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Truck Hardware Gatorback Black American Flag Dually Mud Flaps - Set of 4 - Fits 2020-2026 GMC Sierra 3500HD

Part #:
GCAA200F-AFB~GCR204R-AFB
Sale Price
$697.60
$872.00
Free Shipping
ON ORDER — Expected to Ship in 10-14 Days

Additional details

    ⚠️Does NOT fit with rear dually wheel well liners
  • Installs over OEM protectors - Does NOT fit with OEM mud guards
  • Includes (2) 12" wide front flaps (1 driver/1 pass) with anodized aluminum brackets & hardware
  • Includes (2) 21" wide dually flaps (1 driver/1 pass) with brackets & hardware
  • Custom fit - No body drilling required for installation
  • Front tire coverage - 8.75" below protector
  • Rear tire coverage - 13.25" below fender
  • Lifetime limited warranty

Front Flap Installation Video

Step By Step Install Instructions

Rear Flap Installation Video

Step By Step Install Instructions

Gatorback Plate Finishes

Here are the different plate finishes

At a glance

Overall sentiment is overwhelmingly positive: customers consistently describe Gatorback/SharpTruck mud flaps as premium, heavy-duty, great-looking products that provide excellent protection, with standout customer service and warranty support; the main negatives are high price and occasional installation/hardware/fitment frustrations.

What Customers Liked

  • Thick, heavy rubber with a substantial feel; durable, flexible in cold/snow/ice; doesn’t “sail” at highway speeds; plates/weights feel robust and can be replaced/swapped.
  • Significantly reduces rock chips, mud/salt spray, and slush on rocker panels, running boards/power steps, bumpers, trailers/RVs; many note cleaner sides and less debris noise on gravel roads.
  • Vehicle-specific fit often described as ‘like a glove’/OEM; finishes (chrome, gunmetal, black plates) and logo plates (Z71/AT4X/FX4/Ram/Ford/Chevy, flags, etc.) ‘make the truck pop’ and draw compliments.
  • Many report straightforward installs, especially after the first flap; helpful YouTube videos; slotted holes help leveling; adjustable stick-out; removable lower section appreciated for off-roading/clearance.
  • Fast shipping is frequently praised; responsive support for exchanges/mis-shipments/damaged parts; hassle-free warranty replacements (torn/ripped flaps or scratched plates) often sent quickly.

Things to Consider

  • Most common complaint: ‘pricey/overpriced’ (often $600–$1000 with brackets/plates). Some feel brackets/plates should be included at that price.
  • Installs can be time-consuming or awkward (especially rears/dually setups), sometimes requiring wheel removal, right-angle drill, extra hands, drilling into plastic liners, trimming liners/trim pieces, or drilling/slot-cutting templates.
  • Paper instructions sometimes lacking, confusing, or mismatched vs video; hardware bags not well-separated/labeled; left/right not always marked; templates/printer scaling issues; ‘no-drill’ marketing criticized when drilling plastic is required.
  • Occasional reports of cheap/fragile fasteners, plastic clips/nut inserts pulling out/stripping, mixed metric/SAE heads, silver hardware being visually noticeable, bracket thickness/material concerns (plastic/galvanized vs stainless), and clamp-on brackets potentially rubbing paint (suggest PPF/tape).
  • Some vehicles need hole elongation, bracket bending, or ‘gerry-rigging’; occasional rubbing with oversized tires/offset wheels; a few reports of mis-shipped parts (two rears), wrong plates/colors, missing washers/spacers/clips/screws, or shipping scuffs/scratches/damaged boxes.
AI-generated from the text of customer reviews
American Flag
5
I bought these because I will be hauling a fifth wheel and wanted to protect my investment. These mud flaps are heavy duty and extra wide, which does a great job. It's a little bit tricky working around wheel wheel liners if you have them installed in your truck. But once I figured out how to do that. It was no problem installing them.
Front Flaps Work great
5
I bought the front mud flaps because the factory ones on the truck were to small. I was afraid of all the mud getting slung back onto the automatic up and down step assist would cause extra wear and tear. These mud flaps keep most of the dirt off the automatic step assist, and look great!

No questions have been asked about this product yet. Have a question? Ask it below!

Show your pride and protect your 2020-2026 GMC Sierra 3500 HD with the Truck Hardware Gatorback Black American Flag Dually Mud Flaps. This complete set, featuring both front and rear mud flaps, offers exceptional coverage for your truck while showcasing a unique black American flag design on polished stainless steel plates. These mud flaps not only protect your truck from road debris, mud, and gravel but also make a bold, stylish statement with their distinctive black flag design.

Front Mud Flaps

The front pair of Gatorback Black American Flag Mud Flaps is engineered for a precise fit on GMC Sierra 3500 HD trucks. These mud flaps feature anodized aluminum upper brackets with a 2" kickback, allowing them to follow the contours of the factory mud protectors seamlessly. The front mud flaps provide an additional 8.75" of tire coverage below the fender, ensuring optimal protection while showcasing a polished 304 stainless steel plate with the black American flag design, measuring 10 1/4" x 5".

Constructed from 1/2" thick virgin rubber, these mud flaps are built to withstand even the harshest road conditions. Installation is straightforward and requires no drilling into the truck body, utilizing factory mounting points for a secure, hassle-free fit.

Rear Mud Flaps

The rear pair of Gatorback Black American Flag Mud Flaps is crafted for dual rear wheels, offering superior protection. Measuring 21" in width, these mud flaps provide extensive coverage against mud, gravel, and other road debris, keeping your GMC Sierra clean and damage-free. The polished 304 stainless steel plate, measuring 17 1/4" x 5", features the black American flag design, adding a rugged and bold accent to your truck.

Constructed from heavy-duty virgin rubber, the rear mud flaps are designed for resilience and durability. Stainless steel support brackets provide a secure fit, ensuring long-lasting performance without requiring any body drilling.

Heavy-Duty Design for Long-Lasting Performance

The Gatorback Black American Flag Dually Mud Flaps are crafted for durability while adding a bold, stylish appearance to your truck. With polished 304 stainless steel plates featuring a black American flag design and heavy-duty virgin rubber construction, these mud flaps are built to withstand challenging road conditions while making your truck stand out on the road.

Tire Coverage

  • Front flaps: 8.75" of additional coverage below the fender.
  • Rear flaps: 13.25" of additional coverage below the fender.

Effortless Installation

These mud flaps are easy to install, utilizing factory screws and mounting points. The set includes custom-fit brackets and all necessary hardware for a quick and secure installation. Each flap can be installed using standard tools, making it convenient for truck owners to add these rugged mud flaps for enhanced protection and a bold look.

Key Features

  • Black American Flag Design Plate: Features a polished 304 stainless steel plate with a black American flag design, adding a rugged and patriotic look to your truck.
  • Enhanced Tire Coverage: Provides 8.75" of front tire coverage and 13.25" of rear tire coverage, effectively shielding your truck from road debris, mud, and grime, ideal for dual rear wheel configurations.
  • Heavy-Duty Virgin Rubber Construction: Made from 1/2" thick virgin rubber, designed to endure tough road conditions, reducing wear and tear on your vehicle and ensuring long-lasting performance.
  • Effortless, No-Drill Installation: Uses factory screws and includes custom-fit brackets for a secure and straightforward installation, offering a premium, hassle-free experience.

Terms

  • Anodized Aluminum: A type of aluminum that has undergone an anodizing process to improve corrosion resistance, durability, and overall strength. This lightweight yet strong material is ideal for automotive applications where exposure to harsh conditions is common.
  • 304 Stainless Steel: A high-quality stainless steel known for its excellent resistance to rust, corrosion, and harsh weather conditions. It is ideal for automotive applications where exposure to the elements is common, ensuring long-lasting durability and a polished finish.
  • OEM (Original Equipment Manufacturer): Refers to parts made by the vehicle manufacturer. These mud flaps are designed to work with OEM mud protectors for an ideal fit.
  • Sail: The movement of mud flaps due to wind or speed, potentially reducing their effectiveness. The weight and design of these flaps help to minimize sail.
  • Virgin Rubber: Rubber that has not been recycled or reclaimed, ensuring superior durability and flexibility compared to recycled rubber.

What's Included

  • Front Pair of Gatorback Black American Flag Mud Flaps (Driver and Passenger Side)
  • Rear Pair of Gatorback Black American Flag Mud Flaps (Driver and Passenger Side)
  • Installation Hardware and Mounting Brackets

Warranty

Truck Hardware Gatorback Black American Flag Dually Mud Flaps are backed by a limited lifetime warranty. This warranty covers the rubber portion against tear-offs for the lifetime of the product for the original owner. The warranty provides peace of mind, offering a replacement if the rubber flaps come off due to normal wear and tear. However, it does not cover damage resulting from abuse or regular wear on brackets, plates, or mounting hardware.

Product Care & Maintenance

  • 304 Stainless Steel: To maintain the polished finish of the 304 stainless steel plates, clean them regularly with a soft cloth and a 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 polished look.
  • Virgin Rubber: Clean the rubber portion 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.
  • 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.

For GMC Sierra owners who want rugged protection with a bold, patriotic statement, the Truck Hardware Gatorback Black American Flag Dually Mud Flaps are the perfect choice. With enhanced coverage, effortless installation, and premium-quality construction, these mud flaps are designed to protect your truck from road debris while adding a striking and bold appearance. Choose Gatorback Black American Flag Dually Mud Flaps for lasting performance and a powerful expression of your American pride.

BrandGatorback by Truck Hardware
Length24 inch(es)
Width21 inch(es)
Height.5 inch(es)
Weight35 lb(s)

  • 2026 GMC Sierra 3500 HD
  • 2025 GMC Sierra 3500 HD
  • 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 www.p65warnings.ca.gov