UnderCover Ultra Flex Tonneau Cover

$1,199.99 - $1,249.99
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Ultra Finished Under Panel
A refined, yet Ultra tough carpet-like finish gives the Ultra Flex a look and feel far beyond OE Standards.
Ultra Easy Close Tailgate Seal
Shut your tailgate with ease without ever having to lift that last panel.
Full Bed Access
Built in prop rods secure the cover allowing your truck to be driven with the cover fully open.
Slam Latches
Ultra Flex panels automatically latch to the covers mountings rails, making it simple to operate from either side of your truck.
Redesigned Rails
The Ultra Flex is an easy clamp-on application that can be installed and removed easily with the newly designed L-Rail's.
Weather Resistant
Rubber seals and a tight, flush fit prevent elements from entering the bed, while high quality drain tubes channel water out that may have entered.
  • Premium hard-folding tonneau cover
  • Easy-to-use tri-fold design
  • Durable yet lightweight aluminum-skinned panels
  • Alluring matte-black smooth finish
  • Flush, low-profile design
  • Carpeted under panels
  • Integrated prop rods allow full bed access while driving
  • EPDM rubber hinges, perimeter seals, and dual-action tailgate seal
  • Integrated drain channels and tubes
  • Simple no-drill installation with clamp-on L-Rail system
  • Automatic slam latches
  • 400-lb. weight capacity (evenly-distributed)
  • 5-year warranty

The Ultra Flex Tonneau Cover from UnderCover® and RealTruck® resides in a league of its own. The premium, hard folding truck bed cover offers an overwhelming feature list. From the irresistible outward appearance to each component beneath the cover, the carefully crafted Ultra Flex is the ultimate all-purpose truck bed cover.

This high-end, hard-folding tonneau cover is manufactured from only the best materials, including matte-black-coated aluminum top panels and L-Rails. The rigid yet lightweight aluminum panel construction can withstand up to 400 pounds of evenly distributed weight. This truck bed cover is also highly durable and theft-proof—with the tailgate locked, your cargo in the bed is safer than if it were in the cab.

The UnderCover Ultra Flex Tonneau Cover is as resistant to inclement weather as it is to theft. UnderCover utilizes a sleek, low-profile design with automatic slam latches, pressing the cover tightly against the integrated EPDM rubber perimeter seals and dual-action tailgate seal to keep water out.

Operating the UnderCover Ultra Flex Tonneau Cover is quick and easy. To release the cover, drop the tailgate, pull the latches near the rear of the bed, and fold it toward the bulkhead. You can either secure the cover in the ⅔ open position using the integrated safety straps or fold it flat against the rear window and support it upright with the built-in prop rods, offering full bed access.

Closing the cover is just as easy—simply fold it back toward the tailgate as the cover’s innovative slam latches automatically engage, locking each panel into the redesigned L-Rails. The cover’s dual-action tailgate seal allows you to operate the tailgate whether the tonneau cover is opened or closed.

UnderCover is a RealTruck brand. When you order this tonneau cover or any other UnderCover product from us, you’re dealing directly with the manufacturer. We back each UnderCover Ultra Flex Tonneau Cover with a 5-year warranty against manufacturing and material defects.

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Spec Sheet
FinishMatte Black
Warranty5 Year Limited Warranty
California Residents: Prop 65 Warning


The UnderCover Ultra Flex Tonneau Cover features a simple clamp-on installation using the innovative L-Rail system. Each order includes all hardware and vehicle-specific mounting instructions for an intuitive installation in an hour or less.

For additional information, contact the experts and check out our video installation guide.

Install Video UnderCover Ultra Flex Tonneau Cover 2017 Ford Raptor


UnderCover, Inc. warrants the structure of your cover to be structurally free from defects in material and workmanship for (5) five years from the retail date of purchase. The hinges, seals, and hardware are warranted to be free from defects in material and workmanship for (5) five years from the retail date of purchase. This warranty applies only to the original purchaser and is nontransferable. Your original sales receipt will serve as proof of purchase for this warranty. Before credit can be issued on a warranty claim, proof of defect may be required. This can be determined at the time of the claim.

Not covered under this warranty is failure due to neglect, improper installation including any modifications to installation hardware, alterations, addition of equipment, abuse, accident, weather-related damage, exposure to chemicals that are not labeled "safe for rubber" and normal wear from lack of maintenance.

Always read the ingredients of any product you are using to clean your Flex Cover. Make sure that you use only products that are safe for use with rubber. Many chemicals contain material that will permanently discolor or damage your Flex Cover hinges and seals. This is not considered a manufacturer defect.

Incidental or consequential damage or loss of contents due to use, neglect, lack of maintenance, misuse or abuse of the Flex Cover is the sole responsibility of the truck owner and operator. Paint damage to your truck is not covered under this warranty. When operating your truck always keep the Flex Cover in either the fully closed and latched position, or one of the two approved open positions. The first approved open position would be the first, second, and third panel stacked onto the forth panel and the buckles must be secured together. The second approved open position would be all four panels standing up vertically behind the cab. In this position both prop rods must be attached and the buckles secured. Do not operate the truck at excessive speeds with the Flex Cover in either open position.

In the event that your Flex Cover is found to be defective under the terms of this warranty, it is at the discretion of UnderCover, Inc. to repair or replace the defective part. All repairs must be made under the direction of UnderCover Inc. UnderCover Inc. is not responsible for any transportation costs associated with the warranted claim.

The panels of your Flex Cover require only periodic cleaning with mild car wash soap. Avoid use of all abrasive type cleaners as they may dull the finish. Some chemicals and fluids such as insect repellents, oils, solvents, and lubricants could potentially damage the rubber hinges and seals and void the warranty.