BAKFlip F1 Vs. UnderCover Ultra Flex

Updated on May 5, 2025

RealTruck Expert Team
Written by
 RealTruck Expert Team
Frank Bisciotti
Edited by Frank Bisciotti
Man loading a tool into the back of a pickup truck in a warehouse.

Any tonneau cover offers a degree of protection and security for cargo in your truck bed, but not every tonneau is created equal. Hard folding tonneau covers are among the most secure and versatile designs available, and two of the most popular covers in this category are the BAKFlip F1 and UnderCover Ultra Flex. To help you choose the best tonneau cover for your truck, we compare these similar truck bed covers.


Shared Features

  • Hard Folding Tonneau Cover: The cover opens by unfolding toward your truck’s cab.

  • Locks With Your Tailgate: To secure your cargo simply close the cover then shut and lock your tailgate. The tailgate must be unlocked and opened to access the cover’s latch.

  • Weight Capacity: Up to 400 pounds of evenly distributed weight can be placed atop the cover.

  • Buckle Straps: The cover can be opened up to its final panel and secure in place with the included buckle straps.

  • Dual Action Tailgate: Seal The cover can be closed whether the tailgate is open or shut.

BAKFlip F1

Full Bed Access

A suitcase in an open trunk against a white background.

The cover folds up against your truck’s cab and can be locked in place with the included struts. It is safe to drive with the cover in this position.

Top Panels

Red pickup truck with a closed bed cover.

The F1’s top panels are made of a composite material called FRP (fiberglass reinforced polymer), which is highly resistant to dents, dings, and heat.

Lower Panels

Device for 3D printing filament with a black strap on textured surface.

The lower panels are made of powder-coated aluminum.

Finish

Treadmill with "3 BAKFIP" logo and textured running surface in black and red.

The cover has a gloss-black finish.

Accessories

Close-up of a red and black electronic device with a small port or opening, possibly a gaming console.

The cover leaves your stake hole pockets exposed, allowing you to install accessories such as bull rings and bed rails.

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UnderCover Ultra Flex

Full Bed Access

Silver pickup truck with black windows and an open flatbed.

The cover folds straight up at a 90-degree angle and can be locked in place with the included struts. It is safe to drive with the cover in this position.

Top Panels

White pickup truck with a black tonneau cover on the bed

The Ultra Flex’s top panels are made of durable, corrosion-resistant aluminum.

Lower Panels

Close-up of a sliding window with a textured gray felt panel and metal latch.

The lower aluminum panels are lined with a soft but durable carpet-like material.

Finish

Close-up of a black electronic device with "ULTRA FLEX" and "HFE" stickers on it.

The cover has a matte-black finish.

Accessories

Close-up of a sliding rail and motor mechanism inside a vehicle trunk.

The cover leaves your stake hole pockets exposed so you can install items such as bull rings and bed rails. It also included an integrated bed light.

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If you have questions about these or any other tonneau covers, get in touch with our product experts.

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