Truck Hardware Gatorback Black Wrap AT4 Mud Flaps - Set of 4 - Fits 2019-2026 GMC Sierra 1500

Part #:
GCR29K-AT4W
Sale Price
$517.50
$575.00
Free Shipping
In Stock Ships by Monday
FC001K Finishing Caps (Required For Installation)

Additional details

    ⚠️Requires FC001K finishing caps / Does NOT fit AT4X & AT4X AEV
  • Includes (4)12" wide mud flaps, rear support brackets and hardware
  • No body drilling required for installation
  • Front tire coverage - 6.5" below fender
  • Rear tire coverage - 7" below fender
  • Heavy duty premium rubber flaps
  • Lifetime limited warranty

Finishing Cap Install Video

Step By Step Install Instructions

Front Flap Install Video

Step by Step Instructions

Rear Flap Installation Video

Step by Step Instructions

Gatorback Plate Finishes

Here are the different plate finishes

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
Great Looking and High Quality
5
I was on the fence about whether these mud flaps were worth the money but after installing them, I couldn't be happier.  The mud flaps are superior quality and really look sharp! I will definitely be a repeat customer for future vehicles!
AT4 Mudflaps and Endcaps
5
Very sharp looking. Added just the right amount of bling to the truck. Very easy to install and only a couple of hours to get it done.  With the addition of the endcaps, it creates a smooth finish to the fender flair and takes away the bulky rock guard.
Makes the truck look sharp
5
Looked at these right away and thought they were pretty expensive.  I then read and noticed they did come with the finishing caps as well which helped a little.  I ended up pulling the trigger because the stock “splash guards” weren’t keeping the body clean when I drove on gravel roads.  Slapped these on and you don’t even notice I went down a gravel road plus they look awesome.  East install.  All around good product which it should be for the price.

Hey guys! Just checking in...A couple months ago, I think in February I had asked about these AT4 flaps in the no drill set for a 2020 AT4 2500 and was told that they were in the works, and probably a couple months out on production dates. Just following up to see how that is coming. My truck has been delayed in production due to all the things going on but I wanted to just follow up and see what updates I could get. Thanks Jordan Webb

- Jordan Webb on 4/13/2020

Jordan, the flaps were just release for the truck. They had to go a different route with these since replacement caps did not work.
Here is the set of flaps, www.sharptruck.com/2020-gmc-sierra-25003500-hd-at4-black-wrap-logo-gatorback-mud-flaps-set

- Admin on 4/14/2020

View all questions

Durable Protection with a Classic Look

Enhance the protection of your 2019-2026 GMC Sierra 1500 with the Truck Hardware Gatorback Rubber Mud Flaps. Designed for those who value practicality and reliability, these mud flaps provide superior protection against road debris while offering a clean and classic appearance. Built from heavy-duty virgin rubber, these mud flaps are a durable solution that helps keep your truck cleaner and free from chips, dings, and damage caused by dirt, rocks, and other hazards.

Full Coverage for Ultimate Protection

The Gatorback Rubber Mud Flaps are engineered to provide comprehensive tire coverage for your GMC Sierra 1500. Each mud flap is constructed from 1/2" thick heavy-duty virgin rubber and measures 12" wide. The front mud flaps extend 6.5" below the fender, while the rear mud flaps extend 7", providing extensive protection to keep your truck's exterior safe from flying debris and road grime.

These mud flaps are built to withstand the toughest conditions, from daily commutes to off-road adventures. The heavy-duty virgin rubber resists wear and damage, ensuring these mud flaps maintain their protective quality for years to come.

Effortless Installation

Installing the Gatorback Rubber Mud Flaps is straightforward and requires no drilling into your truck's body. The set comes with custom-fit hardware that uses factory existing mounting points, allowing for a secure and seamless fit. These mud flaps fit flush within the wheel well, maintaining a cohesive and polished look for your truck.

For a complete look after the removal of OEM protectors, Truck Hardware Sierra 1500 Finishing Caps (sold separately) are recommended. These finishing caps provide an OEM-like appearance, ensuring your truck retains a polished look with no cutting or modifications required.

Heavy-Duty Construction for Long-Lasting Performance

The Gatorback Rubber Mud Flaps are crafted from virgin rubber, known for its superior durability and resilience. Unlike reclaimed rubber, virgin rubber maintains its flexibility, making these mud flaps ideal for protecting against even the harshest elements. The flaps are designed to minimize sail, staying securely in place even at highway speeds, ensuring dependable performance mile after mile.

Key Features

  • Heavy-Duty Virgin Rubber Construction: Built from premium virgin rubber for excellent durability, offering long-lasting protection for your truck.
  • Comprehensive Tire Coverage: Front mud flaps extend 6.5" below the fender, and rear mud flaps extend 7", providing full tire coverage against road debris.
  • Effortless, No-Drill Installation: Uses factory screws and custom-fit hardware for a secure, hassle-free installation without drilling into your truck's body.
  • Classic Design: Provides a clean and classic look that complements your truck's rugged exterior.

Terms

  • Virgin Rubber: Rubber that has not been recycled, offering superior durability and flexibility compared to reclaimed rubber.
  • OEM (Original Equipment Manufacturer): Refers to parts made by the original vehicle manufacturer, ensuring compatibility and quality. These mud flaps are designed to work with OEM mounting points for an ideal fit.
  • Sail: The movement of mud flaps due to wind or speed, which can reduce their effectiveness. These mud flaps are designed to minimize sail, keeping them securely in place.

Warranty

Truck Hardware Gatorback Rubber 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 offers peace of mind, providing 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

  • 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.
  • Finishing Caps: To maintain the appearance and longevity of the finishing caps, clean them regularly with a mild soap and water solution. Avoid abrasive materials or harsh chemicals that could damage the surface. Rinse thoroughly and allow the caps to air dry for the best results. Routine care will help preserve their quality and ensure that they continue to look great on your truck.

What's Included

  • Front Pair of Gatorback Rubber Mud Flaps (Driver and Passenger Side)
  • Rear Pair of Gatorback Rubber Mud Flaps (Driver and Passenger Side)
  • Custom-Fit Installation Hardware

For GMC Sierra 1500 owners who value reliable protection and a classic design, the Truck Hardware Gatorback Rubber Mud Flaps are the perfect choice. With full tire coverage, effortless installation, and heavy-duty construction, these mud flaps provide excellent protection while enhancing the look of your truck. Choose Gatorback Rubber Mud Flaps for a dependable and stylish upgrade that complements your truck's rugged yet refined nature.

BrandGatorback by Truck Hardware
Length20 inch(es)
Width12 inch(es)
Height.5 inch(es)
Weight19 lb(s)
UPC667511036234

  • 2026 GMC Sierra 1500
  • 2025 GMC Sierra 1500
  • 2024 GMC Sierra 1500
  • 2023 GMC Sierra 1500
  • 2022 GMC Sierra 1500
  • 2021 GMC Sierra 1500
  • 2020 GMC Sierra 1500
  • 2019 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