Does Reese Quick-Install Custom Outboard Kit With Base Rails Fit 2021 GMC Sierra 1500 Short Bed

Question:

Hi, I would like to purchase this but can you please tell me if this will fit my 2021 GMC Sterra 1500? 70 inch bed. Ihave a reese slider hitch.

asked by: Jeff B

Expert Reply:

I can absolutely confirm for you that the Reese Quick-Install Custom Outboard Installation Kit with Base Rails for 5th Wheel Trailer Hitches # RP56015-53 is a fit for your 2021 GMC Sierra 1500 with a 70 inch bed (which we call the 5-3/4' bed), and it also fits the 6-1/2 foot bed.

I have added a link below to a video review for you to check out as well of the Reese Quick-Install Custom Outboard Installation Kit with Base Rails for 5th Wheel Trailer Hitches # RP56015-53.

Also, I wanted to mention that if you didn't have a 5th wheel wiring harness for your 2021 Sierra, the correct part is the 5th Wheel/Gooseneck Wiring Harness # A10-7007.

expert reply by: Kyle S