Truck Hardware Gatorback AT4 Black Wrap Mud Flaps & Caps - Set of 4 - Fits 2020-2026 GMC Sierra 2500/3500HD

Part #:
GCR200K-AT4W
Sale Price
$843.30
$937.00
Free Shipping
In Stock Ships by Monday

Additional details

    ⚠️Does NOT fit AT4X
  • Includes 4 mud flaps, finishing caps and hardware (2 driver/2 passenger)
  • Remove OEM protectors or factory mud guards for install
  • Front mud flaps are removable from the finishing cap
  • Front - 9" tire coverage from fender to bottom of flap
  • Rear - 10" tire coverage from fender to bottom of flap
  • Heavy duty premium rubber flaps
  • Lifetime limited warranty

GMC Sierra HD Mud Flap Differences

Product Overview

Installation Video

Step By Step Install

Gatorback Plate Finishes

Here are the different plate finishes

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
Gator Back MudFlaps
5
Excellent Product , very rugged.Definitely helps to keeps rock chips off paint . I would purchase again!

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The Truck Hardware Gatorback "AT4" Logo Black Wrap Mud Flaps & Caps - Set is the ideal choice for 2020-2026 GMC Sierra 2500/3500 HD Single Rear Wheel truck owners who want a premium combination of rugged protection and custom styling. Featuring the iconic "AT4" logo with a sleek black wrap finish, these mud flaps are crafted to deliver superior durability while enhancing the bold, adventurous look of your Sierra HD. Please note that these mud flaps are not compatible with the 2024 GMC Sierra AT4X model.

Rugged Protection with Iconic AT4 Styling

Constructed from heavy-duty, 1/2" thick virgin rubber, these Gatorback mud flaps offer long-lasting protection from rocks, mud, gravel, and other debris. The virgin rubber material ensures unmatched durability, flexibility, and resistance to wear, making these mud flaps ideal for both on-road and off-road conditions. The officially licensed "AT4" logo is die-stamped onto 304 stainless steel plates with a durable black wrap finish that adds an extra layer of strength and a visually striking appearance, perfectly complementing the rugged, off-road styling of the AT4 trim.

OEM-Like Finishing Caps for a Seamless Look

The mud flap set includes integrated finishing caps, giving your truck a polished and factory-like appearance. These finishing caps create a seamless fit with your vehicle's original design, enhancing the aesthetic value while providing a secure mounting point for the mud flaps. The finishing caps are engineered to blend perfectly with the truck's existing styling, resulting in a cohesive and professional look.

Simple, No-Drill Installation

Installing the Gatorback mud flaps is hassle-free, thanks to their no-drill installation design. The mud flaps utilize the factory mounting points on your Sierra, along with high-quality 3M automotive-grade adhesive tape, ensuring a strong and secure attachment without drilling into the truck's body. This easy installation process preserves the original factory finish of your vehicle and requires only basic tools, taking approximately 15 minutes per flap.

Comprehensive Coverage for Maximum Protection

The front mud flaps provide 8.75" of coverage below the fender, while the rear mud flaps offer 11" of coverage below the fender. This extensive coverage helps protect your truck's exterior, step bars, and anything behind your vehicle from dirt, road grime, and debris. Whether you're driving on rough trails or city streets, these mud flaps keep your truck clean and well-protected.

Key Features:

  • AT4 Logo on Black Wrap 304 Stainless Steel Plates: Officially licensed "AT4" logo die-stamped on stainless steel plates with a durable black wrap finish, offering a bold and corrosion-resistant look that complements the truck's rugged design.
  • Heavy-Duty Virgin Rubber Construction: The 1/2" thick rubber provides maximum durability, flexibility, and resistance to road debris, ensuring reliable protection.
  • OEM-Quality Finishing Caps: Integrated finishing caps provide a factory-like appearance, ensuring the mud flaps blend seamlessly with your truck's design.
  • No-Drill Installation: Easy installation using factory mounting points and 3M automotive-grade adhesive tape, preserving your truck's body integrity.

Terms:

  • 304 Stainless Steel Plate: A high-quality grade of stainless steel known for its excellent resistance to rust and corrosion, ensuring a polished, long-lasting appearance.
  • Black Wrap Finish: A durable finish applied to the stainless steel plate that adds a refined, aggressive look while enhancing corrosion resistance.
  • Virgin Rubber: High-quality rubber in its original, unrefined state, providing enhanced durability, flexibility, and resistance to wear compared to recycled rubber.
  • No-Drill Installation: Installation method that uses existing factory mounting points, preserving the vehicle's original finish without additional drilling.

Tire Coverage:

  • Front Tire Coverage: 8.75" from the bottom of the fender to the bottom of the flap.
  • Rear Tire Coverage: 11" from the bottom of the fender to the bottom of the flap.

What's Included:

  • 2 Front Mud Flaps (12.5" wide) with Finishing Caps
  • 2 Rear Mud Flaps (12" wide) with Finishing Caps
  • All Required Mounting Hardware & Custom Fit Brackets

The Truck Hardware Gatorback "AT4" Logo Black Wrap Mud Flaps & Caps offer a premium blend of style and function, making them the perfect choice for GMC Sierra owners who value both protection and aesthetics. Made in Canada from top-quality materials, these mud flaps are built to endure tough road conditions while keeping your truck looking its best. With a limited lifetime warranty on the rubber portion, these mud flaps are a reliable investment for protecting your truck's exterior and maintaining its bold appearance.

Warranty:

Gatorback mud flaps come with a limited lifetime warranty on the virgin rubber portion, covering replacement due to normal wear and tear for the lifetime of the product to the original owner. This warranty does not cover damage caused by abuse or regular wear and tear on brackets, plates, or mounting hardware.

Product Care & Maintenance:

  • AT4 Logo Black Wrap Plates: Clean the stainless steel plates with a soft cloth and mild detergent cleaner. Avoid abrasive materials or harsh chemicals that could scratch or damage the surface. Rinse thoroughly with clean water and dry with a soft cloth to maintain the black wrap finish.
  • Virgin Rubber: Clean the rubber using a mild soap and water solution. Avoid harsh chemicals or petroleum-based cleaners, as these can degrade the rubber over time. Rinse thoroughly and allow the mud flaps to air dry for the best results.

Other Helpful Topics Related to Mud Flaps:

Other helpful topics related to the gatorback mud flaps

GM Part Number Equivalent - 19435162

Brand Gatorback by Truck Hardware
Length 23 inch(es)
Width 12 inch(es)
Height .5 inch(es)
Weight 19 lb(s)
UPC 667511047612

  • 2026 GMC Sierra 2500 HD
  • 2026 GMC Sierra 3500 HD
  • 2025 GMC Sierra 2500 HD
  • 2025 GMC Sierra 3500 HD
  • 2024 GMC Sierra 2500 HD
  • 2024 GMC Sierra 3500 HD
  • 2023 GMC Sierra 2500 HD
  • 2023 GMC Sierra 3500 HD
  • 2022 GMC Sierra 2500 HD
  • 2022 GMC Sierra 3500 HD
  • 2021 GMC Sierra 2500 HD
  • 2021 GMC Sierra 3500 HD
  • 2020 GMC Sierra 2500 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 www.p65warnings.ca.gov