The Truck Hardware Gatorback Black Plate Mud Flaps rear dually pair combines serious protection with a sleek black anodized aluminum plate for 2023-2027 Ford F-350 and F-450 Super Duty dual rear wheel (dually) trucks. Gatorback is a premium mud flap built to a higher standard than typical aftermarket flaps, and it shows the moment you pick one up. Each flap is almost a 1/2" thick virgin rubber, mounted with custom fit brackets made for your exact truck, and backed by a lifetime warranty on the rubber. The result is a flap that hangs straight, stays put at highway speed, and keeps doing its job for the life of your truck.

These extra-wide 21" dually flaps protect your truck from rocks, mud, gravel, snow and road debris, so you will see your truck staying cleaner longer, less junk on your step bars, and fewer rock chips in the paint. The black plate gives your truck a sleek, aggressive, blacked-out look that stands out on and off the road. Gatorback flaps are some of the highest quality, heaviest duty mud guards in the industry, they are test fit on every model year by Ford Accessories, and they are proudly made in Canada. If you are looking for mud flaps you buy once and never think about again, this is them.

Key Features

• Heavy-duty 1/2" thick virgin rubber - Many aftermarket flaps use thinner, recycled rubber that can curl, sag or tear over time. Gatorbacks use thick, premium virgin rubber that stays strong and flexible through heat, cold, rocks and gravel for years of reliable protection.
• Black anodized aluminum plates - Lightweight, sturdy aluminum with a black anodized coating adds a sleek, blacked-out look and extra corrosion resistance.
• Custom fit, no drilling - Custom fit brackets and hardware made for the 2023-2027 F-350 and F-450 dually are included, and Ford Accessories test fits the flaps on each model year, so you get a precise, factory-quality fit with no holes drilled in your truck.
• Lifetime rubber warranty - If a flap comes off the truck or is damaged from normal wear and tear, Gatorback sends replacement rubber at no charge for as long as you own the truck.

Which Gatorback Is Right for Your Truck?

Gatorback mud flaps for the 2023-2027 Super Duty come in several versions. Use this quick guide to make sure you pick the right one:

• Rear pair or complete set - This listing is the rear dually pair only (2 flaps). Add a front pair for front wheel coverage. F-350 dually owners can also choose a complete dually set of 4, and F-450 owners can choose a complete F-450 set of 4.
• Single rear wheel vs. dually - This listing is for dual rear wheel (DRW) trucks, with extra-wide 21" rear flaps to cover both rear wheels. Single rear wheel (SRW) trucks need the standard 12" rear flaps.
• Lifted trucks or oversized tires - Running a single rear wheel Tremor, a lift or level kit, or oversized tires? Look at Gatorback Offset mud flaps, which use 1.5" offset nylon kickback brackets for extra tire clearance.
• Choosing a style - This version is the black anodized aluminum plate style. This rear dually pair is also available in: plain rubber (no plate), stainless steel plate, black Ford oval, blue Ford oval, FX4, 6.7L Power Stroke, Platinum, Super Duty, black anodized Ford oval, black anodized Super Duty, American flag, black American flag, black wrap Ford oval, F-350, gunmetal plate, black wrap FX4 and gunmetal Ford oval.

Features and Benefits

These flaps are made from heavy-duty, 1/2" thick virgin rubber, a high-quality, unrefined rubber that offers better strength, flexibility and wear resistance than recycled rubber. Each extra-wide 21" rear dually flap weighs 10 lbs, so the flaps stay in place instead of sailing at highway speed. These flaps are an extra-wide 21" to cover both dual rear wheels, with 11" of tire coverage from the bottom of the fender to the bottom of the flap. The 1/2" thick rubber keeps debris from passing through, so your truck stays cleaner longer with less damage to the body and step bars, and any trailer you are towing and other road users are better protected from kicked-up debris.

Each flap carries a black anodized aluminum plate. The anodized coating gives the plate a sleek, blacked-out finish and enhanced corrosion resistance, while the aluminum keeps it lightweight yet sturdy. The plate measures 17 1/4" x 5". To keep that finish looking its best, follow the anodized aluminum care guide below.

Fit is built in. Gatorback flaps are designed specifically for the 2023-2027 Ford F-350 and F-450 Super Duty dually, including XL, XLT, Lariat, King Ranch, Platinum and Limited trims, and Ford Accessories test fits the flaps on each model year to confirm fitment. The flaps mount to your truck's factory mounting locations with no body drilling, so your truck's body stays untouched and your resale value is protected. They also install flush to the inside of the wheel well, so they work alongside step bars, power boards and side steps without getting in the way. Gatorback mud flaps are proudly made in Canada.

Installation

Installation is simple, with no body drilling required. The flaps mount to your truck's factory existing mounting locations, and the custom fit brackets and hardware you need for a solid installation are included. Installation can be done with tools you already have at home and takes about 15 minutes per flap. The flaps install flush to the inside of the wheel well for a clean, factory look. Install videos and installation instructions are available so you can see the full process step by step before you start.

What's Included

• (2) Gatorback Black Plate 21" wide rear dually mud flaps (1 driver side, 1 passenger side)
• Custom fit brackets and mounting hardware for the 2023-2027 Ford F-350 and F-450 dually

Care & Maintenance

• Clean the rubber with a mild soap and water solution. Regular cleaning helps keep the rubber flexible and extends the life of the flaps.
• Avoid harsh chemicals and petroleum-based cleaners, which can break down rubber over time.
• Rinse thoroughly and let the flaps air dry for best results.
• Clean the anodized aluminum plates with a soft cloth and a non-abrasive, pH-neutral cleaner, and avoid harsh chemicals or abrasive materials that could damage the finish. Follow the full anodized aluminum care guide below, including the important notes about touch-free car washes.
• Check the mounting hardware periodically and retighten if needed, especially after off-road or rough-road driving.

Anodized Aluminum Plate Care

Anodized aluminum is a durable, corrosion-resistant material featuring a specialized coating that enhances protection against rust while providing an attractive finish. To preserve its appearance and functionality, appropriate cleaning methods are essential. Incorrect cleaning practices may compromise the coating, resulting in fading or pitting. This guide provides detailed instructions on maintenance, including routine procedures, advanced cleaning techniques, precautions, and considerations regarding touch-free car washes.

Routine Cleaning and Preventive Maintenance

Regular cleaning is necessary to prevent the accumulation of contaminants that could impair the surface. Employ non-abrasive methods to safeguard the thin protective layer.

• Frequency: Perform cleaning every 3 months, or more frequently in environments with high pollution, proximity to coastal areas (where salt may accelerate corrosion), or high usage.
• Basic Method:
  • Begin by rinsing with plain water to remove loose debris. Utilize a soft sponge or cloth for gentle wiping.
  • For minor soiling, prepare a solution of mild, pH-neutral soap (such as dish detergent) with warm water. Apply using a soft cloth, employing circular motions without excessive force.
  • Rinse thoroughly with clean water to eliminate any residue.
  • Dry the surface promptly with a soft towel to avoid water spots.
• Tools: Select non-abrasive items such as soft-bristle brushes or cloths. Avoid steel wool or abrasive pads, as they may scratch and damage the coating.
• Preventive Measures:
  • Apply a suitable protective wax or sealant designed for anodized aluminum following cleaning (e.g., automotive-grade waxes for vehicle parts).
  • In urban or industrial settings, monitor for acidic precipitation or organic deposits, which may etch the surface if not addressed promptly.
  • Store items indoors when feasible to mitigate ultraviolet fading of colored finishes.

Deep Cleaning for Persistent Contaminants

For significant buildup, such as oxidation or embedded grime, employ more intensive yet cautious approaches. Always test methods on an inconspicuous area first.

• Mild Abrasive Methods: Form a paste with baking soda and water for gentle application with a soft cloth, followed by thorough rinsing. For oxidized sections, use fine-grit sandpaper (600-1000) lightly with water and polish afterward, though this should be infrequent to prevent thinning the coating.
• Commercial Products: Select cleaners formulated for anodized aluminum with a neutral pH. Citrus-based options are suitable; refrain from using unverified household cleaners.

Practices to Avoid

Anodized aluminum is susceptible to substances that may dissolve or abrade its protective oxide layer.

• Harsh Chemicals: Refrain from using strong acids (e.g., hydrochloric or phosphoric) or alkalis (e.g., sodium hydroxide), as they may cause etching, discoloration, or removal of the finish.
• Abrasive Tools: Avoid vigorous scrubbing implements or polishes that could dull the surface and expose the base metal.
• High-Pressure Washing: While suitable for initial rinsing, limit pressure to under 1,000 PSI to prevent intrusion into seams.
• Environmental Exposures: Minimize contact with chlorine, fluoride, or heavy metals, which may induce pitting.

Impact of Touch-Free Car Washes on Anodized Aluminum

Touch-free car washes offer convenience and minimize paint scratches by employing high-pressure jets and chemical applications without physical contact. However, they may adversely affect anodized aluminum elements, such as trim or wheels, owing to the intensity of the processes and chemicals.

• Potential Damage: These systems frequently utilize high-pH alkaline detergents and acidic pre-treatments that can interact with the coating, leading to discoloration, dulling, etching, or fading. Alkaline agents are particularly detrimental, potentially dissolving the layer and resulting in a chalky or pitted appearance. Repeated use may exacerbate issues, especially on colored anodizing, causing inconsistent hues or loss of gloss.
• Risk Factors: The absence of mechanical brushing necessitates more potent chemicals and elevated pressures (up to 1,500 PSI), which may infiltrate seals or aggravate minor imperfections. Although generally compatible with standard automotive paint, these washes can deplete protective sealants on anodized components more rapidly.
• Recommendations: Avoid touch-free car washes for items featuring anodized aluminum whenever possible, particularly those with high-alkaline formulations. Prefer manual washing with pH-neutral solutions. If utilization is necessary (e.g., for seasonal salt removal), rinse affected areas thoroughly afterward and apply a protective coating. Verify the chemical composition of the wash or conduct a test on a small section if gentler options are claimed.

Common Harsh Chemicals in Touch-Free Car Washes

Touch-free systems depend on robust chemical blends for effective cleaning without contact. These typically include:

• Alkaline Detergents: High-pH (9-14) compounds such as sodium hydroxide or potassium hydroxide, which emulsify oils and grime but may etch anodized aluminum by eroding the oxide layer.
• Acidic Pre-Treatments: Low-pH (2-5) solutions incorporating hydrofluoric acid, phosphoric acid, or citric acid to dissolve mineral deposits and salts. These can induce pitting or discoloration if not adequately neutralized.
• Surfactants and Solvents: Components like volatile organic compounds (VOCs), glycol ethers, or petroleum distillates that facilitate cleaning but may include irritants capable of degrading seals and finishes over time.
• Additional Agents: Chelating compounds, foam enhancers, or corrosion inhibitors intended for protection, yet potentially abrasive in elevated concentrations. Multi-step processes alternating acidic and alkaline applications heighten risks for sensitive materials such as anodized aluminum.

These formulations prioritize efficiency and compatibility with paint, rendering them less ideal for specialized coatings like anodized aluminum.

Effective maintenance of anodized aluminum requires consistent application of gentle, neutral cleaning agents to prolong its durability and preserve its attributes. By eschewing aggressive chemicals and abrasive techniques, irreversible damage can be averted. Although touch-free car washes provide convenience, their dependence on potent alkaline and acidic substances presents notable risks to anodized surfaces, potentially causing discoloration or deterioration; manual methods are preferable where feasible. In the event of damage, seek professional assistance for restoration. Adhering to these recommendations will ensure the material retains its optimal condition for an extended period.

Warranty

Gatorback mud flaps are backed by a limited lifetime warranty on the rubber portion of the flap only. This warranty covers rubber replacement (for example, tear-offs) for the lifetime of the product to the original owner. If a flap comes off the truck or is damaged due to normal wear and tear, let us know and we will send you a replacement piece of rubber at no charge.

Plates, brackets and mounting hardware are not covered by the warranty. The warranty also does not cover damage caused by misuse, abuse or improper installation. To start a warranty claim, please provide product photos and proof of purchase.

Terms to Know

• Virgin rubber - High-quality rubber in its original, unrefined state, which is stronger and more durable than recycled rubber.
• No-drill installation - Mounting that uses your truck's factory mounting points, so no holes are drilled in the body.
• Tire coverage - How far the flap extends below the fender (11" on these rear dually flaps). More coverage means more protection.
• Sailing - When a lightweight flap lifts and flaps at speed. The 10 lb rear dually flaps keep Gatorbacks from sailing.
• SRW / DRW - Single rear wheel and dual rear wheel (dually) trucks. These flaps fit DRW (dually) trucks.
• Anodized aluminum - Aluminum treated with an anodized coating for a durable, corrosion-resistant finish that stays lightweight and sleek.

Specs at a Glance

• Brand: Truck Hardware Gatorback
• Part Number: GCR413R-AA
• Position: Rear dually pair (driver and passenger)
• Fitment: 2023-2027 Ford F-350/F-450 Super Duty, dual rear wheel (dually)
• Trims: XL, XLT, Lariat, King Ranch, Platinum and Limited
• Style: Black anodized aluminum plates for a sleek, blacked-out look
• Plate: Black anodized aluminum, 17 1/4" x 5"
• Flap Width: 21"
• Rubber Thickness: 1/2" virgin rubber
• Rear Flap Weight: 10 lbs each
• Tire Coverage: 11" from fender to bottom of flap
• Installation: No body drilling, custom fit brackets and hardware included, about 15 minutes per flap
• Made In: Canada
• Warranty: Limited lifetime, rubber only (plates, brackets and hardware not covered)