Truck Hardware Gatorback Black GMC Mud Flaps - Set of 4 - Fits 2014-2018 GMC Sierra 1500 & 2015-2019 2500/3500HD

Part #:
GB1223CUTGB-2~GB1223GB-2~GB756802
Sale Price
$334.80
$372.00
Free Shipping
In Stock Ships by Monday

Additional details

    ⚠️Fits single rear wheel trucks
  • Includes (4) 12" wide mud flaps (2 driver/2 pass)
  • Drilling required for installation
  • Front tire coverage - 9" below fender
  • Rear tire coverage - 7.5" below fender
  • Lifetime limited warranty

GMC Mud Flap Set

What you get with the set

Gatorback Plate Finishes

Here are the different plate finishines

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

GMC Trucks
5
Really like the color and lettering on bright stainless steal . They are heavy duty to help keep rocks down from chipping the paint .
Gatorback Glaps
5
I really like how heavy the flaps are and they actually fit  great!
These brackets fit my 2017 Denali perfectly!
5
These were easy to use and fit perfectly. I painted mine black with some krylon primer flat paint. I mounted the flaps to the bracket, then the bracket to the wheel well, then was able to drill from the back side of the wheel well from under the truck to mount the additional self-tapping screws without removing the tires.

Most Recent

Easy to install brackets!
5
Instructions were clear, concise and easy to follow. The brackets provide an easy way to hang the mud flaps from existing OEM fender liner mount screw while aligning and securing the rest of the mount screws. Thanks for the assist!
Great coverage
5
Great coverage but not enough screws

Does this product fit a 2019 GMC Sierra 2500HD it says it does in one spot and that it doesn’t in the other

- Ethan on 1/19/2020

These do fit the 2019 2500HD. This is still the older body style and the flap set will work on the truck

- Admin on 1/19/2020

I have a 2016 GMC Sierra 1500 Denali ultimate will these fit that

- Wayne on 8/31/2020

Yes they will

- Admin on 8/31/2020

View all questions

Truck Hardware Gatorback Black Wrap "Denali" Logo Mud Flaps - Set

Add a touch of luxury and protection to your GMC Sierra with the premium Truck Hardware Gatorback Black Wrap "Denali" Logo Mud Flap Set. Specifically designed for 2014-2018 GMC Sierra 1500, 2019 GMC Sierra 1500 Limited, and 2015-2019 GMC Sierra 2500 HD and 3500 HD (Single Rear Wheel), these mud flaps offer superior defense against road debris while enhancing the refined look of your truck. Featuring the iconic Denali logo against a sleek black background, these mud flaps blend toughness with elegance, ensuring your vehicle stays clean and stylish.

Constructed from 1/2" thick heavy-duty virgin rubber, these mud flaps are built to withstand the toughest conditions while maintaining their flexibility and durability. Virgin rubber is the highest quality rubber available, providing exceptional resilience against cracking, fading, and warping, which makes it perfect for withstanding extreme temperatures and constant road debris. The 12" wide flaps offer full tire coverage to protect your truck from mud, rocks, salt, and other road hazards that could damage its paint and body.

The Gatorback series is renowned for its premium quality and rugged construction, ensuring you get the very best in heavy-duty mud flaps. Each mud flap in this set features the officially licensed Denali logo, die-stamped onto a high-quality stainless steel plate with a hand-applied vinyl overlay, ensuring a polished and professional look. The plates measure 10 1/4" x 5", adding a stylish, high-contrast accent to your truck's exterior.

Key Features

  • Heavy-Duty Virgin Rubber Construction: Made from 1/2" thick virgin rubber, these mud flaps offer superior strength, flexibility, and resistance to cracking or fading compared to recycled alternatives. The high-quality rubber keeps the flaps in place without flapping, even at highway speeds.
  • Denali Branding: Officially licensed Denali logo die-stamped onto stainless steel plates with a black wrap background. The sleek design adds a bold, personalized touch to your truck, showcasing its premium status.
  • Full Tire Coverage: The front flaps provide 5" of tire coverage, while the rear offer 7.5", ensuring that your truck is fully protected from dirt, mud, gravel, and other debris.
  • Custom-Fit Rear Support Brackets: The set includes custom rear support brackets (GB756802) for added stability, preventing unwanted movement and ensuring a secure fit for the mud flaps in any driving condition.

Installation

Front Flap Installation: The front mud flaps are designed to fasten directly to the lip of the wheel well using stainless steel self-tapping screws, and existing factory fasteners can also be used if available. The installation is simple and requires only basic tools, making it a straightforward task for any truck owner. Ensure at least 1/2" of clearance between the tire and wheel well to accommodate the flap thickness. The front flaps install flush with the wheel well, allowing seamless integration with accessories like step bars or power boards.

Rear Flap Installation: The rear mud flaps are installed using custom-fit rear support brackets and self-tapping screws. These brackets ensure that the mud flaps remain securely mounted, minimizing movement and preventing contact with the tires. This secure installation ensures that your truck is well-protected, even during off-road driving or in tough weather conditions.

What's Included

  • (2) Front Mud Flaps - 12" x 23" Cut Style (GB1223CUTD-FULL)
  • (2) Rear Mud Flaps - 12" x 23" Full Style (GB1223D-FULL)
  • Custom Rear Support Brackets (GB756802)
  • Stainless Steel Self-Tapping Mounting Screws

Care & Maintenance

To maintain the performance and appearance of your Gatorback mud flaps:

  • Rubber Flaps: Clean regularly with mild soap and water to remove dirt, grime, and road salt.
  • Stainless Steel Plates: Wipe down with a non-abrasive cleaner to keep the polished finish looking its best.
  • Periodically inspect all mounting hardware to ensure it remains tight, especially after off-road use or exposure to harsh conditions.

Manufacturer Warranty

Gatorback mud flaps are backed by a Limited Lifetime Warranty. This warranty covers the replacement of rubber components (e.g., tear-offs) for the lifetime of the product for the original owner. It does not cover damage caused by misuse, abuse, or normal wear and tear of brackets, plates, or mounting hardware.

Terms

  • Virgin Rubber: Rubber that has not been recycled or processed, offering superior strength, flexibility, and resistance to environmental damage compared to recycled rubber.
  • Self-Tapping Screws: Screws that create their own hole as they are driven into materials, simplifying the installation process.
  • Die-Stamped: A process where the logo is imprinted onto the stainless steel plate, ensuring a precise, consistent, and high-quality finish.
  • UV Resistant: The rubber material is treated to resist damage from ultraviolet (UV) light, preventing cracking or fading over time.

The Truck Hardware Gatorback Black Wrap "Denali" Logo Mud Flaps combine rugged durability with sleek styling, providing the ultimate protection for your GMC Sierra. Crafted with heavy-duty virgin rubber, officially licensed Denali branding, and custom-fit support brackets, these mud flaps are designed to protect your truck while enhancing its visual appeal. Trust Gatorback to deliver the best in quality, fit, and performance, ensuring your truck stays looking great and ready for any adventure.

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

  • 2019 GMC Sierra 2500 HD
  • 2019 GMC Sierra 3500 HD
  • 2018 GMC Sierra 1500
  • 2018 GMC Sierra 2500 HD
  • 2018 GMC Sierra 3500 HD
  • 2017 GMC Sierra 1500
  • 2017 GMC Sierra 2500 HD
  • 2017 GMC Sierra 3500 HD
  • 2016 GMC Sierra 1500
  • 2016 GMC Sierra 2500 HD
  • 2016 GMC Sierra 3500 HD
  • 2015 GMC Sierra 1500
  • 2015 GMC Sierra 2500 HD
  • 2015 GMC Sierra 3500 HD
  • 2014 GMC Sierra 1500

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