Undercover FX21026 Tonneau Cover Flex 17-24 F250/350 8'2"
SKU: 97651064976

Undercover FX21026 Tonneau Cover Flex 17-24 F250/350 8'2"

Sale price$585.00 Regular price$650.00
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Ships within 48 hours · Estimated delivery Jul 8 - Jul 13

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Description

Undercover FX21026 Tonneau Cover Flex 17-24 F250/350 8'2"Product Description Introducing the next generation of folding covers the UnderCover Flex folding cover. Flex combines the best of both worlds, the security of a hard locking cover and convenience of a soft roll up cover. Constructed from the best materials available, Flex will withstand the abuse Mother Nature throws at it and keep coming back for more. Low Profile Ultra low profile design rests inside the bed rails allowing for a very sleek look.

Product Description

Introducing the next generation of folding covers -- the UnderCover Flex folding cover. Flex combines the best of both worlds, the security of a hard locking cover and convenience of a soft roll up cover. Constructed from the best materials available, Flex will withstand the abuse Mother Nature throws at it and keep coming back for more. Low Profile -- Ultra-low profile design rests inside the bed rails allowing for a very sleek look. Full Access -- Built in prop rods secure the cover allowing your truck to be driven with the cover fully open. Easy Removal -- Entire cover can be removed in seconds with no tools needed. Secure Design -- Plastic buckles and straps are included to secure the panels in the partially open position. FRP Composite Panels -- Lighter, stronger and higher dent resistance than aluminum. Weather Resistant -- Rubber seals and drain tubes channel water away from and out of the bed. Easy Clamp-on design. No other folding cover can match the Flex for versatility, security and function. Covered or uncovered, always an option with UnderCover.

Tonneau Cover; Flex; Hard Folding; 2 Folds/ 3 Panels; Front Hinge Allows Entire Tonneau to Flip Up When Folded; Non-Lockable; Black Semi-Gloss Textured; Black; Aluminum

Product Restrictions
OVERSIZED ITEM - Additional Freight Charges May Apply for 3rd Party Shipping.

Features & Benefits

    • Ultra Low Profile Design
    • Allows For Full Access To Your Bed
    • Built In Prop Rods Secure The Cover
    • Plastic Buckles And Straps Included
    • Rubber Seals And Drain Tubes Channel Water Away
    • Easy Clamp-on design and 3 Year Warranty

    Attributes

    • Type: Hard Folding
    • Folds/Panels: 2 Folds/ 3 Panels
    • Hinged At Front: Front Hinge Allows Entire Tonneau to Flip Up When Folded
    • Profile: Low Profile
    • Color Group: Black
    • Color/ Finish: Black Semi-Gloss Textured
    • Material: Aluminum
    • Locking Type: Non-Lockable
    • Compatible With Ladder Rack: Not Ladder Rack Compatible
    • Compatible With Headache Rack: Not Compatible With Headache Rack
    • Bed Side Rail Mount: Top Of Rail Mount
    • Tool Box Info: Not Compatible With Tool Box
    • With Lights: Not Applicable
    • Installation Type: Clamp-On
    • Drilling Required: Drilling Not Required
    • Additional Info1: Bed Rail Compatible, Bed Cap Compatible
    • Estimated Install Time (Hours): 1

    Additional Attributes:

    • GTIN: 840114300470
    • Finish: Textured Black
    • Works w/Toolbox: No
    • Style: Hard Folding Cover
    • Sits on Truck Rails: Yes
    • Rails To Install: Yes
    • Paintable: No
    • Material: Aluminum
    • Low Profile: Yes
    • Key Lockable: No
    • Install Time: 15 Minutes
    • Full Bed Access: Yes
    • Front Opening: Yes
    • Color: Black
    • Actual Color: Black

    Packaging:

    • Quantity of Each: 1
    • Package UOM: EA
    • Dimension: 30.000 x 80.000 x 7.500 inches

    Installation Instructions

    Warranties

    Shipping Notes
    • Free Standard Shipping on $100+ Orders to the USA.
    • Except Preorder products are shipped in 48 hours.
    • Delivery to the USA:
    1. Standard Shipping : 3-10 business days
    • If time is of the essence, please consider selecting expedited delivery for faster service.
    Exchange/Return Notes
    • We offer a 30-day return/exchange service after receiving.
    • Final sale items are not eligible for returns or exchanges.
    • To process your return/exchange, please contact us at [email protected]
    • Please click here for more details>>> Return & Exchange Policy
    SKU: 97651064976

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    4.6 ★★★★★
    Based on 800 reviews
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    D
    Verified Purchase
    Darren Gray
    Phoenix, US
    ★★★★★ 5
    Good value
    Model: NewSLS50_52, Model: NewSLS50_52
    Working perfectly. Install of stereo equipment and carpet left me wanting some heat and sound resistant materials.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on March 23, 2026
    T
    Verified Purchase
    Tharin
    Chelsea, US
    ★★★★★ 5
    BUY THIS ONE!
    Model: NewSLS50_52
    This is one of the good ones. There are other brands just as good, and manny brands are worse, but this handles well, rolls down easily, doesn't come off at all easily, and adapts to dips and curves like a champ. Appropriately heavy and dead, I'm happy with the way it smothers panel resonances and even at muffling direct sound, like a big hand over my Uncle Harry's eternally noisy mouth. You can rip the foil but you have to work hard at doing that. Remember to buy a brayer; you can roll overlaps nice and thin. Also remember to pre-wipe the sheet metal with a decent solvent like acetone or Stoddard/Varsol. It should last forever.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on April 26, 2025
    H
    Verified Purchase
    Harvey
    Birmingham, US
    ★★★★★ 5
    Good stuff, but watch the temp
    Model: NewSLS50_52
    I used this in my single cab pickup truck (89 ford.) It only took half the box (10 sheets or 25 square feet) to do the floors, but I bought the big box because I plan to do the doors, back wall, and maybe the roof as well. One thing I learned is that the temperature matters when you’re doing the installation. It was around 55F when I started in the evening, and when it dipped down into the 40s the sheets would not stick to the metal, and were hard to compress with the roller. That’s why I ended up only doing the floors and not any vertical surfaces; i will have to wait for a nice hot day. The other thing is that the foil layer on top is razor sharp at the edges, definitely wear gloves! I didn’t notice until after but I have little papercuts all over my fingers. Aside from those things, the install was easy and straightforward. The sheets cut easily with scissors, and any goo that ends up on your hands or scissors can be cleaned up with acetone (nail polish remover), or lacquer thinner. I would use this stuff again.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on November 16, 2023
    L
    Verified Purchase
    Lyrah
    Birmingham, US
    ★★★★★ 5
    Very efficient!
    Model: NewSLS50_52
    Amazing the difference it makes on dumping the noise. Very easy to install. Pell and stick literally! Great!
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on November 23, 2025
    J
    Verified Purchase
    Jak
    Lake Worth, US
    ★★★★★ 5
    Cost effective
    Style: 8.7 sqft(8 pcs), Material Type: Aluminum 197 mil
    Nice, cost effective material. It stuck nicely to the door and was fairly easy to use. The grid marks on the back made it easy to cut. I would not rank it up with other materials in sound and heat isolation, but it did cut down the overall vibrations on the door panels and I did not feel heat immediately from the floor area as i did with bare metal. If you are working with a budget and want modest improvement, this material will work well over most stock materials.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on June 7, 2026

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