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

Part #:
GCS200K-SS
Sale Price
$428.40
$476.00
Free Shipping
In Stock Ships by Monday

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

Front Flap Installation Video

Step By Step Install Instructions

Rear 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

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
Mud flaps
5
Sharp looking mud flaps that fit great and easy to install
Just what I wanted.
5
Look great, fit great and east to install, what more could you ask for.

Do these come in black?

- Josh Gallant on 4/1/2021

yes, here is the set with the black brackets, www.sharptruck.com/2020-gmc-sierra-25003500hd-custom-fit-stainless-steel-mud-flap-set-2

- Admin on 4/1/2021

View all questions

Premium Protection for Your Sierra HD Truck

Upgrade your 2020-2026 GMC Sierra 2500 HD & 3500 HD (single rear wheel) with the Truck Hardware Gatorback Stainless Plate Mud Flaps - Set. These premium mud flaps are designed for truck owners who value both quality and style, providing exceptional protection while enhancing the rugged look of your Sierra HD. Built to withstand harsh conditions, these mud flaps will keep your truck looking its best while protecting it from road debris.

High-Quality Materials for Long-Lasting Durability

The Gatorback Mud Flap Set features heavy-duty rubber construction combined with polished 304 stainless steel plates for maximum durability and strength. The 304 stainless steel is known for its excellent corrosion resistance, ensuring that the plates retain their polished look without rusting or corroding, even in challenging weather conditions. Each flap is 12" wide and 1/2" thick, providing ample protection against rocks, mud, gravel, and more, while the stainless steel plates add a stylish, premium finish to your truck.

Custom Fit and Easy Installation

These mud flaps are engineered for a custom fit on your Sierra HD. The front flaps are removable from the finishing caps, allowing for easy maintenance and replacement when needed. Designed to install using existing factory mounting points, these mud flaps require no drilling, preserving your truck's integrity. This set includes everything you need for installation, including four mud flaps, finishing caps, and all necessary hardware. The installation process is straightforward and can be done with basic tools, giving you added protection in no time.

Key Features

  • Heavy-Duty Rubber Construction: 12" wide, 1/2" thick rubber flaps for robust protection against road debris.
  • 304 Stainless Steel Plates: Polished stainless steel plates that resist rust and corrosion, adding a premium touch to your truck.
  • Custom Fit for GMC Sierra: Specifically designed for 2020-2026 GMC Sierra 2500 HD & 3500 HD (single rear wheel), ensuring a seamless look and perfect fit.
  • No-Drill Installation: Uses factory mounting points, making installation non-invasive and preserving the truck's integrity.

Front and Rear Tire Coverage

  • Front Tire Coverage: Provides 9" of coverage from the bottom of the fender to the bottom of the flap, offering effective protection for the front wheels.
  • Rear Tire Coverage: Provides 10" of coverage from the bottom of the fender to the bottom of the flap, ensuring complete coverage for the rear wheels.

Product Care & Maintenance

  • Virgin Rubber: Clean using mild soap and water to maintain flexibility and appearance. Avoid using 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

  • Two 12" wide Gatorback Stainless Plate Mud Flaps for the front (removable from finishing caps).
  • Two 12" wide Gatorback Stainless Plate Mud Flaps for the rear.
  • Custom-fit finishing caps and all mounting hardware.

Warranty Information

Truck Hardware Gatorback Stainless Plate 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 HD from the harshest road conditions with the Truck Hardware Gatorback Stainless Plate Mud Flaps - Set. Combining premium materials, easy installation, and a stylish design, these mud flaps provide unmatched protection and durability for your truck. Invest in Gatorback Mud Flaps today and experience the ultimate in quality and style for your Sierra HD.

Brand Gatorback by Truck Hardware
Length 23 inch(es)
Width 12 inch(es)
Height .5 inch(es)
Weight 20 lb(s)
UPC 667511038535

  • 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