Adapter
    The Ram Gooseneck to 5th Wheel Trailer Coupler Adapter # KPG5-R30 that you referenced does not have a stated pin weight capacity. As long as the trailer you tow with it weighs less than 30,000 lbs this would be safe to use.
    view full answer...
  • 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 # 49080.
    view full answer...
  • Availability of Inner Tube Portion of Ram Gooseneck to 5th Wheel Trailer Coupler # KPG5-R30
    The part # KPG5-R25-IP is just the inner tube of the part # KPG5-R30 that you referenced.
    view full answer...
  • 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...
    view full answer...
  • 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...
    view full answer...
  • 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.
    view full answer...
  • 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.
    view full answer...
  • 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.
    view full answer...
    Image 1 for
  • 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...
    view full answer...
  • 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...
    view full answer...
  • 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...
    view full answer...
  • 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.
    view full answer...
  • How Does the Ram Gooseneck to 5th Wheel Trailer Coupler Adapter Work
    I am not sure I understand what you are asking. The Ram Gooseneck to 5th Wheel Trailer Coupler Adapter part # KPG5-R30 installs on the trailer, not the tow vehicle. It is designed to replace the gooseneck coupler on the trailer and allow for connection to a 5th wheel hitch as opposed to connection with a gooseneck hitch ball. The old coupler will need to be cut off and the new outer tube will need to be welded on the trailer by a professional welder. The inner tube will then slide in the...
    view full answer...
  • How to Tow 5th Wheel Trailer With Gooseneck Trailer Hitch
    While we do have a way for you to tow your 5th wheel trailer with your truck that has a gooseneck trailer hitch, the Ram Gooseneck to 5th Wheel Trailer Coupler Adapter # KPG5-R30 only fits gooseneck trailers so it wouldn't work for you. The best way to tow a 5th wheel trailer with the gooseneck ball in your truck is with the Demco Recon Gooseneck-to-5th Wheel Trailer Hitch Adapter # DM8550045. This is a 5th wheel hitch that attaches directly to your truck's gooseneck ball, allowing you...
    view full answer...
    Image 1 for
  • 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...
    view full answer...
    Image 1 for
  • Solution for Gooseneck Trailer to Connect to Fifth Wheel Hitch
    You could cut off your gooseneck coupler/tube and have the # KPG5-R30 that you mentioned welded in place of it. Or if you have a 4 inch square outer tube you could use the adapter part # BD0289650300.
    view full answer...
  • 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.
    view full answer...
  • 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...
    view full answer...
  • 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....
    view full answer...


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Info for this part was:

Employee Mike L
Expert Research:
Mike L
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:
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