Please EMAIL us and you will usually have a response in minutes, to hours depending on the time of day it was received.  Email is the best way to cut out telemarketers all together, we apologize for any inconvenience this may cause.   ALL EMAIL submissions go directly to the cell phones of our towing products staff. This is the quickest way to hear back from us, or if you have technical questions feel free to contact the PopUp Towing Factory staff on details of their products.  

SB3-6 6"offset, 4" square tube

Price: $430.00


Fits trailers with 4″ ID square tube

Part measures 4″ outside dimension. Make sure it will fit as many of the China made tubes are not all sized consistently and many are under sized.  PopUp will assume no responsibility for returns when incorrect measurements are taken. Please see return policy.

This coupler latches when the trailer is lowered onto the ball. It also has a molded hitching guide to make coupling easier. To uncouple, you simply pull a release cable located near the trailer jack handle. The GN8 coupler has a rating of 28,000 pounds. Video shown is the SB1 9″ offset coupler, install procedure is similar.

These units are fabricated using extra heavy wall tubing for maximum strength. They are rated at 24,000 pounds gross trailer weight. Short Bed Extended Couplers come with all necessary hardware and coupler release cable. Installation takes about half an hour.


  • Fits trailers with a 4" ID Square tube
  • 24,000 lb Gross Trailer Weight
  • Self-Latching GN8 2-5/16" coupler
  • 6" offset between truck and trailer
  • 1" holes through both sides
  • Includes easy release cable and hardware