Truck Hardware Gatorback Denali Dually Mud Flaps & Caps - Set

  • Picture of Truck Hardware Gatorback Denali Dually Mud Flaps & Caps - Set
Part #: GCR200F-D~GCR204R-D
Fargo - Chat Or Call For Availability
Sioux Falls - In Stock
  • Fits 2020-2024 GMC Sierra 3500 HD (Dually Rear Wheel)
  • Does not fit the 2024 AT4X
  • Inner wheel well liner requires modification
  • Remove OEM protector or factory mud guard for install
  • Front mud flaps are removable from the finishing cap
  • Officially licensed Denali logo on stainless steel plate
  • Front - 8.75" of tire coverage from bottom of the fender to bottom of the flap
  • Rear - 13.25" of tire coverage from bottom of the fender to bottom of the flap
  • Includes 2 front mud flaps, finishing caps and hardware (1 driver/1 passenger) (GCR200F-D)
  • Includes 2 rear mud flaps (1 driver/1 passenger), custom fit rear support brackets and hardware(GCR204R-D)
  • Heavy weight flap will not sail
  • Limited lifetime warranty
  • Gatorback mud flap length comparisons

The Truck Hardware Gatorback Black 21”x24” Dually Mud Flaps are designed to fit great on dually GMC Sierra 3500 trucks. The flaps offer 21" of heavy duty rubber and weigh in at 10 lbs each. This weight will ensure that they do not sail when you are driving and they do their job. These mud flaps come with the custom fit brackets and the hardware needed to install the flaps. The heavy duty rubber ensures that there will not be any debris that gets passed these flaps.

The front plates are 10.25" x 5" and rear plates measure 17.25" x 5" plate. You will appreciate the attention to detail in these flaps. The flaps include a lifetime warranty on the rubber portion. If the flap comes off the truck or is damaged to due to normal wear and tear let us know and we will send you a replacement piece of rubber at no charge. 

Length measurement from bottom of the wheel protector to the bottom of the flap 8.75" on the front wheels and 13.25" on the rear wheels.

Manufacturer Warranty-

Gatorback mudflaps are backed by a Limited lifetime warranty. This warranty covers rubber replacement (ex- tear offs) for the lifetime of the product to the original owner. It does not cover damage caused by abuse, or regular wear and tear on brackets, plates, or mounting hardware.

BrandGatorback by Truck Hardware
Weight35 lb(s)

  • 2024 GMC Sierra 3500 HD
  • 2023 GMC Sierra 3500 HD
  • 2022 GMC Sierra 3500 HD
  • 2021 GMC Sierra 3500 HD
  • 2020 GMC Sierra 3500 HD
WARNING: Some products may contain chemicals such as DEHP, which can cause cancer, birth defects or other reproductive harm. For more info go to