The Lowest Price Perfect Fit Guarantee

Our #1 value is customer service.

We believe in doing right by our customers, no matter what it takes.

In keeping with that, we offer a “perfect fit guarantee” that ensures your satisfaction on 3 levels: low price, free shipping, and perfect fitment.

- Alan Marek, Founder of

The Lowest Price Anywhere--Guaranteed

At PartCatalog, we’ll beat any competing vendor’s price. And we’re so confident in our rock-bottom prices that we’ll refund the difference if you find a lower price elsewhere.

Free Shipping

Our “free shipping” policy means that orders ship free of charge. When you place an order, you pay only the list price and any applicable taxes. We cover the shipping to save you money and ensure timely delivery.

100% Guaranteed to Fit

In the highly unlikely event of a fitment problem, we’ll return your purchase at no cost to you. We pay return shipping on all orders, so it won’t cost you a penny to send back a defective part.

UnderCover Flex Folding Tonneau Cover

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Sale Price: $869.00 - $909.80
Sale Price: $869.00 - $909.80

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Lowest Price Guaranteed. Free Shipping Both Ways.

The most water-tight folding tonneau cover on the market

The UnderCover Flex Tonneau Cover is a hard-folding, extremely water-tight truck bed cover. It can be drive in 3 riding positions - fully open, 3/4 bed access and full bed access with the cover propped for maximum storage. Prop rods secure the truck bed cover so that it can be driven with it fully propped open.

The Flex panels' SLAM Latches automatically latch to the cover's mounting rails, making it extremely easy to operate from either side of your truck bed.

Water-tight seal keeps water away

The tonneau cover is fully fit with rubber seals around the perimeter of the cover to keep rain, moisture and snow from entering the cargo area.

It also features drain tubes which will carry moisture out and away from your truck bed to keep your cargo and gear dry and secure.

Quick and easy installation

The installation of the Flex Tonneau Cover is quick and easy - it features a no-drill installation. It is easy to attach or remove the bed cover without any tools needed.

The secure design uses the SLAM Latch system to secure your belongings safely in your truck bed.

Order a UnderCover Flex Tonneau Cover today for fast and free shipping!

This product comes with the manufacturer’s 3 year warranty.

The following part numbers are available in this product line:

    • FX11000
    • FX11001
    • FX11002
    • FX11003
    • FX11004
    • FX11005
    • FX11006
    • FX11007
    • FX11008
    • FX11009
    • FX11012
    • FX11013
    • FX11018
    • FX11019
    • FX21000
    • FX21002
    • FX21004
    • FX21007
    • FX21010
    • FX21012
    • FX21019
    • FX21020
    • FX31000
    • FX31001
    • FX31002
    • FX31004
    • FX31006
    • FX41002
    • FX41003
    • FX41007
    • FX41008
    • FX41009
    • FX41010
    • FX51003
    • FX51004
    • FX51005
    • FX51006
    • FX51009
    • FX51010
    • FX51011
    • FX51012
    • FX61001
    • FX61002
    • FX71000
    • FX41014
    • FX41015
    • FX41016
    • FX51016

To purchase this product for your vehicle, please select the Year, Make and Model of your vehicle at the top of this page.

Chevrolet (1999-2018)

Colorado, Silverado 1500, Silverado 1500 Classic, Silverado 2500, Silverado 2500 HD, Silverado 3500 HD

Dodge (1995-2010)

Dakota, Ram 1500, Ram 2500, Ram 3500

Ford (1994-2018)

F-150, F-150 Heritage, F-250 Super Duty, F-350 Super Duty, Ranger

GMC (1999-2018)

Canyon, Sierra 1500, Sierra 1500 Classic, Sierra 2500, Sierra 2500 HD, Sierra 3500 HD

Honda (2017-2018)


Lincoln (2006-2008)

Mark LT

Mazda (1994-2009)

B2300, B2500, B3000, B4000

Mitsubishi (2006-2009)


Nissan (2004-2018)

Frontier, Titan, Titan XD

Ram (2011-2018)

1500, 2500, 3500, Dakota

Suzuki (2009-2012)


Toyota (2005-2018)

Tacoma, Tundra

1 Customer Reviews

All reviews are from actual, verified customers. We will invite you to leave your own review a few days after receiving your order.

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