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  1. Gooseneck and Fifth Wheel Adapters
  2. CURT
  3. Gooseneck Hitch to Fifth Wheel Trailer
  4. Connects to Gooseneck Hole
  5. Hitch Adapters
  6. 20000 lbs GTW
Curt X5 5th Wheel Base Rails Adapter for B&W Turnoverball Gooseneck Trailer Hitches - 20,000 lbs

Curt X5 5th Wheel Base Rails Adapter for B&W Turnoverball Gooseneck Trailer Hitches - 20,000 lbs

Item # 16310
Retail:$894.95
Our Price: $704.95
You Save: $190.00
Gooseneck and Fifth Wheel Adapters
Shipping Weight: 100 lbs
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16310 - 20000 lbs GTW CURT Adapts Truck
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Install this adapter in the square ball hole of your B&W Turnoverball gooseneck hitch to get above-bed base rails for your fifth-wheel trailer hitch. Universal rails provide attachment points in your truck bed for a standard fifth-wheel hitch. 1-800-940-8924 to order CURT gooseneck and fifth wheel adapters part number 16310 or order online at etrailer.com. Free expert support on all CURT products. Great prices and Fastest Shipping for Curt X5 5th Wheel Base Rails Adapter for B&W Turnoverball Gooseneck Trailer Hitches - 20,000 lbs. Gooseneck and Fifth Wheel Adapters reviews from real customers.
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  • Reviews (262)
  • Q & A (0)
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CURT Gooseneck and Fifth Wheel Adapters - 16310

  • Gooseneck Hitch to Fifth Wheel Trailer
  • Connects to Gooseneck Hole
  • CURT
  • Hitch Adapters
  • 20000 lbs GTW
  • No Offset
  • Adapts Truck
  • Fixed Height

Install this adapter in the square ball hole of your B&W Turnoverball gooseneck hitch to get above-bed base rails for your fifth-wheel trailer hitch. Universal rails provide attachment points in your truck bed for a standard fifth-wheel hitch.


Features:

  • Adapter mounts in your gooseneck trailer hitch to supply the above-bed base rails necessary for installing a 5th-wheel hitch
    • Works with B&W standard center Turnoverball hitches
    • Compatible with Curt, B&W, Demco Hijacker Premier Series, Draw-Tite, Hidden Hitch, Husky, Reese, and Valley above-bed 5th-wheel trailer hitches
  • Fast, easy installation
    • Drop adapter into square gooseneck ball hole and lock in place
  • Rubber pads help prevent the rails from rattling and sliding in the truck bed
  • Sturdy steel construction
  • Black carbide powder coat finish resists corrosion
    • Coated in liquid Aquence for superior durability and rust resistance
  • Assembled in the USA


Specs:

  • Gross towing weight: 20,000 lbs
  • Vertical load limit: 4,000 lbs


Notes:

  • Bed liners and bed mats may affect the fit of this adapter and trimming may be necessary
  • Will not work with fifth-wheel hitches or pin boxes that rotate.
  • Will not work with auto-slide fifth-wheel hitches.
  • Will not work with Husky 10-26K or 10-16K fifth-wheel sliders.
  • Will not work with B and W Patriot fifth-wheel sliders.
  • Will not work with Curt S20 sliders.
  • Will not work with any 2013 - 2016 Dodge Ram 3500 or 2014 - 2018 Dodge Ram 2500 trucks that have a B&W Turnoverball gooseneck hitch installed.
  • Will not work with any 2007 - 2016 Toyota Tundra truck that has a B&W Turnoverball gooseneck hitch installed.
  • Will not work with 2017 or newer Ford F-250 or F-350 trucks that have a B&W Turnoverball gooseneck hitch installed.
  • When using this adapter, you may have to remove the safety chain loops from your gooseneck hitch if they are mounted front/back rather than side to side.


16310 Curt X5 Fifth Wheel Adapter w/ Square Shank for B and W Turn Over Ball Hitches

Installation Details 16310 Installation instructions



Customer Satisfaction Score:


Customer Reviews

Curt X5 5th Wheel Base Rails Adapter for B&W Turnoverball Gooseneck Trailer Hitches - 20,000 lbs - 16310

Average Customer Rating:  4.7 out of 5 stars   (262 Customer Reviews)

Install this adapter in the square ball hole of your B&W Turnoverball gooseneck hitch to get above-bed base rails for your fifth-wheel trailer hitch. Universal rails provide attachment points in your truck bed for a standard fifth-wheel hitch.

by:

Great product! Ive pulled a 42' to Hell and back not one problem. It is heavy, but it's very solid. My fifth wheel hitch fit straight in. Way cheaper than having to put rails in if you have a factory ball hitch in the bed. Its It's also nice that it's removable so you can haul furniture, or things that can't sit crooked ect. Great product, should last forever. Definitely would recommend



by:

Received the Curt X5 B&W turnover ball adapter yesterday. Would have been easier to drop in with two people but I was able to do it myself. Dropped right in, and in less then 15 seconds it was dropped and locked. Saved me lots of install time on 5th wheel rails. Set my RBW lil' rocker hitch on and pulled my 10,000 lbs 32' 5th wheel across town without issue. I feel that this is probably the strongest way to go when running a 5th wheel to turnover ball adapter, and its only about $*** which is a fraction of the cost for those other weird complex adapters that side load or flex. Customer feedback was great with optimal response time on my questions.



by:

I purchased the curt X5for my F250 Super Duty. Install and removal are a breeze. Holds mu 5th wheel plate great. Pulled 7000 miles a month after install.



by:

Finally installed this with my older Reese hitch. It rocked a little side to side and up and down. I was a little concerned but,once the trailer was hitched up,it worked pretty well.seems pretty solid going down the road. A good alternative to omitting a gooseneck.



by:

Solved a problem for me allowing me to use my gooseneck receiver and allows both types of hookup in a safe and manageable way.



by:

I feel the product works as it is intended but I did have a hard time setting it low enough for the pin to engage without using the weight of the trailer to push down on the Curt

Etrailer Expert

Brooke M.

11/11/2022

Many times the hitch head is adjustable. You may be able to adjust the height there, and also the king pin is commonly adjustable as well.

Juan

11/9/2023

It was been working great. One installed I haven’t had to remove it.



by:

Hole didn't line up.
I had to fill out
to allow release/lock pin to engage in hole.



by:

I cannot not say enough about trailer. Always have had my back with price,knowledge, and the best customer service.
I have the Curt X5 Adapter and love it.
I have it coupled to the Q24 her hitch
My tow vehicle is a 2013 GMC 3500 Dually 4WD and tow a 40' 18k 2012 Keystone Raptor



by:

This is just what I was looking for, already had Curt R5 slider hitch, put B&W hitch on new truck. Tried a gooseneck adapter, but too much flex. Went back to 5th wheel hitch. This adapter is built heavy, weighs over 100lbs by itself. I pull a 14,000lb toy hauler, with a F250 shortbed, needed the slider. I feel much safer with this product. Ordered from e.trailer, shipping was right on, only 3 days.



by:

Managed to get my hands on a curt E16 5th wheel hitch and couldn’t be happier with the combination. The drop in weighs 100lbs and is honestly really easy to install. The hardest part is getting it from where it’s stored to the back of the truck.



by:

The only issue was the outer cross braces of this base interfere with the B&W 16K Patriot 5th wheel hitch. I had to grind off about a 1/2" by 1" triangle on the lower Patriot bracket (each side) so it could sit flush on this base where the pins could be attached. Otherwise, I really like the simplicity of this design.



by:

Definitely does the job if you already have the goose neck and need the 5th wheel rails.



by:

Received product 4 days after ordering with free shipping. Seems really well made. No noises or clunks when towing. It dropped right in to my b&w gooseneck and my Reese 5th wheel dropped directly into it. Good product.



by:

This was super easy to install, and recently when we were pulling an 9,000 lbs 5th wheel, it performed flawlessly. well worth the money, and with the added bonus of keeping our Goose-neck hitch for our Hay trailer.



by:

Really impressed with the quality of the Curt product. Worked out great, fitting my new to me 98 Dodge 3500. Thanks etrailer.



by:

Very polite and helped with order to get the correct fifthwheel plate to fit my truck, and made every step easy for purchase, very pleased it fit exactly as describe, I can appreciate everything very much .
Thank you
Rodney Bergman



by:

Fits right in. Just what I needed to use the hitch I already owned wit my B &W gooseneck. Awesome price also.



by:

Good quality products, customer service was great they helped me exchange and get the correct adapter after I ordered the wrong one



by:

I love this hitch adapter. I mostly pull gooseneck trailer, but occasionally I need to pull a fifth wheel. Easy to get in and I haven't had any problems getting it back out when I was done with it.



by:

I recently purchased a used '08 Ford F-350 with a B&S turnover gooseneck hitch. I wanted to use a Reese 16k hitch that I already own and put it in this truck without doing the typical bed rails to attach the fifth wheel hitch. I contacted Etrailer and they quickly identified the Curt X5 adapter to solve my issue. Ordered new adapter and in 3 days I had the unit and everything fit perfectly. This is the second time I have dealt with Etrailer in the last 6 months and I continue to be impressed with all aspects of this company. I'm glad I found Etrailer 6 months ago when I was looking for trailer hub and brake parts. I knew just who to turn to with my latest needs. Thanks Etrailer!

Joe S.

7/3/2016

Great. Works well to allow me to go from goose neck to fifth and back again with ease. Very satisfied!



by:

Customer service was great and my item was delivered fast. I would recommend etrailer



by:

Items arrived intact in original packaging, hitch components are well built for heavy duty applications also arrived ahead of the projected date. UPS gave regular updates of travel location and delivery date.

Tim

11/2/2022

Heavy duty, tight fit, no rattle. Thanks



by:

I would recommend this product to everybody, excellent price and it only to me and my son five minute to install.



by:

Ordered Curt X5 Fifth Wheel Adapter for my B&W Square Shank Turnover Ball Hitch and received it in two days. Had it installed in my trucks in a matter of minutes. Just pulled out the ball and inserted the adapter, no holes to drill in my truck bed and simply unpin it and remove it to have full use of my bed. Love it!

Wayne H.

5/30/2016

It is great! Just got back from a 4800 mile trip and unhooked my fifth wheel and pulled the pin and removed everything from my truck bed. The only way to go!



by:

Great product! Fit right in and ready to go in just a few minutes. Can't be happier....


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Show More Reviews

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

  • Adapter to Tow a 5th Wheel Trailer with a B and W Square Shank Turnover Ball Trailer Hitch
    B and W does have a square shank turnover ball gooseneck hitch with the ball that pins in at one spot on the ball shank. If you determine that is what you have then the Curt X5 adapter, # 16310, would be correct and it is compatible with a Reese slider 5th wheel trailer hitch. However. it would be less expensive to replace the gooseneck hitch with a 5th wheel installation kit (provided you do not use the gooseneck hitch). This is also safer because there are less components chained together...
    view full answer...
  • Does Curt 5X Adapter work with Valley Slider Hitches
    Yes, I did some checking and the Curt X5 Fifth Wheel Adapter for B and W Square Shank Turnover Ball Hitches # 16310 would work in the B and W hitch you have installed in your 2004 Ford F250 and is also compatible with the Valley Power Pull Glider hitch as this hitch is designed to fit industry standard rails like what are on the # 16310. You can use a slider hitch with this adapter. I attached a review video for you to check out as well.
    view full answer...
  • Will the Curt X5 Gooseneck to 5th Wheel Adapter Clear the Safety Chains Loops on a B and W Hitch
    Safety chain loops are normally located to the left and right of the gooseneck ball. The X-shaped part in the center of the Curt X5 adapter, # 16310, is raised above the truck bed by almost 1-1/2 inches, more at the center where the adapter fits into the ball cavity. It should not interfere with the safety chain loops, especially if they are the type that are on springs and other wise sit fairly low to the bed when not in use.
    view full answer...
  • Can The Curt X5 Base Rail Adapter Be Used With A MORryde Cushioned Pin Box
    Yes, there would not be any issues using the Curt X5 5th Wheel Base Rails Adapter for B&W Turnoverball Gooseneck Trailer Hitches # 16310 to mount your fifth wheel hitch and then hooking up to a trailer with a MORryde Cushioned Pin Box.
    view full answer...
  • Will Curt X5 fifth Wheel Adapter For B&W Work With Airsafe 25K Fifth Wheel Hitch
    I looked up the Airsafe 25K 5th Wheel Hitch and noticed that it uses industry standard above bed rails. Since this is the case, the Curt X5 Fifth Wheel Adapter for B&W Square Shank Turnoverball Hitches # 16310 will work great for you. The adapter # 16310 will fit into your B&W Turnoverball gooseneck and provide industry standard above bed rails to install your fifth wheel trailer. I have attached a review video of the adapter for you.
    view full answer...
  • Will Trailer Side to Side Movement Raise the Rails on the CURT X5 Adapter and Damage the Truck Bed
    It is unlikely that the movement of the 5th wheel trailer would be able to move the rails to such a degree as to damage the truck bed. The rails on the CURT X5 Fifth Wheel Adapter, # 16310, are not like regular rails. They have extra steel on the bottoms to create more surface area contact. This spreads the weight and pressure to a larger area. Combine that with the downward weight of the hitch and trailer and the fact that the adapter is pinned, and it is very improbable there will be...
    view full answer...
  • Solution for Curt X5 Adapter that Doesn't Want to Fully Seat with Spray In Bed Liner
    Your spray in bed liner would not be the issue in most cases but we do have a solution that we have found works in your situation. We had a customer come back and state that the first time he went to use the # 16310 on his truck with a spray in bed liner he had the same issue with the pin not seating. He went ahead and hitched up the trailer and that pressure was enough to get the pin to seat fully. After that he never had that problem again. Most likely the bed liner just need to compress...
    view full answer...
    Image 1 for
  • Dimensions of the Mounting Holes on the Curt X5 Gooseneck-to-5th-Wheel Adapter Plate
    The Curt X5 Gooseneck-to-5th-Wheel Adapter Plate, part # 16310, has three sets of mounting slots for fifth wheel hitches. The slots are the same dimensions as the mounting slots on the industry standard base rails. I have attached a diagram that shows their dimensions. The Curt adapter plate works with Reese 15K, 16K, and 18K fifth wheel hitch. I spoke with my contact at Reese and he said the 14K should also work, because the Reese 14K hitch became the Reese 15K hitch. I am including a...
    view full answer...
    Image 1 for
  • Adapter Kit Recommendation for Fitting Reese 16k Hitch in Truck Bed with B and W Gooseneck
    We have exactly what you need. The Curt X5 adapter part # 16310 is designed to fit your B and W gooseneck hitch and provide you with a set of fifth wheel rails that your Reese 16k fifth wheel hitch is designed to fit. With just this adapter you'd be set. I attached a review video for this for you to check out as well.
    view full answer...
  • Should A Curt X5 Base Rail Adapter Spin In A B&W Gooseneck Hitch
    It sounds like the locking pin might not fully be engaging your Curt X5 # 16310 and allowing it to turn up to the point that the squared edge of the post won't let it turn any more in the hitch. Do you possibly have a bed liner that could be holding the X5 up higher so that the bolt doesn't line up? Can you lift the X5 up out of the hitch after pushing the locking pin back in? Let me know what you find and we can keep troubleshooting further.
    view full answer...
  • Distance From Center of Curt X5 Fifth Wheel Adapter 16310 To Edge of Rail
    The shaft that fits in the gooseneck hitch on the Curt X5 adapter, # 16310, is centered between the two 5th wheel rails. If you were to measure from the center of that shaft to the rear edge of the back rail or to the front edge of the front rail it would be approximately 14 inches. You obviously have a truck bed that is shorter than 6 feet. Most likely there isn't going to be a fifth wheel hitch that's going to give you the needed clearance to make tight turns.
    view full answer...
    Image 1 for
  • Can a Pullrite 5th Wheel Trailer hitch be Installed in Valley Rails
    If the Pullrite 5th wheel trailer hitch you have fits industry standard above the bed rails with the measurements shown in the picture I have provided then you can use it in the Valley rails (provided they are the above the bed rails). If the Pullrite hitch is the SuperGlide then you will have to have a special installation kit from Pullrite. We do not currently offer Pullrite products but they are readily available.
    view full answer...
    Image 1 for
  • Curt X5 Fifth Wheel Adapter Used to Install Reese 5th Wheel Hitch in Truck with B&W Gooseneck Hitch
    The Curt X5 Fifth Wheel Adapter, # 16310, provides industry standard rails to install a fifth wheel hitch in a truck equipped with a B&W square shank turnover ball gooseneck hitch. As long as your Reese hitch uses the industry standard above bed rails, the Curt X5 Fifth Wheel Adapter, # 16310, will work for you.
    view full answer...
  • Can Curt X5 Fifth Wheel Rail Kit Adapter be Used with Spray in Bed Liner
    We've had customers report back that spray in bedliners did not prevent the use of the Curt rail kit adapter part # 16310 that you referenced from installing. One did say that they had to put the pin weight of their trailer on their hitch to get the pin of the adapter to seat but that only was required the first time they used the setup.
    view full answer...
  • Will Curt X5 Hitch Adapter for B&W Turnover Balls Accept Pro Series 5th Wheel Hitch
    The Curt X5 Fifth Wheel Adapter # 16310 for B&W Square Shank Turnover Ball Hitches will work fine in a B&W standard center turnover ball hitch. Once installed it will provide a 20K capacity and industry-standard 5th wheel base rails that are compatible with 5th wheel hitches from makers like Curt, Draw-Tite, Hidden Hitch, Reese, Valley and Husky. It will work fine with your Pro Series hitch.
    view full answer...
  • Standard Fifth Wheel Rail Kit Adapter for 2015 Ford F-250 with B and W Turnoverball Gooseneck
    Curt has their X5 adapter part # 16310 that fits into the B and W Turnoverball gooseneck hitches like what your truck has currently. This will give you a standard fifth wheel rail kit to attach a hitch to.
    view full answer...
  • Will the Curt X5 Fit a Pro Series 5th Wheel Trailer Hitch and Fit Over a Bed Mat
    Curt states that bed mats can affect the fit of the X5 # 16310. Basically if the Curt X5 can be pinned in like normal then it can be used with a bed mat. If it cannot then you would need to trim the mat in the shape of the X5 in order to get it to pin in and lock properly. Because every truck and bed mat combination is going to be slightly different there is no set list of vehicles and mat combinations available to determine if it will fit or not. The pin hole center for the X5 is approximately...
    view full answer...
  • Will Curt X5 Adapter Plates Allow a Reese Fifth Wheel to Be used on a B&W Turnover Gooseneck
    Yes, the Curt X5 Fifth Wheel Adapter for B&W Square Shank Turnover, will allow you to use your Reese 15K Fifth Wheel hitch. The Curt Adapter works with Curt 16K and 20K hitches as well as Reese Fifth Wheels up to 20k among other manufacturers.
    view full answer...
  • Can the Curt X5 Adapter be Used with a Pullrite Superglide 5th Wheel Trailer Hitch
    The Curt X5 Fifth Wheel Adapter for B and W Square Shank Turnover Ball Hitches, # 16310, is designed for use with B and W square shank turnover ball hitches. We spoke with Curt and they stated the Pullrite 5th wheel hitch is not compatible with the X5. The reason is because the rails that are required for use with the Pullrite 18k Hitch are of a completely design than what comes on this # 16310. The rails on the pull rite are more of a male connector style while the hitch is female. Whereas,...
    view full answer...
  • Will an RBW Lil' Rocker Fit the Curt X5 5th Wheel to Gooseneck Adapter
    The RBW rail purportedly fits in industry standard above the bed rails. The Curt X5 adapter # 16310 has the same hitch mounting slot spacing as industry standard rails so the hitch will fit. This X5 adapter is designed to fit a B&W Turnover Ball gooseneck hitch. If you have a different brand hitch let me know what it is and we can explore other options.
    view full answer...
  • Curt 20k with slider and Gooseneck-to-5th-Wheel Adapter Plate - B&W Turnover Ball
    I spoke with my contact at Valley and the Valley Gooseneck-to-Fifth-Wheel Adapter Plate, # V70881, will not work with the Curt slider rails. Instead, I would recommend using the Curt X5 Adapter Plate, # 16310. This adapter plate will work with your Curt fifth wheel hitch and slider rails and has a maximum weight capacity of 20,000 lbs. This adapter plate will work with the B and W square shank turnover ball hitch and retails at a lower price than the Valley adapter plate # V70881.
    view full answer...
  • Will a PullRite SuperGlide 5th Wheel Trailer Hitch Fit the Curt X5 Adapter
    Curt X5 Fifth Wheel Adapter for B&W gooseneck hitches # 16310 accepts 5th wheel trailer hitches that fit in above the bed industry standard rails (excluding Husky 10-26K or 10-16K sliders). If your SuperGlide is the ISR model (Industry Standard Rails) then it should fit the adapter. But Curt has not tested the adapter with the SuperGlide ISR models so they cannot officially confirm it.
    view full answer...
  • Is Curt X5 Adapter Compatible with Reese Sliding Fifth Wheel Hitch
    Curt X5 adapter, # 16310, is designed to fit B and W Square Shank Turnover Ball Hitches. This adapter is compatible with a Reese slider 5th wheel trailer hitch. I have linked you to the install details for the adapter, as well as an FAQ article on Fifth Wheel to Gooseneck adapters.
    view full answer...
  • Can the Curt X5 5th Wheel to Gooseneck Adapter be Used with a Sliding Pin Box
    You can use the Curt X5 adapter # 16310 with a sliding 5th wheel trailer hitch but the adapter has not been tested with a sliding pin box on a 5th wheel trailer. I spoke with my contact at Curt and he said that it would not be a problem so you can use it. I have included a link to a video review of this adapter for you. If you are talking about a Sidewinder or Reese Revolution pin box you cannot use any adapters with either of those pin boxes. It creates too much stress on the adapter...
    view full answer...


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