B&W Turnoverball King Pin Adapter For Inverted 5th Wheel Trailers B&W
(B&W Part #: BW-4000)

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Designed to easily insert this king pin into your existing B&W brand under bed gooseneck system so you can tow a inverted 5th wheel trailer.

  • Per the manufacturer: This item is not recommended to exceed the tow vehicles recommended towing capacity.


FitsB&W Brand Gooseneck Systems
FinishGunmetal Grey Powder Coat


  • 2" King Pin Diameter - 8" diameter plate
  • 7,500 LBS Vertical Load Limitation

B & W Trailer Hitches

B&W's concept of "A hitch when you need it, a level bed when you don't" has been the basis for the B&W Turnover Ball Gooseneck Hitch since 1988. The patented Turnover Ball offers you the versatility you need when you need it.

They offer a Turnover Ball Hitch to fit nearly every domestic full-sized pickup on the market.

The above information has been provided by the Manufacturer, and we cannot guarantee the accuracy thereof or endorse the opinions expressed.