Truck Hardware Gatorback Stainless Plate Dually Mud Flaps - Rear Pair - Fits 2020-2026 Silverado/Sierra 3500HD

Part #:
GCR204R-SS
Sale Price
$413.10
$459.00
Free Shipping
In Stock Ships by Monday

Additional details

    ⚠️Does NOT fit with rear dually wheel well liners
  • Includes (2) 21" wide dually flaps (1 driver/1 pass) & brackets
  • Custom fit - No body drilling required for installation
  • Rear - 13.25" tire coverage from fender to bottom of flap
  • Lifetime limited warranty

Gatorback Plate Finishes

Here are the different plate finishes

Rear Flap Installation Video

Step By Step Install

GCR202 and GCR203 Flap Differences

Product Overview

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

Gatorback Dually Mudflaps w/Stainless Plate
5
I'm satisfied overall. You might have to pay premium price for it, but the manufacturing and quality of the materials are, in my opinion, top notch. The mudflaps with the plate gives it a heavy/solid feel, which is great, especially when you are driving fast, wet roads, and/or on rocky terrain. Additionally, I like how you can replace the plates in the event you get tired of the ones you have. I might buy either the High Country or Chevy logo plates in the future.

Additionally, the bolt that secures the mudflaps retention bracket against the fender flare is too short. I was glad that I have same size but longer bolts in my garage. I wish Gatorback could supply a bolt that is, at least, a half inch longer so that customers would not have a hard time. See pics.

Finally, my dually has the factory wheel liner installed. I had to trim the liners and cut slits on them to accommodate the bracket. Not sure if it compromises the integrity of the liner but we'll find out in the future. I probably could've cut slits instead off trimming parts on the liner but I didn't want to go through the trouble. See pics of the liner to see what it takes to install one.
2023 GMC 3500hd dually
5
Wow, doesn’t these mudflaps help complete the look to the rear of the truck. They are made with thick rubber and you can definitely tell these flaps are not from the cheap store. I know they will look good for years to come. Thank you Sharp Truck for offering these awesome mudflaps.
Gatorback Rear mud flaps
5
The mud flaps are very well made and heavy duty. I was hesitant about spending that much money on them but they are worth it!

Most Recent

GMC 2020 dually Denali
5
Justin and Matt were very helpful with placing my order and arranging the shipment.  The instructions were very easy and clear to follow.
GMC 2020 dually Denali
5
Justin and Matt were very helpful with placing my order and arranging the shipment.  The instructions were very easy and clear to follow.

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Enhance your 2020-2026 Chevrolet Silverado 3500 HD or GMC Sierra 3500 HD dually with the Truck Hardware Gatorback Stainless Plate Dually Mud Flaps. This rear set of mud flaps provides outstanding protection for your truck's dual rear wheels, while featuring a classic stainless steel design that adds a rugged yet refined look to your vehicle. These mud flaps feature a polished 304 stainless steel plate, delivering a sleek and timeless appearance that perfectly complements the robust styling of your truck.

Constructed from heavy-duty 1/2" thick virgin rubber, these mud flaps are built to withstand the toughest road conditions. They effectively protect your truck from rocks, mud, gravel, and other road debris, keeping your vehicle cleaner and reducing the risk of paint damage. The Gatorback Stainless Plate Mud Flaps offer practical protection with a polished aesthetic, making them an excellent choice for Silverado and Sierra owners who value both performance and style.

Rear Mud Flaps

These rear mud flaps are specifically designed for dually Chevrolet Silverado and GMC Sierra 3500 HD models, providing comprehensive coverage for your truck's dual rear wheels. Measuring 21" in width, they deliver extensive protection from road debris, mud, and grime. The polished 304 stainless steel plate measures 17 1/4" x 5", adding a distinctive and high-end touch to your truck. The use of 304 stainless steel ensures outstanding rust and corrosion resistance, maintaining the polished finish even under harsh environmental conditions.

The virgin rubber construction ensures remarkable durability, allowing these mud flaps to withstand rough road conditions while maintaining peak performance. The wide design helps minimize "sail" at high speeds, keeping the mud flaps securely in place for optimal protection. Installation is simple and requires no body drilling—each rear flap comes with custom-fit brackets and all necessary hardware for a secure and seamless fit.

Heavy-Duty Design for Long-Lasting Performance

The Gatorback Stainless Plate Dually Mud Flaps are engineered for Silverado and Sierra owners who demand premium protection and a classic aesthetic. The virgin rubber construction ensures resilience, while the polished 304 stainless steel plate provides a refined, premium touch with superior corrosion resistance. These mud flaps are designed to endure challenging road conditions while maintaining their sophisticated appearance, making them an essential accessory for those who appreciate quality and durability.

Installation

Installing these mud flaps is simple and hassle-free. The rear set utilizes factory screws and existing mounting points, eliminating the need for drilling. The custom-fit design ensures compatibility with your truck's existing features, and each flap includes custom-fit brackets and all necessary hardware for a secure and straightforward installation.

You can easily fit them at home using standard tools. Once installed, these mud flaps integrate seamlessly with your truck’s design, providing both superior protection and a polished, distinctive look.

Key Features

  • Polished Stainless Steel Plate: Features polished 304 stainless steel plates that add a classic and refined look while offering superior rust resistance.
  • Enhanced Tire Coverage: Provides 21" of width for increased tire coverage and maximum protection against road debris, ideal for dual rear wheel configurations.
  • Durable Virgin Rubber Construction: Constructed from 1/2" thick virgin rubber to withstand challenging road conditions, reducing wear and tear on your vehicle and ensuring long-lasting performance.
  • Effortless, No-Drill Installation: Uses factory screws and includes custom-fit brackets for a secure and straightforward installation, delivering a premium, hassle-free experience.

Terms

  • OEM (Original Equipment Manufacturer): Refers to parts made by the vehicle manufacturer. These mud flaps are designed to fit over the original mud protectors provided by Chevrolet and GMC.
  • Sail: When mud flaps move excessively due to wind or speed, potentially reducing their effectiveness. The weight and design of these flaps minimize sail.
  • 304 Stainless Steel: A type of stainless steel known for its excellent corrosion resistance, making it ideal for automotive applications where exposure to the elements is common.
  • Virgin Rubber: Rubber that has not been recycled or reclaimed, offering superior durability and flexibility compared to recycled rubber.

Tire Coverage:

  • Rear Tire Coverage: 13.25" from the bottom of the fender to the bottom of the flap.

Warranty

The Gatorback Stainless Plate 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 provides peace of mind, offering a 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

  • Stainless Steel Plates: To maintain the polished finish, clean the plates regularly with a soft cloth and a mild detergent cleaner. Avoid abrasive materials or harsh chemicals that could scratch or damage the surface. Rinse thoroughly with clean water and dry with a soft cloth to maintain the polished look. The 304 stainless steel provides excellent rust and corrosion resistance, making it ideal for long-term durability in all weather conditions.
  • 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.

For Chevrolet Silverado and GMC Sierra owners seeking a combination of premium protection and a classic, refined look, the Truck Hardware Gatorback Stainless Plate Dually Mud Flaps are an ideal choice. With enhanced coverage, effortless installation, and a polished aesthetic, these rear mud flaps are designed to protect your truck from road debris while adding a premium appearance. Choose Gatorback Stainless Plate Mud Flaps for lasting performance and timeless style.

Other helpful topics related to the gatorback mud flaps

BrandGatorback by Truck Hardware
Length24 inch(es)
Width21 inch(es)
Height.5 inch(es)
Weight24 lb(s)
UPC667511041726

  • 2026 Chevrolet Silverado 3500 HD
  • 2025 Chevrolet Silverado 3500 HD
  • 2024 Chevrolet Silverado 3500 HD
  • 2023 Chevrolet Silverado 3500 HD
  • 2022 Chevrolet Silverado 3500 HD
  • 2021 Chevrolet Silverado 3500 HD
  • 2020 Chevrolet Silverado 3500 HD
  • 2026 GMC Sierra 3500 HD
  • 2025 GMC Sierra 3500 HD
  • 2024 GMC Sierra 3500 HD
  • 2023 GMC Sierra 3500 HD
  • 2022 GMC Sierra 3500 HD
  • 2021 GMC Sierra 3500 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