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Truck Hardware Finishing Caps - 6 Piece - Fits 2020-2026 GMC Sierra 2500/3500HD

Part #:
FC004K
Sale Price
$384.00
$480.00
Free Shipping
In Stock Ships by Tuesday

Additional details

    ⚠️Does NOT fit AT4X
  • Includes (6)finishing caps (Front Wheels/Front of Rear Wheels/Back of Rear Wheels)
  • Completes fender flares when OEM protectors are removed
  • No drilling required for installation
  • Mud flap deletes for removal of OEM splash guards

Installation Video

Step By Step Install Instructions

37” Tire Solution for GMC AT4 HD Owners

Video from Jake’s Lifted Life

At a glance

Reviews are overwhelmingly positive: customers say SharpTruck finishing caps/mud flap delete kits fit like OEM, install quickly with no cutting/drilling, and significantly improve appearance while often reducing tire rub after lifts/oversized tires. A smaller set of reviewers note imperfect alignment/gaps, paint/texture concerns (black coating over white plastic), missing coverage for certain flap locations, and that the price can feel high for plastic; one severe complaint mentions hardware/nut issues and corrosion on an expensive flap setup.

What Customers Liked

  • Frequently described as “fit like a glove/factory piece,” matching OEM trim lines, texture, and color; gives a seamless, clean, finished look.
  • Many installs reported at ~15–60 minutes for a full set; simple hand tools; often no need to remove wheels/tires; clear written instructions and helpful videos.
  • Repeated praise for avoiding metal cutting, extra holes, or drilling required by other brands; uses factory mounting points/hardware in many cases.
  • Removes “ugly/old man/grandpa” factory guards; cleans up body lines; makes truck look taller and more aggressive; lots of compliments reported.
  • Many report reduced or eliminated rubbing with 33–37" tires, leveling kits, and lifts (e.g., 35s/37s on Sierra/Denali/AT4/2500HD); some still needed minor trimming or still rub at full lock depending on setup.
  • Often called heavy-duty, thicker/more durable than OEM, solid plastic; packaging praised (individually wrapped, well protected).
  • Fast delivery commonly noted (sometimes 2 days/under a week); responsive support; occasional mentions of handwritten thank-you.

Things to Consider

  • Some report small gaps, misalignment (especially front pieces), rear fitment “not quite right,” or holes not lining up 100%/not all holes used; may require adjusting, force, or minor trimming with certain lifts/wheel offsets.
  • A few users still experienced rubbing with 35x12.50 or certain wheel/offset combinations; may need additional trimming or other modifications; one reviewer felt claims about eliminating rub were incorrect for their setup.
  • Multiple mentions that parts are white plastic with black textured paint; scuffs/scratches can reveal white underneath; seams/inside not painted can show white; some wished they were molded in black.
  • Recurring comments that they’re pricey/overpriced for plastic (and concerns about long-term fade); one extreme complaint about very expensive flaps and hardware issues.
  • Some wish kits included all 6 locations by default or that specific caps (notably in front of rear wheels) were available/included; some had to buy multiple sets or ordered the wrong kit (4 vs 6 pieces).
  • Rear areas can be tight to access; removing factory clips/tabs can be difficult; some needed additional bolts (e.g., 10mm) or had to drill out rivets on certain splash guard configurations; occasional note about needing the right drivers/flex heads.
  • One reviewer reported locking nuts spinning/stripped connections and corrosion when attempting to reuse after ~20k miles (context: very high-priced flap setup), leading to frustration.
AI-generated from the text of customer reviews

Most Helpful

Awesome Fit!
5
One of the easiest mods I’ve done so far! They look great and such a difference it makes!
Dialed
5
These improve the look of the truck a ton. fitment is ok, a few have a little gap between fender flare no matter how much I adjust them. Overall they look way better than the oem mudflaps.
Mud flap deletes
5
I’ve installed this finishing caps on my last 3 trucks. instillation is quick and easy with simple hand tools. The look is amazing really brings ground clearance up and the compliments are awesome!! Highly recommend this product for a easy, simple, clean look on any truck

Most Recent

Great fit.
5
They fit really well. I didn’t have to cut into the metal like some of the other companies require you to do which is very unnecessary. Go with SharpTruck. They’ll fit. 👍🏻
Fitment
3
Makes the truck look better but  The fitment wasn’t the greatest . It doesn’t line up 100%

Is there any cutting involved when installing these on the front fender?

- Johnny Aguilar on 10/26/2022

There is no cutting. They are 100% no drill and fasten directly to the truck using existing holes

- Admin on 10/26/2022

Is there any rubbing after removing the factory ones and installing these?

- Johnny Aguilar on 11/22/2022

That would depend on the size and offset of your wheels

- Admin on 11/25/2022

Do these work for DRW and also are they paintable?

- Derick on 2/13/2023

They will fit the front tires but not the rear. Yes they are paintable

- Admin on 2/14/2023

View all questions

Upgrade your 2020-2026 GMC Sierra 2500/3500HD with the Truck Hardware Sierra HD Finishing Caps, designed to provide a polished and complete look when the factory-installed OEM protectors are removed. This premium 6-piece set includes finishing caps for the front wheels, the front of the rear wheels, and the back of the rear wheels, ensuring that your truck maintains its original, sleek appearance while enhancing compatibility with Truck Hardware Gatorback mud flaps. Whether you're seeking a clean finish after removing the OEM splash guards or simply want to prepare your truck for upgraded mud flaps, these finishing caps are the perfect solution.

OEM Look and Compatibility

The Truck Hardware Sierra HD Finishing Caps are expertly crafted to seamlessly integrate with the lines of your GMC Sierra, preserving the OEM design and appearance of the vehicle. By completing the fender flare, these caps make sure your truck doesn't have any exposed or unfinished areas, which is especially important after the removal of the factory splash guards. They are compatible with Truck Hardware Gatorback mud flaps, making them an essential accessory for those looking to upgrade their mud protection while retaining the truck's original design elements.

These finishing caps are specifically designed to work without the need for drilling, ensuring a hassle-free installation. Unlike other caps, these finishing caps do not require any cutting of the truck and serve as a direct replacement. The caps fit flush against your truck's fender flares, providing a smooth and seamless transition that looks as though it came straight from the factory. With this high-quality finishing solution, you can achieve the look you desire without compromising the integrity of your vehicle.

Effortless Installation

Truck Hardware understands the importance of a simple, user-friendly installation. The Sierra HD Finishing Caps require no drilling, meaning they can be easily installed using standard tools that you likely have at home. The set is custom-designed for the GMC Sierra 2500/3500HD, which guarantees a perfect fit that is straightforward to install, allowing you to maintain your truck's sleek and finished appearance without any unnecessary effort.

Heavy-Duty Quality and Style

Made with the highest quality materials, the Truck Hardware Sierra HD Finishing Caps are designed to withstand tough environments while preserving their original look. These caps not only offer the practical benefit of eliminating the need for factory splash guards but also add to the overall aesthetic appeal of your truck. Designed to align perfectly with the vehicle's body, the finishing caps deliver an elevated, cohesive look, making them a must-have for truck enthusiasts who want to keep their vehicle looking pristine.

Key Features

  • Maintains OEM Appearance: Completes the fender flare when OEM protectors are removed, ensuring a seamless and factory-finished look.
  • Mud Flap Compatibility: Designed to allow for the easy installation of Truck Hardware Gatorback mud flaps, offering a great combination of form and function.
  • No-Drill Installation: No need for drilling, making installation easy and straightforward.
  • Custom Fit for Sierra 2500/3500HD: Specifically engineered for the 2020-2026 GMC Sierra 2500/3500HD, ensuring an ideal fit.

Product Care & Maintenance

To maintain the appearance and longevity of the finishing caps, simply clean them regularly with a mild soap and water solution. Avoid abrasive materials or harsh chemicals that could damage the surface. Rinse thoroughly and allow the caps to air dry for the best results. Routine care will help preserve their quality and ensure that they continue to look great on your truck.

Terms

  • OEM (Original Equipment Manufacturer): Parts produced by the original manufacturer of the vehicle, ensuring that replacement parts maintain the quality and compatibility expected from the brand.
  • Mud Flap Delete: Refers to the process of removing factory-installed splash guards or mud flaps, often to install higher-quality aftermarket solutions.
  • Fender Flare: A trim piece that surrounds the wheel well, providing extra coverage and protecting the vehicle from debris kicked up by the tires.
  • Finishing Caps: Custom-made caps designed to complete the look of a fender flare when certain parts, such as mud guards, are removed.

Warranty

Truck Hardware Sierra HD Finishing Caps are backed by a limited warranty, ensuring their quality and durability over time. The warranty covers material defects for the original owner, providing you with peace of mind and confidence in the product. However, the warranty does not cover damage resulting from misuse, abuse, or improper installation.

What’s Included

  • Six Truck Hardware Sierra HD Finishing Caps (Front Wheels, Front of Rear Wheels, Back of Rear Wheels)

For GMC Sierra HD owners who want to remove the OEM protectors without sacrificing style or finish, the Truck Hardware Sierra HD Finishing Caps are an essential accessory. Designed for effortless installation, these caps offer a clean, cohesive look while also enhancing compatibility with Gatorback mud flaps. Choose Truck Hardware Sierra HD Finishing Caps for a refined, finished look that will keep your truck looking its best.

Brand Gatorback by Truck Hardware
Length 6 inch(es)
Width 8 inch(es)
Height 4 inch(es)
Weight 4 lb(s)
UPC 785212958164

  • 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