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

Part #:
GB1223CUTAA~GB1223AA~GB756802
Sale Price
$311.40
$346.00
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

Gatorbacks
5
3rd set I’ve ran on different trucks, best all around performance/ durability. Excellent customer service switching out for first color I ordered!
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!

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Truck Hardware Gatorback Black Plate Mud Flaps - Set

Upgrade your truck's protection with the Truck Hardware Gatorback Black Plate Mud Flap Set. Tailor-made to fit 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 provide premium protection against road debris while adding a sleek, rugged look to your vehicle. Featuring black anodized aluminum plates, these mud flaps are designed for those who appreciate both form and function in their truck accessories.

Constructed from 1/2" thick heavy-duty virgin rubber, these mud flaps are built to withstand the toughest conditions, offering superior durability, flexibility, and resistance to cracking or fading. Virgin rubber ensures maximum performance, giving you mud flaps that can endure extreme weather conditions, rocks, and road grime, all while maintaining their integrity. The 12" wide flaps offer optimal tire coverage, keeping your truck cleaner for longer and reducing paint damage from kicked-up debris.

The Gatorback series is known for its exceptional quality and rugged design. The anodized black aluminum plate adds a modern, aggressive look to your truck without compromising functionality. The plates are meticulously crafted to match the high standards of Truck Hardware’s Gatorback line, ensuring your truck is protected while looking its best.

Key Features

  • Heavy-Duty Virgin Rubber Construction: Crafted from 1/2" thick virgin rubber, these mud flaps are incredibly durable, resisting cracking, fading, and wear. The high-quality rubber material provides excellent coverage and stability, even at highway speeds.
  • Black Anodized Aluminum Plates: Each flap features a 10 1/4" x 5" black anodized aluminum plate, adding a sleek and aggressive look to your truck. The plates are designed to maintain their appearance in harsh conditions, adding style without sacrificing toughness.
  • Full Tire Coverage: The front flaps offer 5" of tire coverage, while the rear flaps provide 7.5", protecting your truck from dirt, gravel, mud, and other debris that can cause damage.
  • Custom-Fit Rear Support Brackets: Included custom rear support brackets (GB756802) provide added stability, ensuring the mud flaps stay securely in place without excessive movement or wear.

Installation

Front Flap Installation: The front mud flaps are designed to fasten directly to the lip of the wheel well using self-tapping screws, with existing factory fasteners also usable if available. The installation is simple, requiring only basic tools. Be sure to leave at least 1/2" of clearance between the tire and wheel well to accommodate the flap thickness. These flaps install flush with the wheel well, ensuring compatibility with accessories like step bars, power boards, or side steps.

Rear Flap Installation: The rear mud flaps are secured using the included custom-fit rear support brackets and self-tapping screws. These brackets provide added stability, preventing the flaps from contacting the tires and minimizing movement during challenging driving conditions.

What's Included

  • (2) Front Mud Flaps - 12" x 23" Cut Style (GB1223CUTAA)
  • (2) Rear Mud Flaps - 12" x 23" Full Style (GB1223AA)
  • Custom Rear Support Brackets (GB756802)
  • Stainless Steel Self-Tapping Mounting Screws

Care & Maintenance

To keep your Gatorback Black Plate Mud Flaps looking their best:

  • Rubber Flaps: Clean regularly with mild soap and water to remove dirt, grime, and road salt.
  • Aluminum Plates: Wipe down with a non-abrasive cleaner to maintain the anodized finish.
  • Periodically inspect all mounting hardware to ensure it remains secure, 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 original owner for the lifetime of the product. 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 reprocessed, providing superior strength, flexibility, and resistance to environmental damage compared to recycled alternatives.
  • Self-Tapping Screws: Screws that create their own hole as they are driven into materials, making installation easier and more secure.
  • Anodized Aluminum: Aluminum that has been coated through an anodizing process to increase durability and resistance to corrosion, while also providing an attractive finish.

The Truck Hardware Gatorback Black Plate Mud Flaps offer an ideal combination of rugged protection, refined aesthetics, and high-quality materials. Featuring durable virgin rubber and black anodized aluminum plates, these mud flaps are designed to provide outstanding defense against road debris while adding a sleek, modern look to your truck. Trust Gatorback for quality craftsmanship and dependable performance, ensuring your truck remains protected and looking great on any adventure.

BrandGatorback by Truck Hardware
Length23 inch(es)
Width12 inch(es)
Height.5 inch(es)
Weight23 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