Product media viewer
Truck Hardware -10%
Video
Video

Product photo, 1 of 9

Loading customer photos…

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

  • Loading reviews…
  • Part #
Sale Price $643.50 $715.00
You save $71.50 (10%)
In Stock Ships by Thursday

Fitment exception Does NOT fit with OEM rear wheel well liners.

Fitment exception Installs over OEM protector - Does NOT fit with OEM splash guards.

Added to cart
Free Shipping
Questions about fit or installation? Email us Call 800-218-0609
Loading fit options…

Know before you buy

Product essentials and key specifications, organized for a quick review.

Product overview

  • Includes (2) 12" wide front flaps (1 driver/1 pass) with stainless brackets & hardware
  • Includes (2) 21" wide dually flaps (1 driver/1 pass) with brackets & hardware
  • Custom fit - No body drilling required for installation
  • Front - 8.75" tire coverage from fender to bottom of flap
  • Rear - 13.25" tire coverage from fender to bottom of flap
  • Lifetime limited warranty

Product videos

2 videos

See the product up close and follow the installation step by step.

Product details

Supporting product information.

Equip your GMC Sierra 3500 HD dually with the Truck Hardware Gatorback Stainless Plate Dually Mud Flaps and experience the ultimate in protection and style. Unlike the other Gatorback mud flap options, this set installs over the existing mud protectors, giving you enhanced tire coverage and superior protection. The other option uses a front flap finishing cap for a refined OEM look but offers less tire coverage. If you're seeking maximum protection with a premium aesthetic, these Gatorback mud flaps are your perfect match.

The front pair of mud flaps features a stainless steel upper bracket with a 2" kickback, formed to follow the contours of the factory protector in the wheel well. They provide an additional 8.75" of tire coverage below the fender and do not require the removal of the OEM protector. This makes them ideal for those who value both rugged durability and ease of installation. The flaps are made from 1/2" thick virgin rubber to provide maximum resilience and are supported by a polished 304 stainless steel plate that won't rust or corrode.

The rear pair of mud flaps, custom-fit for 2020-2026 GMC Sierra 3500 HD dually models, delivers 13.25" of tire coverage from the bottom of the fender, effectively shielding your truck from rocks, mud, gravel, snow, and other road debris. The heavy-duty rubber flaps, paired with stainless steel support brackets, ensure your vehicle remains cleaner for longer, reduce step bar mess, and minimize rock chips on your paint.

Key Features

  • Superior Tire Coverage: Offers 8.75" of front tire coverage and 13.25" of rear tire coverage, providing enhanced protection against road debris, mud, and grime.
  • 304 Polished Stainless Steel Bracket: Features polished stainless steel upper brackets that resist rust and corrosion, maintaining a premium look for years to come.
  • Heavy-Duty Virgin Rubber Construction: Constructed from 1/2" thick premium rubber to withstand tough road conditions and keep your truck protected.
  • Effortless Installation: Installs using factory mounting points—no body drilling required. Includes all brackets and hardware for a secure and straightforward installation.

These Gatorback mud flaps are designed with ease of installation in mind. Installation is made simple by using the factory's existing fasteners, mounting locations, and custom-designed brackets. If additional fasteners are needed, the set includes all the necessary hardware and brackets for a solid, secure fit. The mud flaps mount overtop of the factory protectors, extending down for additional tire coverage and increased vehicle protection.

The front stainless steel plate measures 10 1/4" x 5", adding a stylish touch while protecting your truck. The rear pair features custom-fit brackets that ensure an easy installation using the factory mounting points. With installation taking about 15 minutes per flap, you can quickly fit them at home with standard tools.

The rugged design and quality finish of these mud flaps make them the ideal complement to your GMC Sierra, ensuring it stays cleaner, better protected, and looking great. Backed by a limited lifetime warranty, the Gatorback Stainless Plate Mud Flaps are crafted to last and protect your investment.

Front and Rear Tire Coverage

  • Front Tire Coverage: Provides 87.5" of coverage from the bottom of the fender to the bottom of the flap, ensuring effective protection for the front wheels.
  • Rear Tire Coverage: Provides 13.25" of coverage from the bottom of the fender to the bottom of the flap, delivering complete protection for the dual rear wheels.

Terms

  • OEM (Original Equipment Manufacturer): Refers to parts produced by the original vehicle manufacturer. These mud flaps are designed to work with the existing OEM mud protectors for the best fit and coverage.
  • Kickback: A design feature that offsets the mud flap away from the tire, offering increased tire clearance and improved coverage.
  • 304 Stainless Steel: A type of stainless steel known for its excellent resistance to corrosion and rust, making it ideal for automotive use.
  • Virgin Rubber: Rubber that has not been recycled or reclaimed, ensuring superior strength, flexibility, and durability.

Warranty

Truck Hardware Gatorback Stainless Plate Dually 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. Damage resulting from abuse or regular wear on brackets, plates, or mounting hardware is not covered.

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.
  • 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 GMC Sierra owners looking for a combination of rugged protection and a polished look, the Truck Hardware Gatorback Stainless Plate Dually Mud Flaps are an excellent choice. With unmatched tire coverage, easy installation, and a durable construction, these mud flaps are designed to provide superior protection while enhancing the appearance of your truck. Invest in Gatorback Stainless Plate Mud Flaps for long-lasting protection and style that will keep your truck looking its best.

Other helpful topics related to the gatorback mud flaps

Customer reviews

Loading customer reviews…

Questions & answers

0 questions

Be the first to ask the SharpTruck team about fitment, installation, or what’s included.

Ask the SharpTruck team

Your name and question may appear publicly after review. Your email stays private and is used only to notify you when the SharpTruck team publishes an answer. Your draft stays in this tab if you close the form.

Thanks—your question is awaiting review. The SharpTruck team reviews questions during business hours, and we’ll email you when an answer is published.
0 of 2,000 characters used.

Loading related products…
Loading product recommendations…

Safety & compliance

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