UltimateFlap Dually Mud Flaps

1999 Ford F-550 UltimateFlap Dually Mud Flaps

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Exact Fit


At Ultimate Truck, we know a Dually truck needs a solid, dependable mud flap, not only to protect your truck, but everything you haul.

After years of selling other brands, Ultimate Truck decided to build a better mud flap and offer it to our customers. We back every set of UltimateFlap Dually Mud Flaps with a lifetime guarantee not to bend, chip or break. UltimateFlap Dually Mud Flaps are made from a premium material that is nearly indestructible, extreme weather tested, and will not sail up while you travel down the road. UltimateFlap Mud Flaps have an anti-spray design to direct rain, snow, road debris back down towards the road and away from your vehicle.

UltimateFlap Dully Mud Flaps are semi custom, drilling will be required. Every set of UltimateFlap Mud Flaps come complete with easy to follow instructions and rust proof stainless steel weights and hardware.

1.  Patented anti-spray and anti-sail design
2.  Highest quality 304 mirror stainless steel weights
3.  Made In the USA
4.  Stainless steel hardware
5.  Easy to install

Manufacturer Info

Anywhere you go, UltimateFlap Mud Flaps protect your vehicle against whatever the road throws at it!  Extreme weather tested against cold and heat, Ultimate Truck’s UltimateFlaps are made from nearly indestructible, semi-rigid polyethylene, which won’t sail like rubber flaps, won’t kink or bend like metal flaps, and offer greater protection than molded flaps. Don’t worry about driving over rocks, logs, or curbs. UltimateFlaps flex, then pop back into place. Also, you’ll keep more mud and water off your truck, your trailer, and other vehicles with UltimateFlaps. Our patented grooved channels direct mud, snow, rain, and spray down and away from your vehicle.

With our semi-custom design, and easy-to-follow instructions, UltimateFlap Mud Flaps quickly and simply improve the protection of your Chrysler/Dodge, Ford, Chevy/GMC, Nissan, Toyota, or just about any other truck or SUV. Even better, you can get the most coverage for YOUR vehicle by installing your flaps to best match your wheel and tires, as well as your road and driving conditions.

Add style and function to your vehicle, while knowing your flaps will look great year after year. UltimateFlap Mud Flaps are built to last, made with pride in the USA, out of premium materials. We use mirror-finish T304 stainless trim plates, as well as stainless mounting hardware which won’t rust, break, or fall off.

UltimateFlap Mud Flaps let you use your truck like a truck! Go camping, go hunting—get it dirty! Test our flaps and see for yourself how you’ve purchased the best mud flap you’ll ever own. With our industry-leading tear off warranty, we offer a free replacement flap if you manage to tear yours off within one year of purchase.

For more information about our products, or for custom sizing options, please contact us by phone at 877.921.1531, or by email at sales@ultimatetruck.com.

UltimateFlap Care and Warranty Instructions

UltimateFlap Installation Instructions


UltimateFlap Dually Mud Flaps fits the following vehicle(s):