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Which 5th Wheel Base Rail Installation Kit for 2021 GMC Sierra 2500 with 6-3/4 Foot Bed


Will this bracket system fit my 2021 GMC 2500 Crew Cab Denali?


Expert Reply:

I have a solution for you, but the # RP50066 is not the correct bracket kit for your 2021 GMC Sierra 2500 Denali. Instead you'll need to use the Reese Quick-Install Custom Outboard Brackets for 5th Wheel Trailer Hitches # RP57FR, which are actually going to be easier to install because they're outboard mounting brackets so it's a great solution. If you need the base rails as well, you'll want the # RP84FR.

I've linked a review and installation video of these for you to check out.

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