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.
- Popup Industries Round Straight Coupler For Semi-Tractor.
- For trailers with 4€³ ID round tube
- Standard S.A.E. king-pin with 10€³ round bolster plate fitted to 18€³ long square or round tube.
- Durable Black powder coat finish.
- Fits standard gooseneck trailer coupler tubes.
- Rated at 30,000 lb
- 7/8€³ holes thru both sides
- We do our best to ship most items same or next day.
- For all products, free fast delivery of the UPS is already included in the price.
- Part measures 4€³ outside diameter. Make sure it will fit as many of the China made tubes are not all sized consistently and many are under sized.