Truck Hardware Gatorback Black Wrap AT4 Mud Flaps - Set of 4 - Fits 2019-2026 GMC Sierra 1500

Part #:
GCN29K-AT4W
Sale Price
$665.10
$739.00
Free Shipping
ON ORDER — Expected to Ship in 10-14 Days
FC001K Finishing Caps (Required For Installation)

Additional details

    ⚠️Requires FC001K finishing caps / Does NOT fit AT4X & AT4X AEV
  • Includes (4)12.5" wide mud flaps, custom brackets and hardware
  • Additional tire clearance for trucks with oversized tires
  • Removable heavy duty premium rubber flaps
  • Front tire coverage - 8.75" below fender
  • Rear tire coverage - 8.75" below fender
  • 1 year limited warranty

Front Flap Installation Video

Step By Step Install Instructions

Gatorback Plate Finishes

Here are the different plate finishes

Rear Flap Installation Video

Step By Step Install Instructions

At a glance

Overall sentiment is strongly positive: buyers consistently describe Gatorback/SharpTruck mud flaps as premium, heavy‑duty, great-looking, and highly effective at stopping rocks/mud/snow from hitting paint, steps, and trailers. The main reservations are the high price and occasional installation/fitment or hardware/packaging issues, which are often mitigated by responsive customer service and strong warranty support.

What Customers Liked

  • Thick, heavy rubber with substantial weight plates; feels “OTR/semi-truck grade,” doesn’t flap at highway speeds, flexible in cold weather, holds up through winters, gravel roads, mud, and years of use; many repeat buyers across multiple trucks.
  • Significantly reduces rock chips, road debris, mud/salt spray on paint, rocker panels, running boards/power steps, cameras, and keeps trailers/5th wheels/RVs cleaner and protected; coverage often better than OEM or plastic splash guards.
  • Looks “sharp,” classy, and truck-specific; logo/plate options (Z71, AT4X, Ford, Ram, Duramax, flags, black/satin/gunmetal/chrome) get compliments and help the truck stand out; finishing caps appreciated.
  • Many report perfect/vehicle-specific fit with factory-hole mounting, adjustable in/out positioning, good clearance with stock tires, and compatibility with certain trims/fender flares when configured correctly.
  • Generally described as straightforward with the right tools; helpful YouTube videos; bracket kits (especially rear/dually) add stability and make alignment easier; ability to install without removing wheels on some vehicles.
  • Frequent praise for fast shipping, responsive support, quick exchanges for wrong parts, replacement parts/plates/flaps shipped rapidly, and hassle-free warranty (including tears/rips or shipping damage).
  • Replaceable plates; removable lower section on some models for off-road clearance; ability to adjust flap stick-out; some like drilling only into plastic liner (not body).

Things to Consider

  • Most common complaint; many call them expensive/overpriced (often $600–$1000+), sometimes compounded by needing separate bracket kits/plates; some say alternatives may be “good enough” for less.
  • Mixed experiences: some installs are quick, others take hours—especially rear/dually, with wheel-well liners, rock rails/steps, or limited access; right-angle drill and/or removing rear wheels often recommended; alignment can be finicky.
  • Paper instructions sometimes vague, lacking steps, inconsistent with videos, or confusing (hardware ID, left/right orientation, templates, washer placement); requests for better labeling, templates, and model-specific videos.
  • Occasional reports of holes not lining up, needing to drill/elongate slots, bend/trim brackets, trim liners/trim pieces, or create homemade brackets; some rubbing with oversized tires/offset wheels; a few cases of poor fit on specific trims/years.
  • Multiple reviewers note drilling is still required (usually into plastic liner or flap), so ‘no-drill’ feels misleading in some kits.
  • Some dislike plastic clips/nut inserts pulling out/stripping, mixed metric/SAE hardware, bolt length issues, flimsy/galvanized or plastic brackets at high price, silver hardware visible (wish black), occasional missing/mismatched hardware or parts.
  • Some flaps/plates arrived scuffed/scratched or boxes damaged; brackets loosening in transit; a few wrong items shipped or missing pieces (spacers/washers/clips), though support often resolves quickly.
  • Some note low ground clearance depending on model/height; concerns about snagging in deep snow, tall grass, or off-road obstacles; some wish flaps were longer/shorter depending on use.
  • Plate finish can streak/stain (e.g., gunmetal), color/gloss differs from expectations, logos not level in a few cases, and some wish flaps came pre-slotted/pre-drilled for easier install.
AI-generated from the text of customer reviews
Excellent
5
This product is well engendered was very up front and easy to install didn't even have to remove the wheels and tires and they look great would recommend
Mudflaps
5
I love these mudflaps. They feel very heavy duty and seem very well made. They look awesome on my truck. They came pretty quick too.

Hi there does this fit the 2024 GMC Sierra 1500 AT4 Carbon pro edition?

- Bobby Schmidt on 8/11/2025

Yes

- Admin on 8/11/2025

View all questions

Rugged Style with Official AT4 Branding for Your GMC Sierra

The Truck Hardware Gatorback Black Wrap "AT4" Logo Mud Flaps are the ultimate solution for GMC Sierra 1500 owners looking to showcase their AT4 pride while adding durable, high-quality protection to their truck. Specifically designed to fit 2019-2026 GMC Sierra 1500 models (excluding AT4X AEV Edition), these mud flaps feature the officially licensed AT4 logo on a sleek black background, adding a distinctive and bold look to your vehicle. With a rugged yet refined design, these mud flaps provide superior defense against rocks, road debris, and mud. Measuring 12.5" wide with a 5/8" offset for extra tire clearance, these mud flaps not only protect but also enhance the style of your GMC Sierra. Please note that the FC001K finishing caps are required for installation and are sold separately.

Material Quality

Heavy-Duty Virgin Rubber: These mud flaps are constructed from premium virgin rubber, offering exceptional durability, flexibility, and resistance to cracking. This material ensures long-lasting performance, keeping your truck protected under all road conditions.

304 Stainless Steel Plate with AT4 Logo: Each mud flap features a 304 stainless steel plate with the officially licensed AT4 logo set against a striking black background. The stainless steel offers excellent corrosion resistance, while the logo showcases your truck's AT4 heritage with pride.

Nylon Brackets: The custom-fit nylon upper brackets are reinforced with fiberglass to deliver enhanced strength and durability. Resistant to fading, chipping, and cracking, these brackets ensure a stable, secure fit that keeps the mud flaps in place during all your adventures.

Installation Details

Installing the Gatorback AT4 Logo Mud Flaps is simple and hassle-free. Designed to align with your truck’s factory mounting points, these mud flaps use existing screws, eliminating the need for drilling. The FC001K finishing caps (sold separately) are required to provide a clean, OEM-quality finish by covering any exposed gaps left after removing the factory splash guards. These mud flaps come with a convenient track system that makes removal and reinstallation easy—ideal for maintenance or when extra ground clearance is needed. All necessary mounting hardware is included to ensure a quick and secure installation.

Key Features

  • Officially licensed AT4 logo on a black background for a bold look
  • Heavy-duty virgin rubber construction for maximum durability
  • 304 stainless steel plate for added corrosion resistance and style
  • Nylon upper brackets with 5/8" offset for enhanced tire clearance
  • Removable design with a track system for easy maintenance
  • Requires FC001K finishing caps for a clean, OEM-quality finish (sold separately)

Care & Maintenance: To keep your mud flaps in top condition, regular cleaning is recommended. The track system allows for easy removal, simplifying cleaning and maintenance.

  • Virgin Rubber: Clean the rubber portion using mild soap and water, avoiding harsh chemicals to prevent degradation. Virgin rubber is naturally resistant to cracking, but proper care will help maintain its flexibility and extend its lifespan.
  • Nylon Brackets: Wipe down the nylon brackets with a damp cloth and mild pH-balanced soap to keep them looking their best.

Finishing Caps (FC001K)

The FC001K finishing caps are an essential accessory for a clean, professional installation of your Gatorback mud flaps. These finishing caps fit seamlessly with the GMC Sierra’s body lines, covering any gaps left after removing the factory splash guards. They help maintain the sleek, factory-finished appearance of your truck, ensuring no exposed or unfinished areas remain. These caps require no drilling, making installation quick and easy.

Tire Coverage

  • Front mud flaps extend 8.75" below the fender
  • Rear mud flaps also extend 8.75" below the fender, offering comprehensive protection for your truck's paint and bodywork

What's Included

  • (4) 12.5" wide mud flaps (2 front driver, 2 rear passenger)
  • Custom-fit mounting brackets
  • All necessary hardware
  • Note: FC001K finishing caps are required for installation and are sold separately

Warranty Information

Truck Hardware Gatorback Mud Flaps are backed by a limited lifetime warranty, covering rubber replacement (such as tears or damage) for the lifetime of the product to the original owner. The nylon brackets come with a one-year warranty against manufacturing defects. Please note that damage caused by abuse, misuse, or regular wear and tear on brackets, plates, or mounting hardware is not covered.

Terms

  • Virgin Rubber: Virgin rubber is known for its excellent durability, flexibility, and resistance to cracking, even under extreme conditions, ensuring the mud flaps provide long-lasting protection.
  • 304 Stainless Steel: This stainless steel offers exceptional corrosion resistance and strength, making it a great choice for automotive accessories exposed to challenging environments.
  • Offset: The 5/8" offset moves the mud flap slightly outward, providing additional clearance for larger tires or side steps.

Give your GMC Sierra 1500 the rugged protection and bold style it deserves with the Truck Hardware Gatorback Black Wrap "AT4" Logo Mud Flaps. These mud flaps combine high-quality materials, an officially licensed AT4 logo, and a custom-fit design that offers unbeatable defense against road debris while showcasing your AT4 pride. With easy installation, heavy-duty construction, and a professional finish using the FC001K caps, these mud flaps are a must-have for AT4 enthusiasts. Order yours today and elevate your Sierra's protection and style.

Brand Gatorback by Truck Hardware
Length 23 inch(es)
Width 12.5 inch(es)
Height .5 inch(es)
Weight 18 lb(s)
UPC 667511038818

  • 2026 GMC Sierra 1500
  • 2025 GMC Sierra 1500
  • 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 www.p65warnings.ca.gov