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  1. 5th Wheel Gooseneck Adapter
  2. etrailer
  3. Gooseneck Trailer to Fifth Wheel Hitch
  4. Replaces Inner Tube
  5. Gooseneck Coupler Adapters
  6. 25000 lbs GTW
Gooseneck to 5th Wheel Trailer Coupler Adapter - Inner Tube - Round - 25K lbs
etrailer

Gooseneck to 5th Wheel Trailer Coupler Adapter - Inner Tube - Round - 25K lbs

Part Number: KPG5-R25-IP
In Stock
$143.74
Retail:$159.61
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5th Wheel Gooseneck Adapter
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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, heavy-duty load-bearing pin (GCPN-PIN) is sold separately. 1-800-940-8924 to order etrailer 5th wheel gooseneck adapter part number KPG5-R25-IP or order online at etrailer.com. Free expert support on all etrailer products. Great prices and Fastest Shipping for Gooseneck to 5th Wheel Trailer Coupler Adapter - Inner Tube - Round - 25K lbs. 5th Wheel Gooseneck Adapter reviews from real customers.
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  • Reviews (705)
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etrailer 5th Wheel Gooseneck Adapter - KPG5-R25-IP

  • Gooseneck Trailer to Fifth Wheel Hitch
  • Replaces Inner Tube
  • Gooseneck Coupler Adapters
  • etrailer
  • 25000 lbs GTW
  • Adapts Trailer
  • No Offset
  • 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, heavy-duty load-bearing pin (GCPN-PIN) is sold separately.


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
  • Heavy-duty load-bearing pin (GCPN-PIN) is sold separately
  • SAE J2638 compliant


Specs:

  • Tube diameter: 4"
  • Range of vertical adjustment: 8"
    • 2-11/16" From center of hole to center of hole
  • Pin hole diameter: 13/16"
  • Plate dimensions: 10" long x 10" wide
  • Weight capacity: 25,000 lbs
  • 1-Year warranty


Dimensions of coupler plate


KPG5-R25IP Ram Gooseneck to 5th Wheel Trailer Coupler Adapter Inner Tube and Pin - Round - 25,000 lbs

KP5G-R25IP





Customer Satisfaction Score:


Customer Reviews

Gooseneck to 5th Wheel Trailer Coupler Adapter - Inner Tube - Round - 25K lbs - KPG5-R25-IP

Average Customer Rating:  4.7 out of 5 stars   (705 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, heavy-duty load-bearing pin (GCPN-PIN) is sold separately.

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See what our Experts say about this etrailer 5th Wheel Gooseneck Adapter

  • Adapters to Allow Towing Gooseneck Trailer with 5th Wheel Hitch and Base Rails
    If you have a set of industry-standard above-bed 5th wheel base rails in your truck you can tow a gooseneck trailer by installing an adapter such as the Curt Spyder # 16085 or the Curt 25k # 16055. All of these 5th wheel rail gooseneck adapters are standardized to fit into any brand of 5th wheel base rails. Note that some of these like the Pro Series have offset ball placement which gives you the option to install the plate with the ball either more forward or more rearward which alters...
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  • Adapter Solution to Convert Gooseneck Trailer to Fifth Wheel King Pin
    We have gooseneck trailer to fifth wheel king pin adapters that would work great on your trailer but it really depends on what type of gooseneck trailer you have now. For example if you have a square tube gooseneck you could use the part # BD028965030 or for a round tube part # PKG5-R25-IP. Or you could replace the outer tube as well and use the Bulldog # BD0289590300. For an air to electric brake controller the Hayes part # HA100400C is the kit you want. This ties into the air brake setup...
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  • How to Use B&W Companion 5th Wheel Hitch W/ a Gooseneck Trailer
    Bruce, the easiest way to get your Gooseneck trailer to work with your B&W Companion OEM 5th Wheel Hitch for Ram Towing Prep Package # BWRVK3600 is to use a Gooseneck to 5th wheel adapter # KPG5-R25-IP. This is going to get installed on your Gooseneck and convert it to a 5th wheel king pin so that you can use your B&W Companion. This adapter also has a 25k capacity, has an adjustable height, and has a 4" diameter tube. You're also going to need the Replacement Load Bearing Pin for Ram...
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  • Parts Needed To Pull A Gooseneck Trailer Behind a 2007 Kenworth T800
    I do see your Holland FW35 is designed to fit a 2" kingpin like the one used on both the 25K # KPG5-R25-IP and 30K # KPG5-R30IP coupler adapters you looked at. For the wiring you will need to create a custom adapter. First you will need the 7-Pole Round Pin Connector # PK11702. This will need to be wired to the Tail Light Converter # HM48847 since the 7-pin connector on your Kenworth has separate wiring for the brake and turn signals and a 7-way Blade # PK12-707E combines the brake and...
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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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  • Does Gooseneck to 5th Wheel Adapter KPG5-R25-IP Come With Pin
    You will need to get the pin separate for the Gooseneck to 5th Wheel Trailer Coupler Adapter # KPG5-R25-IP. The correct part is the Replacement Load Bearing Pin for Ram Gooseneck Couplers # GCPN-PIN.
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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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  • Can Gooseneck to 5th Wheel Coupler Adapter Be Used with Demco Hijacker Hitch
    The Demco Autoslide 5th Wheel Trailer Hitches are designed to work with standard pin boxes 12" - 14" wide (which we do mention on the Hijacker product pages) so it does make sense that your Gooseneck to 5th Wheel Trailer Coupler Adapter # KPG5-R25-IP with the 10" x 10" plate wouldn't fit properly. I've heard of people welding on 1" spacers on either side of that kind of adapter you're using, but Demco doesn't really recommend doing this with their capture plates so it's one of those "do...
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  • Safety Chains For Gooseneck to 5th Wheel Trailer Coupler Adapter # KPG5-R25-IP?
    With the Gooseneck to 5th Wheel Trailer Coupler Adapter # KPG5-R25-IP you are not required to use safety chains. Since this uses a 5th wheel connection chains are not required. Only ball type connections like you have with a regular gooseneck require chains. If you are only using this temporarily or for certain vehicles you will want to hook the chains up out of the way. If this is going to be the only towing method you can remove the chains.
    view full answer...
  • Does Gooseneck to 5th Wheel Trailer Coupler Adapter # KPG5-R25-IP Fit All Gooseneck Couplers
    Gooseneck to 5th wheel adapter # KPG5-R25-IP does fit most standard gooseneck trailer round outer coupler tubes. The outer tube would have to have an inner diameter a little more than 4 inches for the adapter to fit.
    view full answer...
  • Recommended 5th Wheel Sliding Hitch For 2015 Ford F-250 4x4 and Gooseneck Trailer
    The Demco Hijacker Autoslide 5th Wheel Trailer Hitch w/ Slider - Single Jaw - Above Bed - 18,000 lbs # DM8550034 is an excellent hitch for your 2015 Ford F-250 Super Duty 4x4. I personally think this is the best hitch available for short bed trucks because it has the autoslide ability to give you the clearance you need for safe turning. This hitch connects to industry standard 5th wheel rails, so I recommend the Demco Hijacker Premier Series Above-Bed Base Rails and Custom Installation...
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  • Angle of the Height Adjustment Holes for etrailer.com Gooseneck to 5th Wheel Adapter KPG5-R25-IP
    The tube of the Gooseneck to 5th Wheel Trailer Coupler Adapter # KPG5-R25-IP sits perpendicular to the square plate towards the bottom of it as depicted in the attached picture. The holes are perpendicular (at a 90 degree angle) as well.
    view full answer...
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  • Gooseneck to 5th Wheel Trailer Coupler Adapter for 22GN BigTex Trailer
    The Gooseneck to 5th Wheel Trailer Coupler Adapter item # KPG5-R25-IP is rated for trailers up to 25,000 lbs and fits gooseneck trailers with a 4" round tube. This adjustable adapter has 8" of range. If your 22GN Big Tex Trailer has a 4" tube this adapter would be a great fit. I have linked a couple of review videos.
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  • Will Gooseneck to Fifth Wheel Adapters Fit a Fifth Wheel Hitch on a Kenworth Over the Road Tractor
    The most common size for a kingpin that fits a fifth wheel hitch is 2 inches in diameter. We have checked the kingpins on some of the truck trailers here on our lot and they measured 2 inches. I would recommend to measure the opening on your fifth wheel hitch with the jaw(s) closed to see if your Kenworth tractor will fit a 2 inch diameter kingpin. The gooseneck to fifth wheel adapters will come in either a square tube design or a round tube design. You will need to choose the adapter...
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  • Gooseneck To Fifth Wheel Adapter For A Big Tex Gooseneck Trailer
    The Gooseneck to 5th Wheel Trailer Coupler Adapter - Inner Tube - Round - 25K lbs Item # KPG5-R25-IP is designed as an adapter for goose neck trailers with a 4" round tube. As long as your Big Tex trailer has a 4" round tube this adapter is going to be compatible.
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  • Pulling Gooseneck Trailer w/ 5 ton Truck w/ Custom Fold-Away 5th Wheel Hitch
    If the fifth wheel hitch is mounted using industry-standard 5th wheel rails (see photo), you can simply remove the existing fifth wheel, and mount an adapter like # 16055. If your gooseneck trailer has a removable coupler, we offer some king pins that will actually slide into the square or round tube the coupler fits into. For a round 4 inch diameter tube, use # KPG5-R25-IP or # KPG5-Q25-IP for a square tube that measures 4 inches square. If you have some other set up, please reply with...
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    Image 1 for
  • How To Tow a Gooseneck Trailer with Brakes Using a Semi Tractor
    In order to haul your gooseneck trailer with a fleet of semi-tractors you will need to make your own adapter harness which will then make for a plug and play connection but they don't make anything pre-assembled for this out of the box to my knowledge. In order to make the adapter you will need the Pollak Heavy-Duty, 7-Pole, Round Pin, Trailer Wiring Connector part # PK11700, the Roadmaster Brite-Lite Wiring Converter part # RM-732, and the Pollak Black Plastic, 7-Pole, RV Blade-Style Trailer...
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  • Purpose of Holes on etrailer.com Gooseneck to 5th Wheel Trailer Coupler # KPG5-R25-IP
    The holes on the side of the etrailer.com Gooseneck to 5th Wheel Trailer Coupler Adapter # KPG5-R25-IP are used to secure it into place inside the gooseneck outer tube and offer height adjustments. This type of adapter is not available without these mounting holes. I have attached a short video review that you can check out as well. If this won't work for your particular setup please let me know what brand gooseneck hitch you have installed on your truck and I will be happy to make a...
    view full answer...
  • Comparing Square Gooseneck to 5th Wheel Adapters To Round Adapters
    The Ram Gooseneck to 5th Wheel Trailer Coupler Adapter Inner Tube - Square - 30,000 lbs # KPG5-Q30IP is a 4 inch square tube with a 7/8 inch pin hole diameter. The holes are 2-11/16 inches on center and have a total adjustment height of 8 inches. The king pin is the standard size of 2 inches diameter and also the standard length of just over 3.305 inches. This will fit the inside the outer square tube of most gooseneck trailers. The round adapters are available as well like # KPG5-R25-IP....
    view full answer...
  • Overall Height of Gooseneck to 5th Wheel Trailer Coupler Adapter # KPG5-R25-IP
    The overall height of the coupler tube part # KPG5-R25-IP is 23-7/16 inches.
    view full answer...
    Image 1 for
  • Will the Ram Gooseneck to 5th Wheel Trailer Coupler Adapter Inner Tube Work On a Semi
    The Ram Gooseneck to 5th Wheel Trailer Coupler Adapter Inner Tube part # KPG5-Q30IP and Gooseneck to 5th Wheel Trailer Coupler Adapter part # KPG5-R25-IP both have an industry standard 2" diameter kin pin which most semis use so yes it will work.
    view full answer...
  • Do You Have Adapters to Convert a Gooseneck Trailer to a Fifth Wheel
    Yes, we have a couple different solutions that could solve your problem. Since you have a fifth wheel with rails already in your bed, I would suggest using a Gooseneck plate built for fifth wheel rails like Curt part # 16055. If you will be towing other fifth wheel trailers and need to keep your fifth wheel on the truck at all times and do not want to pull the fifth wheel on and off, we do have adapter tubes. If you have a round gooseneck coupler with a 4 inch outer diameter, you could...
    view full answer...
  • What Coupler Adapter Can I Use With My Load Trail 12K Gooseneck Trailer
    You are correct, the Bulldog Gooseneck-to-5th-Wheel Trailer Coupler Adapter has a 15ยบ offset. Instead, you could use something like the Gooseneck to 5th Wheel Trailer Coupler Adapter - Inner Tube - Round - 25K lbs, part # KPG5-R25-IP. This has a round inner tube with a 25K lbs weight capacity. I have included a product description link and a video review link below.
    view full answer...
  • Parts Available for Converting a Gooseneck Trailer for a Fifth Wheel Hitch
    We do have a couple adapters that will take your gooseneck trailer to a fifth wheel king pin. One is part # KPG5-R25-IP. The tube is 4 inches outer diameter round so if you have an adjustable gooseneck, this part will slip right in. If you have a square tube gooseneck, you could use part # KPG5-Q25-IP. This tube is 4 inches square. I've linked the complete selection for you.
    view full answer...


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Info for this part was:

Employee Michael H
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Michael H
Employee Jameson C
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Employee Jeff D
Installed by:
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Employee Randy B
Installed by:
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Employee Dustin K
Video Edited:
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Employee Wilson B
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Employee Mike S
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Employee Michael B
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Employee Amanda M
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