PopUp 5th Wheel Goosneck to Kingpin Adapter with 4.5″ Square Tube • GN6

Product Details

Universal Straight Coupler with King Pin (GN6) by PopUp. Tube Size: 4-1/2″. Shape: Square. Lifetime warranty. This coupler self latches and releases remotely with a cable that can be conveniently located near the gooseneck trailer jack handle. The coupler ensures easy coupling and uncoupling with a few simple moves no need to climb into the truck bed.


  • For Trailers With 4-1/2 Inch ID Round Tube
  • Standard S.A.E. King-Pin With 10 Inch Round Bolster Plate Fitted To 18 Inch Long Square Or Round Tube
  • Durable Black Powder Coat Finish
  • Fits Standard Gooseneck Trailer Coupler Tubes
  • 1-1/8 Inch Holes Thru Both Sides
  • Limited Lifetime Warranty


8 in stock