Truck Hardware Gatorback Denali Dually Mud Flaps - Set

Was: $940.00
$846.00
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Part #: GCS200F-D~GCR204R-D
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Our Guarantee
  • Does NOT fit with optional felt fender liners
  • Fits 2020-2024 GMC Sierra 3500 HD (Dual Rear Wheel)
  • Installs over OEM protector - Does NOT fit with OEM mud guards
  • 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 - 12.5" of tire coverage from fender to bottom of flap
  • Rear - 13.25" of tire coverage from fender to bottom of flap
  • Lifetime limited warranty

Front Flap Installation Video

Step By Step Install Instructions

Rear Flap Installation Video

Step By Step Install Instructions

Gatorback Plate Finishes

Here are the different plate finishines

Most Helpful

From: on September 17, 2021
Rear mud flaps
5
Very good quality and easy to install!! Expensive but you get what you pay for
2 people found this helpful.
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From: on April 25, 2021
Dually mud flaps
5
Excellent product, fit well and easy to install, thanks!
2 people found this helpful.
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Great looking mud flaps.
5
I was really impressed with the quality of the mud flaps. Installation was simple and they look great!
2 people found this helpful.
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Most Recent

2023 Sierra 3500 Mudflaps
5
Straight out of the box you can see the quality of these mudflaps. These things are hefty. Installation with brackets was quick and easy. Overall happy with the quality and look. The only downside is the price but well worth it in my opinion.
1 person found this helpful.
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Awesome Mud Flaps
5
These no drill mud flaps were super easy to install and look great on the truck. I bought a new truck and did not want the mud flaps from the dealership. There mud flaps were horrible looking and required the use of self tapping screws and drilling to install them. You will not be disappointed with these mud flaps and the ease of installation.
1 person found this helpful.
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This Denali Logo Gatorback Dually Mud Flap Set is designed for a perfect fit on dually GMC Sierra 3500 trucks.These mud flaps will add a level of funtionality to your vehicle while also giving it a unique look. The 12" wide heavy front mud flaps and 21" wide rear rubber mud weigh in at 10 lbs each will protect your vehicle from rocks, mud, gravel, snow and more. You will see your vehicle staying cleaner longer, less junk on your step bars, as well as fewer rock chips on the paint. This weight will ensure that they do not sail when you are driving and they do their job. The Truck Hardware Gatorback series mud flaps are the industries highest quality, heavy duty mud guards! The rugged design and quality finish of these mud flaps make the perfect compliment to your truck. Featuring a 1/2" thick rubber flap, these mud flaps are sure to impress while they protect your investment. This set includes everything you need to get the flaps installed on your truck.

Installation is made simple featuring no body drilling using factory exisiting fastereners, mounting locations & custom designed brackets. If there are not any fasteners the flaps will come with the needed hardware and brackets for solid installation. Installation can done with tools you have at home. The rear pair of flaps come with the custom fit brackets and the holes that line up to the factory fasteners already routered into the flaps along with all of the hardware needed for installation. The heavy duty rubber ensures that there will not be any debris that gets passed these flaps. The front mud flaps install overtop of the factory protectors and extend down for added tire coverage and vehicle protection. The upper brackets are made out of 304 polished stainless steel so they will not rust or corrode.

The Denali text is officially licensed ensuring it looks perfect and is die stamped into the stainless steel plate with a hand applied vinyl overlay. The stainless plate measures 10 1/4" x 5" on the front and the rear plate measures 17 1/4" x 5". You will appreciate the attention to detail in these flaps.

Other helpful topics related to the gatorback mud flaps

Manufacturer Warranty-

Gatorback mudflaps are backed by a Limited lifetime warranty. This warranty covers rubber replacement (ex- tear offs) for the lifetime of the product to the original owner. It does not cover damage caused by abuse, or regular wear and tear on brackets, plates, or mounting hardware.

BrandGatorback by Truck Hardware
Length24 inch(es)
Width21 inch(es)
Height.5 inch(es)
Weight35 lb(s)

  • 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
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