Shopping cart

Cart id:
Copied

You have no items in your shopping cart.

Have a cart id?
Loading...

Sub-Total

Shipping and taxes calculated at checkout.

or

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

Part #:
GCS200K-D
Sale Price
$528.00
$660.00
Free Shipping
In Stock Ships by Friday

Additional details

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

Rear Flap Installation Video

Step By Step Install Instructions

Front 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

I love the mudflaps they really stand out on my truck
5
I love the mudflaps they really stand out on my truck
nice addition with added protection
5
Product arrived very quickly. Installed this weekend in about an hour.  Install was quick and easy.  Its recommended to remove tires, but I was able to do the install with tires on vehicle with little difficulty.  
Easy Installation
5
They were quite easy to put on and look nice!

Most Recent

2025 GMC Denali ultimate stainless steelflaps
5
They were very well made and designed to fit this vehicle, company has done a great job of manufacturing this product, the fit is number one, little expensive but of high-quality, would recommend this product to anybody that wants to protect their new vehicle.
Mud flaps
5
These mud flaps fit perfect and look good on my truck , no modifications at all they go right on my 2024 GMC DENALI ULTIMATE

will this fit on a 2019 Sierra 2500? Or is this specific for the 2020... I'm looking for the no drill option.

- Larry on 9/10/2020

Here are the front flaps: https://www.sharptruck.com/truck-hardware-gb766041
Here are the rear flaps: https://www.sharptruck.com/truck-hardware-gb766042

- Admin on 9/11/2020

View all questions

Premium Protection with a Luxurious Edge

Upgrade your 2020-2026 GMC Sierra 2500 HD & 3500 HD (single rear wheel) with the Truck Hardware Gatorback "Denali" Logo Mud Flaps - Set. These premium mud flaps are crafted for truck owners who value uncompromising quality, durability, and an upscale aesthetic. Featuring the officially licensed Denali logo on a 304 stainless steel plate, these mud flaps deliver exceptional protection while adding a sophisticated touch to your Sierra HD. Designed to endure harsh road conditions, Gatorback mud flaps keep your truck in immaculate condition.

High-Quality Materials for Long-Lasting Durability

Crafted from heavy-duty virgin rubber, the Gatorback "Denali" Logo Mud Flap Set offers outstanding strength and resilience, effectively protecting your truck from rocks, mud, gravel, and other road debris. Each flap is 12" wide and 1/2" thick, providing comprehensive coverage for your truck's wheels. The officially licensed Denali logo is die-stamped onto a 304 stainless steel plate, renowned for its exceptional resistance to corrosion, ensuring that these plates maintain their polished appearance even under tough conditions.

Custom Fit and Effortless Installation

These mud flaps are custom-designed to seamlessly fit your GMC Sierra, installing over the OEM protector. They are not compatible with OEM splash guards. The set includes all necessary mounting hardware, featuring stainless steel upper brackets with a 2" kickback for added durability and support. Made from 304 stainless steel, these brackets offer reliable support while resisting rust and corrosion. The installation process is straightforward and requires no drilling, utilizing factory mounting points for a hassle-free experience that preserves the integrity of your truck.

Key Features

  • Heavy-Duty Rubber Construction: 12" wide, 1/2" thick rubber flaps provide durable protection against road debris.
  • 304 Stainless Steel Plates with Denali Logo: Polished stainless steel plates with the official Denali logo ensure a premium look while resisting rust and corrosion.
  • No-Drill Installation: Uses factory mounting points for a quick, non-invasive installation process.
  • Custom Fit for GMC Sierra: Specifically engineered for 2020-2026 GMC Sierra 2500 HD & 3500 HD (single rear wheel), ensuring a seamless look and perfect fit.

Front and Rear Tire Coverage

  • Front Tire Coverage: 8.75" of coverage from the bottom of the OEM protector to the bottom of the flap.
  • Rear Tire Coverage: 8.75" of coverage from the bottom of the OEM protector to the bottom of the flap.

Product Care & Maintenance

  • Virgin Rubber: Clean using mild soap and water to maintain flexibility and a like-new appearance. Avoid abrasive materials or harsh chemicals to prevent damage.
  • 304 Stainless Steel Plates: Clean and polish with a stainless steel cleaner to maintain shine and prevent rust. Avoid using abrasive materials that could scratch the surface.

What’s Included

  • 2 - 12" wide Gatorback "Denali" Logo Mud Flaps for the front.
  • 2 - 12" wide Gatorback "Denali" Logo Mud Flaps for the rear.
  • Stainless steel upper brackets with 2" kickback and all mounting hardware.

Warranty Information

Truck Hardware Gatorback "Denali" Logo Mud Flaps are backed by a limited lifetime warranty. This warranty covers the rubber portion of the mud flaps against manufacturer defects for the original owner, including replacement for damages due to normal wear and tear. The warranty does not cover damage resulting from misuse, abuse, or improper installation. To initiate a warranty claim, please provide product photos and proof of purchase.

Terms

  • 304 Stainless Steel: A high-quality, corrosion-resistant stainless steel that offers superior rust resistance and durability compared to regular stainless steel, ensuring your mud flaps maintain their polished look for years.
  • Virgin Rubber: Rubber that has not been recycled or repurposed, retaining its original strength, flexibility, and durability for superior performance.
  • No-Drill Installation: Refers to an installation process that uses existing factory mounting points, eliminating the need for drilling into the vehicle’s body, thus preserving its integrity.

Protect your GMC Sierra 2500 HD or 3500 HD in style with the Truck Hardware Gatorback "Denali" Logo Mud Flaps - Set. With premium materials, easy installation, and an upscale design, these mud flaps provide the ultimate combination of form, function, and durability. Ch

Brand Gatorback by Truck Hardware
Length 23 inch(es)
Width 12 inch(es)
Height .5 inch(es)
Weight 20 lb(s)
UPC 667511041290

  • 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