Gooseneck Couplers

• Allows gooseneck trailer to be towed with vehicles equipped with a fifth wheel hitch
• Feature dual set bolts
• Round model features exclusive load bearing pin
• Square model features load bearing pinch bolt
• Available with or without outer tube

Convert your Gooseneck to a fifth wheel King Pin

Pull your gooseneck trailer with a semi-tractor or pickup mounted fifth wheel.

Simply replace the coupler with a king pin. Easily switch back and forth.

2″ SAE king pins are the industry standard and are suitable for use in all over-the-road applications.

Convert your Gooseneck to a fifth wheel King Pin

Pull your gooseneck trailer with a semi-tractor or pickup mounted fifth wheel.

Simply replace the coupler with a king pin. Easily switch back and forth.

2″ SAE king pins are the industry standard and are suitable for use in all over-the-road applications.

Convert your Gooseneck to a fifth wheel King Pin

Pull your gooseneck trailer with a semi-tractor or pickup mounted fifth wheel.

Simply replace the coupler with a king pin. Easily switch back and forth.

2″ SAE king pins are the industry standard and are suitable for use in all over-the-road applications.

Replace your trailer”s coupler with this self-latching coupler and never crawl into the bed of your truck to latch or unlatch the coupler agin. Our patented self-latching coupler fist 2 5/16″ gooseneck balls.

Replace your trailer”s coupler with this self-latching coupler and never crawl into the bed of your truck to latch or unlatch the coupler agin. Our patented self-latching coupler fist 2 5/16″ gooseneck balls.

• Allows gooseneck trailer to be towed with vehicles equipped with a fifth wheel hitch
• Feature dual set bolts
• Square model features load bearing pinch bolt

Replace your trailer”s coupler with this self-latching coupler and never crawl into the bed of your truck to latch or unlatch the coupler agin. Our patented self-latching coupler fist 2 5/16″ gooseneck balls.

With the Defender gooseneck coupler from B&W, you get the best of both worlds. Not only does this coupler make hookup an absolute snap, but it also defends against trailer theft. The built-in lock can be engaged when your trailer is hooked up to your truck, thus preventing uncoupling. It can also be locked when your trailer is not hooked up, preventing would-be thieves from hooking your trailer up to their gooseneck ball.

Convert your Gooseneck to a fifth wheel King Pin with an Offset

Pull your gooseneck trailer with a semi-tractor or pickup mounted fifth wheel.

Simply replace the coupler with a king pin. Easily switch back and forth.

2″ SAE king pins are the industry standard and are suitable for use in all over-the-road applications.

Convert your Gooseneck to a fifth wheel King Pin

Pull your gooseneck trailer with a semi-tractor or pickup mounted fifth wheel.

Simply replace the coupler with a king pin. Easily switch back and forth.

2″ SAE king pins are the industry standard and are suitable for use in all over-the-road applications.

Convert your Gooseneck to a fifth wheel King Pin w/ 9" Offset

Pull your gooseneck trailer with a semi-tractor or pickup mounted fifth wheel.

Simply replace the coupler with a king pin. Easily switch back and forth.

2″ SAE king pins are the industry standard and are suitable for use in all over-the-road applications.

B&W Defender Locking Gooseneck Coupler Inner and Outer Tube is a Heavy-duty gooseneck coupler latches and locks automatically. Built-in lock can be engaged when trailer is coupled and when trailer is unattached to help prevent towaway theft. Oversize, cone-shaped funnel eases hookup.

If you love driving a short-bed truck, but don't want your trailer to bump into your back glass, you might need one of these.  This sleek inner tube attaches to your gooseneck trailer to give you extra clearance.  Its easy-to-grip, spring-loaded handle also eases hookup.

For flat bed trucks with recessed ball

Fits trailers with 4-1/2″ ID Sqaure tube

Our Part measures 4-1/2″ outside to outside and is manufactured with USA steel.  Make sure it fits your trailer downtube.  Some manufacturers use Import tubes, and many are Not sized consistently or are out of round or square.  PopUp assumes No responsibility for returns when incorrect measurements are taken. Please see return policy.

For flat bed trucks with recessed ball

Fits trailers with 4″ ID round tube

Our Part measures 4″ outside to outside and is manufactured with USA steel.  Make sure it fits your trailer downtube.  Some manufacturers use Import tubes, and many are Not sized consistently or are out of round or square.  PopUp assumes No responsibility for returns when incorrect measurements are taken. Please see return policy.

For flat bed trucks with recessed ball

Fits trailers with 4″ ID Sqaure tube

Our Part measures 4″ outside to outside and is manufactured with USA steel.  Make sure it fits your trailer downtube.  Some manufacturers use Import tubes, and many are Not sized consistently or are out of round or square.  PopUp assumes No responsibility for returns when incorrect measurements are taken. Please see return policy.

Pop Up Towing’s cushion ride technology has been tested at Wichita State University to improve the ride quality up to 59.01%.  You can feel the difference! Note: Keeping the cushion protected from the elements such as sunlight will help extend the life of the rubber cushion.

• Designed to replace Lippert 1621 and 0719 5th-wheel pin boxes
• Replaces your traditional 5th wheel Pin Box setup with a gooseneck connection
• Safety Chains Sold Separately 
• Replaces your traditional 5th wheel setup with a gooseneck connection
• Up to 24,000 lb. capacity 6,500 lb. max pin weigh
• Purchase verification required. Refer to instruction sheet for pin weight measuring process

• Designed to replace Young Frame 5th-wheel pin boxes width 12"
• Replaces your traditional 5th wheel Pin Box setup with a gooseneck connection
• Safety Chains Sold Separately 
• Replaces your traditional 5th wheel setup with a gooseneck connection
• Up to 24,000 lb. capacity 6,500 lb. max pin weigh
• Purchase verification required. Refer to instruction sheet for pin weight measuring process

• Designed to replace Lippert 1716,1116,0115
• Designed to replace Fabex 560,530,520,503,500
• Replaces your traditional 5th wheel Pin Box setup with a gooseneck connection
• Safety Chains Sold Separately 
• Replaces your traditional 5th wheel setup with a gooseneck connection
• Up to 24,000 lb. capacity 6,500 lb. max pin weigh
• Purchase verification required. Refer to instruction sheet for pin weight measuring process

• Designed to replace Dexter 221-0023-00
• Designed to replace Leland 7920, 7910, 7900
• Replaces your traditional 5th wheel Pin Box setup with a gooseneck connection
• Safety Chains Sold Separately 
• Replaces your traditional 5th wheel setup with a gooseneck connection
• Up to 24,000 lb. capacity 6,500 lb. max pin weigh
• Purchase verification required. Refer to instruction sheet for pin weight measuring process

• Designed to replace Fabex 300, 314 ,316, 330
• Designed to replace Lippert 0516
• Replaces your traditional 5th wheel Pin Box setup with a gooseneck connection
• Safety Chains Sold Separately 
• Replaces your traditional 5th wheel setup with a gooseneck connection
• Up to 24,000 lb. capacity 6,500 lb. max pin weigh
• Purchase verification required. Refer to instruction sheet for pin weight measuring process

• Designed to replace Dexter 221-0031
• Designed to replace Venture CJ13515,CJ13517
• Replaces your traditional 5th wheel Pin Box setup with a gooseneck connection
• Safety Chains Sold Separately 
• Replaces your traditional 5th wheel setup with a gooseneck connection
• Up to 24,000 lb. capacity 6,500 lb. max pin weigh
• Purchase verification required. Refer to instruction sheet for pin weight measuring process

• Designed to replace Fabex 665,663,660
• Replaces your traditional 5th wheel Pin Box setup with a gooseneck connection
• Safety Chains Sold Separately 
• Replaces your traditional 5th wheel setup with a gooseneck connection
• Up to 24,000 lb. capacity 6,500 lb. max pin weigh
• Purchase verification required. Refer to instruction sheet for pin weight measuring process

• Designed to replace Fabex 765,770,730 RBW 7019
• Replaces your traditional 5th wheel Pin Box setup with a gooseneck connection
• Safety Chains Sold Separately 
• Replaces your traditional 5th wheel setup with a gooseneck connection
• Up to 24,000 lb. capacity 6,500 lb. max pin weigh
• Purchase verification required. Refer to instruction sheet for pin weight measuring process