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.

Easily transition from fifth-wheel towing to gooseneck towing with this heavy-duty hitch. Includes 2-5/16" ball with 3" offset from front to rear. Mounts to standard, above-bed fifth-wheel rails (sold separately).

This shock-absorbing pin box works with your truck's gooseneck hitch to provide a smooth ride while you tow your fifth-wheel trailer. The all-in-1 box is virtually maintenance-free - no air bags to refill or small parts to replace.

King pin coupler allows you to pull your gooseneck trailer with a fifth-wheel hitch. The height easily adjusts to fit your application. Square inner 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 tube is included.

Install this adapter in the 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.

This shock-absorbing pin box works with your gooseneck hitch to give a smooth ride while you tow your fifth-wheel trailer. The all-in-1 box has no air bags to refill or small parts to replace. Auto-latch allows for easy hookup.

This shock-absorbing pin box works with your gooseneck hitch to give a smooth ride while you tow your fifth-wheel trailer. The all-in-1 box has no air bags to refill or small parts to replace. Auto-latch allows for easy hookup.

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.

Adapt your Curt EZr Double Lock gooseneck hitch to work with a fifth-wheel trailer hitch to meet your towing needs. Adapter plate attaches to gooseneck and provides rails that let you mount almost any fifth-wheel hitch.

Tow your fifth-wheel trailer with your gooseneck hitch and get the smooth, stable ride that only an air-ride-equipped coupler can deliver. This trailer coupler adapter has a built-in air bag that provides cushion and absorbs road shock.

This shock-absorbing pin box works with your truck's gooseneck hitch to provide a smooth ride while you tow your fifth-wheel trailer. The all-in-1 box is virtually maintenance-free - no air bags to refill or small parts to replace.

Convert your Draw-Tite, Bulldog or B&W gooseneck hitch to a fifth-wheel hitch with this kit. Adapter has round and square gooseneck posts, a 4-way pivoting head for easy trailer hookup, and stabilizer strips for sturdy mounting in your truck bed.

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.

This shock-absorbing pin box provides a smooth, safe ride while you tow your fifth-wheel trailer. The all-in-1 box is virtually maintenance-free - no air bags to refill or small parts to replace. The weight scale lets you monitor your vertical load.

King pin coupler allows you to pull your gooseneck trailer with a fifth-wheel hitch. The height easily adjusts to fit your application. Square inner and outer tubes replace the gooseneck coupler on your trailer. Load-bearing pin included.

King pin coupler allows you to pull your gooseneck trailer with a fifth-wheel hitch. The height easily adjusts to fit your application. Square inner and outer tubes replace the gooseneck coupler on your trailer. Load-bearing pin included.

Pull your gooseneck trailer with a fifth-wheel hitch by installing this round king pin adapter. Simply replace both the inner and outer tubes of the gooseneck with this unique coupler and you're ready to tow.

Mount this gooseneck trailer hitch in your Demco Hijacker Premier Series base rails so that you can pull a gooseneck trailer. Will also work with standard, above-bed base rails from other manufacturers. 2-5/16" Ball included.

Quickly and easily convert your recessed gooseneck hitch to a sturdy 5th-wheel trailer hitch. 2 Lightweight pieces for fast installation. Wraparound jaw has a locking bar for added security. Pivoting head allows easy hookup and helps limit chucking.

Mount this gooseneck trailer hitch in your Demco Hijacker UMS Series base rails so that you can pull a gooseneck trailer. 2-5/16" Ball included.

Mount this gooseneck trailer hitch in your Demco Hijacker SL Series fifth-wheel base rails so that you can pull a gooseneck trailer. 2-5/16" Ball and safety chain loops included.

King pin coupler allows you to pull your gooseneck trailer with a fifth-wheel hitch. The height easily adjusts to fit your application. Square inner tube is included.

Insert this ball adapter into the hitch hole of your B&W Turnoverball underbed gooseneck hitch so that you can tow your trailer that has an inverted gooseneck hitch.