Demco 21K UMS Fifth Wheel Hitch for 2020 GM Pickups with OEM Under-Bed Prep Package Demco
(Demco Part #: 8550050)
This is a custom fit product, please verify fit before ordering:
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Designed to fit GM 2500 HD and 3500 HD pickups with under-bed OEM prep package. Leaves truck box free of bed rails when fifth wheel is not in use. The double pivot head features polyurethane bumpers to help eliminate side to side movement when uncoupled, and cushioned pivot action when towing. Wrap around jaw with locking bar for smoother, safer and more secure ride. 5 year limited warranty.

  • See "Vehicle" tab for the complete list of vehicles this fifth wheel is designed to fit.
  • Hitch will work in all long truck bed applications, but may not work in all standard truck bed applications. Caution should always be exercised when using this or any hitch to ensure the driver is aware of the clearance between the truck and trailer when turning.


FitsGM 2500 & 3500 HD
GTW21,000 lbs.
Installation InstructionsCLICK HERE
Made In:USA


  • Wrap around jaw with locking bar for a smoother, safer and more secure ride
  • 21,000 lb towing capacity
  • Double Pivot Head with polyurethane bumpers helps eliminate side to side movement when uncoupled and cushion pivot action when coupled
  • 5 Year Limited Warranty


  • Head, center section and base

Not Included:

  • Under-bed mounting system
Installation Instructions CLICK HERE

Demco Products

For nearly 50 years Demco has used the phrase “Doing our Best to Provide You the Best” to describe our commitment to customers, suppliers, co-workers and management in our ongoing quest for excellence. Since the beginning Demco has pursued a dream to fill needs, provide solutions, and compete in an existing marketplace. But, with a new generation and a new economical environment come new challenges to fulfill new dreams. Our new vision is not only to enter and sustain, but to flourish in today’s new ever-changing global marketplace. With our continued focus on family, team, quality and customer service, we will STRIVE to fulfill this vision with a firm conviction that our effort spent today will continue to bring rewards in the future.

As a direct result of that conviction, Demco occupies a position of leadership in a specific segment of today’s global marketplace with a well defined line of quality products serving multiple needs world-wide. From Agriculture to Towing, from Brake manufacturing to Printing, Demco has earned its place with the right combination of skill and technology needed to produce the best products available without compromise. We enjoy long-term relationships with our clients and look forward to this continuum with our new clients.

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

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