Truck Hardware Gatorback AT4 Mud Flaps - Set - Requires FC001K Caps

Was: $697.00
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Part #: GCS29K-AT4
FC001K Finishing Caps (Required For Installation)
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Our Guarantee
  • Fits 2019-2024 GMC Sierra 1500 (excludes the AT4X & AT4X AEV Edition)
  • Officially licensed AT4 logo on 304 stainless steel plate
  • Includes (4)12" wide mud flaps (2 driver/2 pass), custom brackets and hardware
  • Front tire coverage - 10.5" below fender
  • Rear tire coverage - 9.5" below fender
  • Stainless steel upper bracket with 5/8" Offset
  • Heavy duty premium rubber flaps
  • Lifetime limited warranty

Gatorback Plate Finishes

Here are the different plate finishines

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This AT4 logo Gatorback Offset Mud Flap set for the GMC Sierra 1500 is designed to fit perfectly. The flaps are 12" of heavy duty rubber and are attached to a custom fit bracket. The brackets are made from 304 stainless steel that gives them the durability you need. The brackets will not rust or corode and have the holes that line up with the factory fasteners already in them for a quick, simple install. The heavy duty rubber ensures that there will not be any debris that gets passed these flaps. These install inside the wheel well and have a 5/8" offset for extra tire clearance and come with all the hardware needed. When you remove the factory mud guard there will be a small hole in the fender that the fender plugs will cover. That is why the color of your truck is needed.

The Truck Hardware Gatorback series mud flaps are the industries highest quality heavy duty mud guards! The rugged design and quality finish of these mud flaps make the perfect compliment to your truck. Featuring a 1/2" thick rubber flap, these mud flaps are sure to impress while they protect your investment.

The AT4 logo is officially licensed ensuring it looks perfect and is die stamped into the stainless steel plate with a hand applied vinyl overlay. The stainless plate measures 10 1/4" x 5" on the front and rear . You will appreciate the attention to detail in these flaps.

Installation is made simple featuring no body drilling to install using factory exisiting screws. Installation takes about 15 mins per flap and you can use tools you have at home. The Gatorbacks install the inside of the wheel well and feature a 5/8" Offset so they work with step bars, power boards or side steps. The mudflaps also feature a lifetime warranty on the rubber portion of the flap. 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.

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.

Other helpful topics related to the gatorback mud flaps

BrandGatorback by Truck Hardware
Length23 inch(es)
Width12 inch(es)
Height.5 inch(es)
Weight18 lb(s)

  • 2024 GMC Sierra 1500
  • 2023 GMC Sierra 1500
  • 2022 GMC Sierra 1500
  • 2021 GMC Sierra 1500
  • 2020 GMC Sierra 1500
  • 2019 GMC Sierra 1500
WARNING: Some products may contain chemicals such as DEHP, which can cause cancer, birth defects or other reproductive harm. For more info go to
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