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

Part #:
GCAA200K-DW
Sale Price
$651.20
$814.00
Free Shipping
ON ORDER — Expected to Ship in 10-14 Days

Additional details

    ⚠️Does NOT fit AT4X / Does NOT fit with OEM splash guards
  • Includes (4)12" wide mud flaps (2 driver/2 pass)
  • Installs over OEM protector
  • Anodized aluminum upper bracket with 2" kickback
  • Front tire coverage - 8.75" below protector
  • Rear tire coverage - 8.75" below protector
  • Heavy duty premium rubber flaps
  • Lifetime limited warranty

Front Flap Installation Video

Step By Step Install Instructions

Rear Flap Installation Video

Step By Step Install Instructions

GMC Sierra HD Mud Flap Differences

Product Overview

Gatorback Plate Finishes

Here are the different plate finishes

At a glance

Customer sentiment is overwhelmingly positive: buyers repeatedly praise Gatorback/SharpTruck mud flaps as premium, heavy‑duty, great-looking, vehicle-specific products that provide excellent protection, with standout customer service and fast shipping. The main negatives are high price, occasionally challenging/long installations (especially rears/dually), and periodic hardware/instructions/packaging issues or minor fitment quirks on certain trims/oversized tires.

What Customers Liked

  • Thick/heavy rubber, substantial weight, rugged/OTR-grade feel; holds up for years (5–10+ years reported), flexible in cold/snow, doesn’t “sail” at highway speed; strong brackets add stability.
  • Look “sharp,” “classy,” and OEM-like; logo/plate options (Ford/Chevy/Ram/AT4X/Z71/flags, etc.) get many compliments and add ‘pop’.
  • Many report perfect fit/‘like a glove,’ good tire coverage, options for offsets/oversized tires (e.g., offset versions preventing rubbing), adjustable positioning via slotted holes.
  • Significantly reduces mud/road salt/slush on running boards/steps and sides; helps prevent rock chips and protects trailers/RVs/boats; improves cleanliness on gravel/dirt roads and in winter conditions.
  • Often installs using factory holes and avoids drilling into metal body; videos and written instructions frequently cited as helpful; many install without removing wheels (fronts especially).
  • Consistently praised for responsive support, warranty replacements for tears/rips, quick resolution of shipping damage/wrong parts/missing items, and proactive communication/updates.
  • Fast delivery (often 2–5 days), accurate orders/fitment tools, good packaging noted by many; easy ordering and exchanges/returns.
  • Removable lower section on some models appreciated for added clearance during off-roading, then quick reinstall.

Things to Consider

  • Frequently described as expensive/‘hard pill to swallow’ (some citing $600–$1000+), though many still say it’s worth it.
  • Rears and dually setups often challenging/time-consuming; some recommend removing rear wheels, using a right-angle drill, clamps, or a helper; alignment can take time.
  • Some find written directions vague/confusing; hardware not clearly labeled (washers/spacers), left/right not distinguished, videos not always model-specific; “no-drill” marketing criticized when drilling in liners/plastic is still required.
  • Occasional missing screws/washers/clips/parts; mixed metric/SAE hardware complaints; plastic fasteners/clips stripping or pulling out; desire for stainless/black hardware and better washer/spacer labeling.
  • Some reports of rubbing with oversized tires/turning lock; minor misalignment of holes/templates; driver/passenger side fit differences; not perfect fit for some newer model years or with wheel-well liners/fender flares/steps.
  • Several note rear support brackets feel ‘necessary’ but are not always included; frustration at needing to add brackets separately or not being told upfront.
  • A few cases of brackets coming loose in transit causing scratches; damaged outer boxes; occasional wrong color/plate shipped.
  • Silver fasteners/washer heads stand out; some plates/finishes streak or rust (rare report of rust forming on logo); desire for thicker metal in certain kits.
  • Some note flaps hang low for off-road use; risk of tearing in deep snow, tall grass, or trail obstacles (though removability helps on some models).
AI-generated from the text of customer reviews

Most Helpful

2020 GMC DENALI HD
5
Third truck I have put a set of these on and this set was the easiest to install, uses all factory hardware with no drilling or self tap screws required. There is no measuring height to make sure they're even just a little bit of adjustment in and out depending how far out you want them to be. Definitely worth the money and do  great job of keeping the paint protected and the running boards clean.
2024 Gmc Sierra 2500HD Denali Ultimate
5
In very happy I decided on these, very well made, a lil pricey but so was my truck. I wanted something to protect my truck from rock salt, mud, and everything in between. Installation was easy, just make sure to step back and look at them before the final tightening to make sure they are square and level.
Excellent product very nice quality
5
I thought they were very expensive until I see them on the truck !! Great look

Most Recent

Great Quality, Easy Install
5
Overall very happy with these mud flaps.  They are exactly what I was looking for.  They look like they fit the truck well and could of have been factory.  They are not overly aggressive but still protect my truck and trailer well.  Install was fairly easy.  All the washers come in one bag and look extremely similar, it would have been easier if they had been separated but it was not that hard to figure out.
2021 gmc Denali mud flaps
5
Looks awesome ,fit great and protect  truck from rock chips

I was wondering why the plain ss is abouy 100.00 cheaper? Is there any chance of getting a more discounted price on these. Thanks, Abe

- Abe on 4/9/2020

The blank stainless flaps are less expensive because there are no licensing fees and with the black wrap flaps the black background is applied by hand so there is more labor involved in producing them.

- Admin on 4/10/2020

View all questions

If you're looking to elevate your GMC Sierra 2500 or 3500 HD, these premium Truck Hardware Gatorback Black Wrap "Denali" Logo Mud Flaps are the perfect addition. Engineered specifically for 2020-2026 GMC Sierra models (excluding AT4X), these mud flaps offer unmatched quality, style, and protection for your vehicle. With a striking black anodized aluminum bracket, officially licensed "Denali" 304 stainless steel logo plate with a black background, which enhances contrast to make the logo more visible and eye-catching. The black background also provides a sleek, stylish appearance that complements the truck's aesthetic while protecting the plate from scratches and wear., and heavy-duty virgin rubber construction, this set of four mud flaps is designed to protect your truck while adding a sleek, rugged aesthetic.

These mud flaps are more than just an accessory; they represent top-tier craftsmanship with no compromises on quality or functionality. Designed to be installed over OEM protectors (while not compatible with OEM splash guards), the mud flaps feature 12" wide, 1/2" thick heavy-duty virgin rubber that ensures complete coverage for front and rear tires. The anodized aluminum upper bracket includes a 2" kickback, providing optimal clearance and durability, while the high-quality materials ensure they won’t rust or corrode, standing the test of time against harsh environments.

The Best in Material Quality and Engineering

Truck Hardware Gatorback mud flaps are crafted to meet the highest standards. These mud flaps are constructed from premium-grade virgin heavy-duty rubber that resists splitting and tearing, providing robust protection against debris, gravel, mud, and road salt. Virgin rubber is rubber that has not been recycled or repurposed, meaning it retains its original properties, including superior strength, flexibility, and durability. This ensures that the mud flaps maintain their shape and effectiveness even in extreme conditions. The custom-fit, black anodized aluminum brackets are not only visually appealing but also designed to withstand corrosion. With a design that follows the contours of the OEM protectors, the brackets ensure a seamless, factory-like fit, eliminating any risk of rubbing against the body of your truck. Additionally, the officially licensed Denali logo is die-stamped into a 304 304 stainless steel plate with a hand-applied vinyl overlay, giving these mud flaps a premium look that enhances the rugged elegance of your GMC.

Designed for Practicality and Ease of Installation

These mud flaps have been meticulously engineered for easy, straightforward installation. Using the existing factory fasteners and mounting locations means no drilling into the body of your truck is required, preserving the integrity of your vehicle while providing a solid and secure attachment. All the necessary hardware is included to ensure a quick installation, whether you’re a do-it-yourselfer or prefer professional installation. The upper brackets provide a sturdy foundation, ensuring the mud flaps stay in place even in the harshest conditions. With an extended length providing 8.75 inches of coverage below the OEM protector, you’ll experience less mess on your step bars and fewer rock chips, keeping your vehicle cleaner and in better condition.

The Denali Logo for a Touch of Distinction

This Gatorback set features a die-stamped Denali logo on a 304 stainless steel plate, adding a touch of luxury to the ruggedness of your mud flaps. This attention to detail ensures that not only are these mud flaps functional, but they also enhance the premium aesthetic of your truck. The 304 stainless steel plate’s measurements of 10.25" x 5" perfectly complement the size of the mud flaps, adding a visual appeal that will catch everyone’s eye.

Key Features

  • Heavy-Duty Virgin Rubber Construction: Provides 12" wide and 1/2" thick premium virgin rubber for exceptional durability and coverage, effectively protecting your vehicle from road debris.
  • Custom Anodized Aluminum Bracket: Black anodized aluminum upper bracket with a 2" kickback ensures rust and corrosion resistance while providing ample clearance.
  • No-Drill Installation: Utilizes factory mounting points with no body drilling required, making installation easy and preserving your vehicle’s integrity.
  • Officially Licensed Denali Logo: Die-stamped on a 304 stainless steel plate, giving your truck a high-quality, signature look.

Tire Coverage

  • Front Tire Coverage: Extends 8.75 inches below the OEM protector.
  • Rear Tire Coverage: Extends 8.75 inches below the OEM protector.

What’s Included

  • Four Gatorback mud flaps (two front, two rear)
  • Custom-fit black anodized aluminum brackets
  • Mounting hardware and installation instructions

Warranty Information

These Gatorback mud flaps come with a limited lifetime warranty against manufacturer defects. The warranty includes rubber replacement for tear-offs but does not cover regular wear and tear, abuse, or improper maintenance. To initiate a warranty claim, please provide product photos and a proof of purchase.

Terms

  • Anodized Aluminum: Aluminum treated to create a protective, corrosion-resistant surface. Best cleaned with a mild detergent.
  • 304 Stainless Steel: A high-quality grade of stainless steel known for its excellent resistance to rust and corrosion, used for the Denali logo plates. Minor surface marks may polish out with regular maintenance, ensuring a long-lasting and attractive appearance.
  • Virgin Rubber: Rubber that has not been recycled or repurposed, retaining its original properties for superior strength, flexibility, and durability.
  • Kickback: The extension of the upper bracket, providing additional clearance to prevent mud flaps from interfering with the tires.

Product Care & Maintenance

  • Virgin Rubber: Clean with mild soap and water to maintain flexibility and durability. Avoid harsh chemicals that could degrade the rubber.
  • 304 Stainless Steel: Clean with a mild stainless steel cleaner and regularly polish to prevent stains or minor surface corrosion. 304 stainless steel is highly resistant to rust and corrosion, providing long-lasting durability and a premium look for your mud flaps. Always use appropriate cleaning products to maintain the finish.
  • 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.

With the Truck Hardware Gatorback Black Wrap "Denali" Logo Mud Flaps, you’re not just getting a set of mud flaps—you’re investing in long-term protection and a premium, rugged style that complements your GMC Sierra. Keep your vehicle protected from the harsh elements, road debris, and maintain its pristine appearance. These mud flaps combine industry-leading quality and sophisticated design to create the ultimate accessory for your truck.

Brand Gatorback by Truck Hardware
Length 23 inch(es)
Width 12 inch(es)
Height .5 inch(es)
Weight 20 lb(s)
UPC 667511040453

  • 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