Truck Hardware Gatorback Black Wrap AT4X Mud Flaps - Set of 4 - 2024-2026 GMC Sierra 2500/3500HD AT4X

Part #:
GCAA214K-AT4XW
Sale Price
$845.10
$939.00
Free Shipping
In Stock Ships by Monday

Additional details

    ⚠️Fits AT4X models only
  • Front Tire Coverage: 10.75" from the bottom of the protector to the bottom of the flap
  • Rear Tire Coverage: 10.75" from the bottom of the protector to the bottom of the flap
  • 2" offset beveled edges
  • Includes front and rear pair w/mounting hardware

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

Most Helpful

These are the only mud flaps for the HD AT4X
5
These branded mud flaps fit well and look great on the 2500 AT4X.  I highly recommend them if you are considering installing mud flaps on your AT4X.
Awesome but expensive
4
The only reason for not giving 5 stars is the price. Almost $1000 after tax is just too much for mud flaps. That being said they are top quality, easy to install, and look great!
Great looking
5
Company was fabulous when I called and told them I was missing the front mud flaps from the box. Refunded my money and helped me in every way. Will do business again.

Most Recent

2024 AT4X 2500hd
5
Great mud flaps and customer service. The first set was damaged in shipping and customer service shipped out a replacment ASAP. Very good fit and has all hardware needed. Took about 15-20 min to install all 4.
Outstanding quality
5
Highly recommend this product!

Will these also fit the 2024 Sierra 1500 AT4X

- Roy Shay on 10/30/2024

No, for the 1500 you need https://www.sharptruck.com/search?q=GCN211K

- Admin on 10/30/2024

Could you tell me why these cost over $200 per mudguard ????? I would really like to know.

- Tim on 10/31/2024

The Truck Hardware Gatorback Black Wrap AT4X Mud Flaps - Set - Fits AT4X Only are specifically designed for the 2024 GMC Sierra 2500/3500 HD single rear wheel trucks, exclusively for the AT4X model. These mud flaps deliver exceptional protection, a unique rugged aesthetic, and an ideal fit, enhancing the overall appeal of your AT4X. Whether you are tackling tough trails or navigating everyday roads, these mud flaps help to keep your truck clean by shielding it from rocks, mud, gravel, and other debris, all while adding a distinct look with the black wrap stainless steel plates.

These Gatorback mud flaps are crafted from heavy-duty 1/2" thick premium rubber that is 12" wide, providing outstanding durability and effective protection for your vehicle. The black wrap stainless steel plates add a sleek, modern touch and are die stamped with the officially licensed AT4X logo, ensuring they stay looking great and resist fading. The custom-fit upper brackets are made from high-quality black anodized aluminum that won't corrode or rust. The unique design follows the factory contours of your truck, making sure the mud flaps blend seamlessly into the wheel well without needing to remove the factory protectors.

Installation is straightforward and easy. These mud flaps are engineered to use factory fasteners and existing mounting locations, which means there's no need for drilling into the body of your truck. If additional fasteners are required, the mud flaps come with all necessary mounting hardware and brackets for a solid installation. With only basic tools, you can complete installation in approximately 15 minutes per flap. These mud flaps are a practical upgrade, reducing mud splatter, preventing rock chips, and keeping your truck's paint and step bars cleaner for longer periods.

Key Features:

Black Wrap AT4X Logo Plates: The stainless steel plates are die stamped with the AT4X logo and feature a sleek black wrap that enhances your truck's rugged appearance.
Heavy-Duty Rubber Construction: The 1/2" thick, 12" wide rubber flaps deliver maximum durability and protect your vehicle from road debris.
No-Drill Installation: Custom-designed brackets use existing factory holes, eliminating the need to drill into your truck's body.
2" Offset Beveled Edges: Offset edges provide additional tire clearance while maintaining full coverage, ensuring your truck stays clean and protected.
Industry-Specific Terms:

Black Wrap Logo Plate: A stainless steel plate that features a black wrap finish, providing a sleek, rugged aesthetic along with resistance to corrosion and wear.
Anodized Aluminum: A process that makes aluminum more resistant to corrosion and wear while providing a sleek finish. The black anodized aluminum gives the mud flaps a rugged yet stylish appearance
No-Drill Installation: Installation that does not require drilling into the body of the vehicle, preserving the original factory integrity.
Tire Coverage:

Front Tire Coverage: 10.75" from the bottom of the protector to the bottom of the flap
Rear Tire Coverage: 10.75" from the bottom of the protector to the bottom of the flap
What's Included:

2 Front Mud Flaps
2 Rear Mud Flaps
All Required Mounting Hardware
The Truck Hardware Gatorback Black Wrap AT4X Mud Flaps are the perfect addition for GMC Sierra AT4X owners seeking a combination of effective protection and rugged style. Made in Canada, these mud flaps are built to handle tough conditions while maintaining the polished look of your truck. With a limited lifetime warranty on the rubber, you can have confidence that your mud flaps are built to last. Protect your truck and enhance its look with the Gatorback Black Wrap AT4X Mud Flaps.

Warranty:

Gatorback mud flaps come with a limited lifetime warranty on the 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 normal wear and tear on brackets, plates, or mounting hardware.

- Admin on 11/1/2024

Is the bottom rubber half removable like the ones you all make for the AT4X 1500?

- Robert Francis on 6/2/2025

No, these are not removable

- Admin on 6/2/2025

View all questions

The Truck Hardware Gatorback Black Plate Mud Flaps - Set - Fits AT4X Only are custom-designed for the 2024-2026 GMC Sierra 2500/3500 HD single rear wheel trucks, specifically the AT4X model. These mud flaps are built to provide top-notch protection, practicality, and a distinctive, rugged look that complements the AT4X's adventurous spirit. Whether you are navigating rocky trails or dealing with unpredictable road conditions, these mud flaps help keep your truck clean by shielding it from road debris, mud, and gravel while adding a sleek touch with the black anodized aluminum finish.

Crafted from 1/2" thick heavy-duty rubber, these 12" wide mud flaps are built to withstand the toughest conditions, ensuring your vehicle remains cleaner for longer. The custom-fit upper brackets are made from black anodized aluminum, which is not only corrosion-resistant but also designed to follow the contours of the smaller factory protector in the wheel well, giving your truck a refined and seamless appearance. The 2" offset beveled edges allow for additional tire clearance, providing maximum protection while maintaining a clean look. These mud flaps install overtop of the factory protectors without requiring removal, and are engineered for easy, no-drill installation using the factory fasteners and mounting locations.

Installation is made simple with everything you need included in the set, from mounting hardware to custom-designed brackets. The Gatorback mud flaps use existing factory holes, so there's no need to drill into the body of your truck. Installation can be done with tools you have at home, taking approximately 15 minutes per flap. These mud flaps are a practical addition to your truck, helping reduce mud splatter, prevent rock chips, and ultimately protect your truck's finish. The heavy-duty rubber construction ensures that rocks, mud, and other debris are effectively blocked, reducing the impact on your vehicle and keeping your step bars and paint cleaner for longer periods.

Key Features:

  • Black Anodized Aluminum Finish: The black anodized aluminum plates and brackets resist corrosion and provide a sleek, rugged look.
  • Heavy-Duty Rubber Construction: The 1/2" thick, 12" wide rubber flaps offer maximum durability and protection from road debris.
  • No-Drill Installation: Custom-designed brackets use factory holes for installation, eliminating the need to drill into the body of your truck.
  • 2" Offset Beveled Edges: The offset edges provide extra tire clearance, ensuring a perfect fit without compromising coverage.

Industry-Specific Terms:

  • Anodized Aluminum: A process that makes aluminum more resistant to corrosion and wear while providing a sleek finish. The black anodized aluminum gives the mud flaps a rugged yet stylish appearance.
  • No-Drill Installation: Installation that does not require drilling holes into the body of the vehicle, preserving the integrity of the original factory parts.

Tire Coverage:

  • Front Tire Coverage: 10.75" from the bottom of the protector to the bottom of the flap
  • Rear Tire Coverage: 10.75" from the bottom of the protector to the bottom of the flap

What's Included:

  • 2 Front Mud Flaps
  • 2 Rear Mud Flaps
  • All Required Mounting Hardware

The Truck Hardware Gatorback Black Plate Mud Flaps - Set are a top choice for GMC Sierra AT4X owners looking for premium protection and a stylish upgrade. Manufactured in Canada, these mud flaps are designed to last, withstanding tough conditions and providing the protection your truck deserves. With a limited lifetime warranty on the rubber portion, you can have peace of mind that your investment is protected. Protect your truck and enhance its look with the Gatorback Black Plate Mud Flaps.

Warranty:

Gatorback mud flaps are backed by a limited lifetime warranty on the 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:

  • Virgin Rubber: Clean the rubber portion of the mud flaps using a mild soap and water solution. Avoid harsh chemicals or petroleum-based cleaners, as they can degrade the rubber over time. Rinse thoroughly and let the mud flaps air dry for best results.
  • Anodized Aluminum:

    Anodized aluminum is a durable, corrosion-resistant material featuring a specialized coating that enhances protection against rust while providing an attractive finish. To preserve its appearance and functionality, appropriate cleaning methods are essential. Incorrect cleaning practices may compromise the coating, resulting in fading or pitting. This guide provides detailed instructions on maintenance, including routine procedures, advanced cleaning techniques, precautions, and considerations regarding touch-free car washes.

    Routine Cleaning and Preventive Maintenance

    Regular cleaning is necessary to prevent the accumulation of contaminants that could impair the surface. Employ non-abrasive methods to safeguard the thin protective layer.

      • Frequency: Perform cleaning every 3 months, or more frequently in environments with high pollution, proximity to coastal areas (where salt may accelerate corrosion), or high usage.
      • Basic Method:
        • Begin by rinsing with plain water to remove loose debris. Utilize a soft sponge or cloth for gentle wiping.
        • For minor soiling, prepare a solution of mild, pH-neutral soap (such as dish detergent) with warm water. Apply using a soft cloth, employing circular motions without excessive force.
        • Rinse thoroughly with clean water to eliminate any residue.
        • Dry the surface promptly with a soft towel to avoid water spots.
      • Tools: Select non-abrasive items such as soft-bristle brushes or cloths. Avoid steel wool or abrasive pads, as they may scratch and damage the coating.
      • Preventive Measures:
        • Apply a suitable protective wax or sealant designed for anodized aluminum following cleaning (e.g., automotive-grade waxes for vehicle parts).
        • In urban or industrial settings, monitor for acidic precipitation or organic deposits, which may etch the surface if not addressed promptly.
        • Store items indoors when feasible to mitigate ultraviolet fading of colored finishes.

    Deep Cleaning for Persistent Contaminants

    For significant buildup, such as oxidation or embedded grime, employ more intensive yet cautious approaches. Always test methods on an inconspicuous area first.

      • Mild Abrasive Methods: Form a paste with baking soda and water for gentle application with a soft cloth, followed by thorough rinsing. For oxidized sections, use fine-grit sandpaper (600-1000) lightly with water and polish afterward, though this should be infrequent to prevent thinning the coating.
      • Commercial Products: Select cleaners formulated for anodized aluminum with a neutral pH. Citrus-based options are suitable; refrain from using unverified household cleaners.

    Practices to Avoid

    Anodized aluminum is susceptible to substances that may dissolve or abrade its protective oxide layer.

      • Harsh Chemicals: Refrain from using strong acids (e.g., hydrochloric or phosphoric) or alkalis (e.g., sodium hydroxide), as they may cause etching, discoloration, or removal of the finish.
      • Abrasive Tools: Avoid vigorous scrubbing implements or polishes that could dull the surface and expose the base metal.
      • High-Pressure Washing: While suitable for initial rinsing, limit pressure to under 1,000 PSI to prevent intrusion into seams.
      • Environmental Exposures: Minimize contact with chlorine, fluoride, or heavy metals, which may induce pitting.

    Impact of Touch-Free Car Washes on Anodized Aluminum

    Touch-free car washes offer convenience and minimize paint scratches by employing high-pressure jets and chemical applications without physical contact. However, they may adversely affect anodized aluminum elements, such as trim or wheels, owing to the intensity of the processes and chemicals.

      • Potential Damage: These systems frequently utilize high-pH alkaline detergents and acidic pre-treatments that can interact with the coating, leading to discoloration, dulling, etching, or fading. Alkaline agents are particularly detrimental, potentially dissolving the layer and resulting in a chalky or pitted appearance. Repeated use may exacerbate issues, especially on colored anodizing, causing inconsistent hues or loss of gloss.
      • Risk Factors: The absence of mechanical brushing necessitates more potent chemicals and elevated pressures (up to 1,500 PSI), which may infiltrate seals or aggravate minor imperfections. Although generally compatible with standard automotive paint, these washes can deplete protective sealants on anodized components more rapidly.
      • Recommendations: Avoid touch-free car washes for items featuring anodized aluminum whenever possible, particularly those with high-alkaline formulations. Prefer manual washing with pH-neutral solutions. If utilization is necessary (e.g., for seasonal salt removal), rinse affected areas thoroughly afterward and apply a protective coating. Verify the chemical composition of the wash or conduct a test on a small section if gentler options are claimed.

    Common Harsh Chemicals in Touch-Free Car Washes

    Touch-free systems depend on robust chemical blends for effective cleaning without contact. These typically include:

      • Alkaline Detergents: High-pH (9-14) compounds such as sodium hydroxide or potassium hydroxide, which emulsify oils and grime but may etch anodized aluminum by eroding the oxide layer.
      • Acidic Pre-Treatments: Low-pH (2-5) solutions incorporating hydrofluoric acid, phosphoric acid, or citric acid to dissolve mineral deposits and salts. These can induce pitting or discoloration if not adequately neutralized.
      • Surfactants and Solvents: Components like volatile organic compounds (VOCs), glycol ethers, or petroleum distillates that facilitate cleaning but may include irritants capable of degrading seals and finishes over time.
      • Additional Agents: Chelating compounds, foam enhancers, or corrosion inhibitors intended for protection, yet potentially abrasive in elevated concentrations. Multi-step processes alternating acidic and alkaline applications heighten risks for sensitive materials such as anodized aluminum.

    These formulations prioritize efficiency and compatibility with paint, rendering them less ideal for specialized coatings like anodized aluminum.

    Effective maintenance of anodized aluminum requires consistent application of gentle, neutral cleaning agents to prolong its durability and preserve its attributes. By eschewing aggressive chemicals and abrasive techniques, irreversible damage can be averted. Although touch-free car washes provide convenience, their dependence on potent alkaline and acidic substances presents notable risks to anodized surfaces, potentially causing discoloration or deterioration—manual methods are preferable where feasible. In the event of damage, seek professional assistance for restoration. Adhering to these recommendations will ensure the material retains its optimal condition for an extended period.

Brand Gatorback by Truck Hardware
Length 23 inch(es)
Width 12 inch(es)
Height .5 inch(es)
Weight 19 lb(s)
UPC 667511050957

  • 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

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