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

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

Item # KPG5-R30IP
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Gooseneck and Fifth Wheel Adapters
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Ram Gooseneck to 5th Wheel Trailer Coupler Adapter - Round - 30K No Offset KPG5-R30IP
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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. Call 800-298-8924 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. Guaranteed Lowest Price and Fastest Shipping for Ram Gooseneck to 5th Wheel Trailer Coupler Adapter - Round - 30K. Gooseneck and Fifth Wheel Adapters reviews from real customers.
  • All Info
  • Reviews (33)
  • Q & A (13)
  • Videos (1)
  • Photos
  • Why etrailer?

etrailer Gooseneck and Fifth Wheel Adapters - KPG5-R30IP

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

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 9-7/8" wide
  • Weight capacity: 30,000 lbs
  • 1-Year warranty


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





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

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




Video Transcript for etrailer Gooseneck and Fifth Wheel Adapters - Adapts Trailer - KPG5-R30IP Review

Today we're going to take a look at the round tube gooseneck to fifth wheel trailer coupler adapter with a 30,000 pound weight capacity. This gooseneck to fifth wheel adapter will let you tow your gooseneck trailer with a fifth wheel hitch. It has the round innertube here that'll fit most standard round gooseneck outer tubes and it has the king pin at the bottom here that'll slide into a fifth wheel hitch. It you notice, it is an adjustable height. You can see it's a four hole design to fit your application. It is a sturdy steel construction.

If you notice right down here it has the heavy gusseting between the tube and the plate. It is a raw finish. This is also SAE J2738 compliant. A few specs on this. The tube diameter, which will be measured outside to outside since this is the innertube. If we put a ruler on that, you can see it's right at four inches for the tube diameter.

Now it does have the range or vertical adjustment, I mentioned the four hole design. The range, we'll measure from the center of this bottom hole to the center of the top hole and it's going to be right at eight inches, so it's got an eight inch vertical adjustment range. The measurement between each hole, center to center is going to be right at 2 11/16. The pin hole diameter, this large hole here, is 7/8 of an inch. The plate is a square plate, so it's going to measure 10 inches by 10 inches.

The king pin at the very bottom that slides into your fifth wheel hitch is going to be an industry standard two inch diameter king pin and the weight capacity on this is 30,000 pounds. That should do it for the review on the round tube gooseneck to fifth wheel trailer coupler adapter with a 30,000 pound weight capacity.


Customer Reviews

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

Average Customer Rating:  4.7 out of 5 stars   (33 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.

- KPG5-R30IP
by:

Great fit well built 269434



- KPG5-R30IP
by:

I was told about your website by an RV dealer, I was looking for a goose neck to fifth wheel adapter for a horse trailer I had just purchased. I found what I was looking for at etrailer and ordered it, it was delivered in a couple days and the piece looked great and worked wonderful I was very impressed with the short turnaround time and would highly recommend your business 511264



- KPG5-R30IP
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. 445501



- KPG5-R30IP
by:

Prompt delivery. Have not towed with the adapter yet, but product appears to be very heavy duty with thick walled pipe and very sturdy welds. I am anxious to test it. This product allows me to use a fifth wheel hitch to haul my 34' camper trailer and quickly convert to haul my 35' gooseneck trailer with my tractor and implements. 374168


Comments
I could not be more pleased with my kingpin adapter. It exceeds all my expectations and makes the conversion a simple process. My brother and me farm together and he is very impressed with the adapter. Others I have shown it to agree. I keep your site bookmarked for future reference.
RICHARD K - 04/30/2018

37927

- KPG5-R30IP
by:

Hitch sits to high at it's lowest setting both 5th wheel and Adapter set as low as possible .holes in Adapter not drilled in line with plate sits cockeyed on Trailer. Painted yellow for safety. 667825



- KPG5-R30IP
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. 369875



- KPG5-R30IP
by:

Heavier/stouter than I expected it to be. Fits well. 4 stars instead of 5 because it is raw steel, not painted, primed, or anything, and it was covered with a light oil, I presume for rust preventative, but that made it messy to handle, and paint will not stick to the oil as delivered. Very well built, and strong, though. It will just require some prep before I paint it, which I hadn't counted on. 739921



- KPG5-R30IP
by:

Great product and works as intended. 736758



- KPG5-R30IP
by:

Excellent workmanship. Ordered another one for my other trailer. 736397



- KPG5-R30IP
by:

Great product at a great price. 734696



- KPG5-R30IP
by:

Great! 733777



- KPG5-R30IP
by:

Works great for adapting the goose neck trailer into being able to be used with the 5th wheel plate in the truck 715043



- KPG5-R30IP
by:

Good product. Very well built. Use this on my gooseneck to adapt to my single axle semi 704358



- KPG5-R30IP
by:

I use it on 2 of my trailers. It works great for me i can pull my trailers with our semi when i need to. 661988



- KPG5-R30IP
by:

This was a perfect fit for our trailer and was an easy install. 656736



- KPG5-R30IP
by:

Better than what I expected,heavy duty well constructed,reasonably priced ,fast delivery Now I can tow my trailer with 2 different vehicles one with 5th wheel and the other gooseneck 5 stars 590969


Comments
LOVE IT
Eddie - 12/16/2019

63852

- KPG5-R30IP
by:

Works perfect. You do need to prime and paint it. Other than that it’s great!! 588005



- KPG5-R30IP
by:

Makes switch from gooseneck ball hitch trailers to the fifth wheel very easy and only moments to do. Transporting for a living every advantage time wise is a plus. 513040



- KPG5-R30IP
by:

perfect 505752



- KPG5-R30IP
by:

The price was less than I expected for a 30,000 lb. king pin stem. Impressive machining of the parts and nice big welds. Fits well, holes all line up. Professional people that have the goods to deliver and do what they say. 448276



- KPG5-R30IP
by:

Fast delivery. Will use in the future 411233



- KPG5-R30IP
by:

great product, glad i purchased it. good price also 405629



- KPG5-R30IP
by:

Was delivered early: Great Easy to install: Great Not expensive: Great Great 397427



- KPG5-R30IP
by:

George is exceptional with customer service. This is the second 5th wheel conversion hitch I've ordered from them. Super fast shipping and easy process. I'll be a customer for life!! 387493



- KPG5-R30IP
by:

Fast shipping. Item as described. Very good transaction! Thanks!! 383889


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Show More Reviews

Ask the Experts about this etrailer Gooseneck and Fifth Wheel Adapters

  • 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...
  • Safety Chains Required When Using An Adapter to Tow Gooseneck Trailer w/ A 5th Wheel Hitch
    I've spoken with a few of my towing industry contacts, who tell me that even if you use an adapter like the # KPG5-R30IP, safety chains should still be used. If the fifth wheel hitch you are using is compatible with industry standard bed rails, then you can use part # RP50223 to provide an attachment point for the safety chains. To prevent the chains from snagging on anything, you'll need to ensure that the safety chains are long enough to allow the trailer to make turns, but no longer...
    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...
  • Fifth Wheel Rail Mounted Gooseneck Hitch for 2003 Chevy Silverado
    If your existing Reese bed mounted fifth wheel rails have slots in them that are 10 inches apart (center to center, side to side) and 22 inches apart (center to center, front to back), a rail mounted gooseneck ball like part # RP58079 would work great for you. Using the rail mounted ball would be a simpler solution than the # KPG5-R30IP you referenced, which would require you to use a fifth wheel hitch. I've provided a diagram showing the measurements I mentioned above, so you can...
    view full answer...
  • 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...
    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...
  • 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...
  • Recommended Gooseneck Hitch Ball to 5th Wheel Trailer Adapter
    The Fifth Wheel Trailer King Pin # 337KP20050 is a weld on king pin to make your trailer compatible with 5th wheel hitches. If you want the gooseneck trailer to 5th wheel king pin adapter, you can use the Ram Gooseneck to 5th Wheel Trailer Coupler Adapter Inner Tube - Square # KPG5-Q30IP or round # KPG5-R30IP. If you have a gooseneck hitch installed in your truck and you have a 5th wheel trailer, then you will want the Demco Recon Gooseneck-to-5th Wheel Trailer Hitch Adapter # DM8550045...
    view full answer...
  • 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....
    view full answer...
  • 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...
  • Recommended 5th Wheel Rails and Gooseneck Conversion for 2003 Dodge Ram 1500 with 6.5 Foot Bed
    For your 2003 Dodge Ram 1500 Short box, the design of your gooseneck trailer will dictate whether you need an offset hitch ball or a slider hitch with a gooseneck adapter like # KPG5-R30IP or # KPG5-Q30IP. I've also attached the page to many other options that will adapt a gooseneck to work with a sliding 5th wheel hitch. A great option for a gooseneck trailer with a short box truck is the B&W Extend-A-Goose Gooseneck Coupler - 2-5/16" Ball - 10" Offset - 24,000 lbs # BWTEXA4200 to...
    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,...
    view full answer...

Do you have a question about this Gooseneck and Fifth Wheel Adapter?




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Info for this part was:

Expert Research:
Michael H
Expert Research:
Jameson C
Installed by:
Jeff D
Updated by:
Sarah W
Updated by:
Mike S
Written by:
Amanda M

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