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Truck Hardware Gatorback Black Wrap Denali Dually Mud Flaps - Rear Pair - Fits 2020-2026 GMC Sierra 3500HD

Part #:
GCR204R-DW
Sale Price
$501.60
$627.00
Free Shipping
ON ORDER — Expected to Ship in 10-14 Days

Additional details

    ⚠️Does NOT fit with rear dually wheel well liners
  • Includes (2) 21" wide dually flaps (1 driver/1 pass) & brackets
  • Custom fit - No body drilling required for installation
  • Rear - 13.25" tire coverage from fender to bottom of flap
  • Lifetime limited warranty

Gatorback Plate Finishes

Here are the different plate finishes

Rear Flap Installation Video

Step By Step Install

GCR202 and GCR203 Flap Differences

Product Overview

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
Rear mud flaps
5
Good heavy duty rubber but the brackets are very flimsy

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

Upgrade your 2020-2026 GMC Sierra 3500 HD dually with the Truck Hardware Gatorback Black Wrap Denali Logo Dually Mud Flaps. This rear set of mud flaps provides exceptional protection for your truck's dual rear wheels while showcasing your pride in the Denali brand. Each mud flap features the officially licensed Denali logo, die-stamped into a black wrap 304 stainless steel plate, giving your truck a bold and refined appearance that complements its upscale design.

Constructed from heavy-duty 1/2" thick virgin rubber, these mud flaps are engineered to handle even the toughest road conditions. They effectively shield your truck from rocks, mud, gravel, and other road debris, keeping your vehicle cleaner and reducing paint damage. The Gatorback Black Wrap Denali Mud Flaps offer both premium protection and an elevated aesthetic, making them a perfect choice for GMC Sierra owners who value performance and style.

Rear Mud Flaps

These rear mud flaps are specifically designed for GMC Sierra 3500 HD dually models, providing comprehensive coverage for your truck's dual rear wheels. Measuring an impressive 21" in width, they deliver extensive protection from road debris, mud, and grime. The black wrap 304 stainless steel plate with the Denali logo measures 17 1/4" x 5", adding a distinctive and luxurious touch to your truck. The use of black wrap 304 stainless steel ensures outstanding rust and corrosion resistance, thanks to its high chromium content which provides excellent durability against the elements, maintaining the polished and bold appearance even under harsh conditions.

The virgin rubber construction ensures remarkable durability, allowing these mud flaps to withstand rough road conditions without compromising performance. The wide design helps minimize "sail" at high speeds, keeping the mud flaps securely in place for optimal protection. Installation is simple and requires no body drilling—each rear flap comes with custom-fit brackets and all necessary hardware for a secure and seamless fit.

Heavy-Duty Design for Lasting Performance

The Gatorback Black Wrap Denali Dually Mud Flaps are engineered for GMC Sierra models owners who demand the best in both protection and style. The virgin rubber construction ensures resilience, while the black wrap 304 stainless steel plate with the Denali logo provides a refined, premium touch with superior corrosion resistance. These mud flaps are designed to endure challenging road conditions while maintaining their sleek and upscale appearance, making them an essential accessory for those who appreciate quality and aesthetics.

Installation

Installing these mud flaps is straightforward and hassle-free. The rear set utilizes factory screws and existing mounting points, eliminating the need for drilling. The custom-fit design ensures compatibility with your truck's existing features, and each flap includes custom-fit brackets and all necessary hardware for a secure and simple installation.

You can easily fit them at home using standard tools. Once installed, these mud flaps integrate seamlessly with your truck’s design, providing both superior protection and a distinctive Denali look.

Key Features

  • Denali Logo: Features black wrap 304 stainless steel plates with a die-stamped Denali logo, adding a bold and refined look while offering superior rust resistance.
  • Enhanced Tire Coverage: Provides 21" of width for increased tire coverage and maximum protection against road debris, ideal for dual rear wheel configurations.
  • Durable Virgin Rubber Construction: Constructed from 1/2" thick virgin rubber to withstand challenging 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, delivering a premium, hassle-free experience.

Key Terms to Know

  • OEM (Original Equipment Manufacturer): Refers to parts made by the vehicle manufacturer. These mud flaps are designed to fit over the original mud protectors provided by GMC.
  • Sail: When mud flaps move excessively due to wind or speed, potentially reducing their effectiveness. The weight and design of these flaps minimize sail.
  • Black Wrap Stainless Steel: A type of stainless steel with a black wrap finish that provides excellent corrosion resistance and a bold, premium look, ideal for automotive applications.
  • Virgin Rubber: Rubber that has not been recycled or reclaimed, offering superior durability and flexibility compared to recycled rubber.

Tire Coverage:

  • Rear Tire Coverage: 13.25" from the bottom of the fender to the bottom of the flap.

Warranty

The Gatorback Black Wrap Denali 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

  • Black Wrap 304 Stainless Steel Plates: To maintain the black wrap finish, clean the plates 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. The 304 stainless steel provides excellent rust and corrosion resistance, making it ideal for long-term durability in all weather conditions.
  • 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.

For GMC Sierra owners seeking a combination of premium protection and a bold, upscale look, the Truck Hardware Gatorback Black Wrap Denali Logo Dually Mud Flaps are an ideal choice. With enhanced coverage, effortless installation, and a luxurious Denali aesthetic, these rear mud flaps are designed to protect your truck from road debris while adding a refined, premium appearance. Choose Gatorback Black Wrap Denali Mud Flaps for lasting performance and sophisticated style.

Other helpful topics related to the gatorback mud flaps

Brand Gatorback by Truck Hardware
Length 24 inch(es)
Width 21 inch(es)
Height .5 inch(es)
Weight 24 lb(s)
UPC 667511041832

  • 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