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Does Demco Hijacker Autoslide Fit Demco Rail Adapter For 2021 GMC Sierra 3500 Puck System

Question:

demco highjacker autoglide fitting this adapter. I have a 2021 GMC Sierra 3500 6 foot bed. I have bought and returned several oem rail adapters because they aren’t wide enough I was wondering will this work? The actual width of the hitch that sit into the holes is 30.5 will this work

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Expert Reply:

It sounds like you are asking if the Demco adapter fits the puck system of your 2021 GMC Sierra 3500 and if the adapter will allow you to mount a Demco Hijacker Autoslide 5th wheel hitch, and I'm happy to say that the answer to both of those questions is yes.

The adapter will fit directly in the puck system, and has the correct dimensions to mount either the 18,000 lb or 21,000 lb capacity Hijacker Autoslide. So you can use the adapter and Autoslide:

- Demco 5th Wheel Rail Adapter for Chevy/GMC OEM 5th Wheel Towing Prep Package # DM6333

- 21,000 lb Capacity: Demco Hijacker Autoslide 5th Wheel Trailer Hitch # DM8550035

- 18,000 lb Capacity: Demco Hijacker Autoslide 5th Wheel Trailer Hitch # DM8550034

I have added a link below to a video review for you to check out as well which shows the Demco adapter and Hijacker Autoslide 5th wheel hitch being installed and used in 2021 GMC Sierra 3500.

expert reply by:
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Kyle S

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