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  • Hard Folding Tonneau Cover for Silverado Sierra HD – Ultra Flex 20–25 6ft 10in Matte Black ABS
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Hard Folding Tonneau Cover for Silverado Sierra HD – Ultra Flex 20–25 6ft 10in Matte Black ABS

Undercover
UNDUX12024
In stock
Bed Covers - Folding
$1,253.67 $1,199.99
Upgrade your truck with a hard folding tonneau cover for Silverado Sierra HD that delivers strength,...
$1,199.99
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Hard Folding Tonneau Cover for Silverado Sierra HD – Ultra Flex 20–25 6ft 10in Matte Black ABS
Description

Upgrade your truck with a hard folding tonneau cover for Silverado Sierra HD that delivers strength, style, and convenience. The Ultra Flex 20–25 6ft 10in cover is designed for 2020–2025 Chevrolet Silverado and GMC Sierra 2500HD/3500HD models, offering a perfect fit and rugged protection.

Made from high-strength ABS, this hard folding tonneau cover provides full bed access with a fold-up design that makes loading and unloading easy. The matte black finish adds a bold, refined look while resisting wear and tear. With a standard profile and no drilling required, installation takes just 15 minutes and mounts directly on your truck rails.

It’s not lockable, but it’s built to keep your cargo protected from weather and prying eyes. Whether you're hauling tools, gear, or weekend essentials, this cover is a reliable upgrade for HD truck owners who want performance and style.


Features and Benefits

Hard Folding ABS Design – Durable and weather-resistant for long-term protection Full Bed Access – Fold-up operation allows complete access when needed Matte Black Finish – Adds rugged appeal and resists scratches Quick Install – No drilling required; mounts in just 15 minutes Sits on Truck Rails – Stable and flush-mounted for a clean appearance Specific Fit for 2020–2025 Silverado/Sierra HD – Designed for 6ft 10in beds on 2500HD and 3500HD models


Built for Everyday Utility

Whether you're commuting through Dallas or hauling gear in the Rockies, this hard folding tonneau cover for Silverado Sierra HD keeps your cargo secure and your truck looking sharp. It’s built to match your lifestyle—on and off the road.


Specifications

Feature Detail
Part Number undUX12024
Fitment 2020–2025 Silverado/Sierra 2500HD/3500HD
Bed Length 6ft 10in
Material ABS
Finish Matte Black
Install Time 15 Minutes
Drilling Required No
Full Bed Access Yes
Front Opening No
Lockable No
Toolbox Compatible No
Mounting Hardware Included
Operation Fold-Up
Paintable No
Prop 65 Warning Yes – Cancer and Reproductive Harm


Installation Instructions
Installation Instructions


This Part Fits:

 

Year Make Model Submodel
2020-2025 Chevrolet Silverado 2500 HD Custom
2020-2025 Chevrolet Silverado 2500 HD High Country
2020-2025 Chevrolet Silverado 2500 HD LT
2020-2025 Chevrolet Silverado 2500 HD LTZ
2020-2025 Chevrolet Silverado 2500 HD WT
2024-2025 Chevrolet Silverado 2500 HD ZR2
2020-2025 Chevrolet Silverado 3500 HD High Country
2020-2025 Chevrolet Silverado 3500 HD LT
2020-2025 Chevrolet Silverado 3500 HD LTZ
2020-2025 Chevrolet Silverado 3500 HD WT
2020-2025 GMC Sierra 2500 HD AT4
2024-2025 GMC Sierra 2500 HD AT4X
2020-2021 GMC Sierra 2500 HD Base
2020-2025 GMC Sierra 2500 HD Denali
2024-2025 GMC Sierra 2500 HD Denali Ultimate
2022-2025 GMC Sierra 2500 HD Pro
2020-2025 GMC Sierra 2500 HD SLE
2020-2025 GMC Sierra 2500 HD SLT
2020-2025 GMC Sierra 3500 HD AT4
2020-2021 GMC Sierra 3500 HD Base
2020-2025 GMC Sierra 3500 HD Denali
2024-2025 GMC Sierra 3500 HD Denali Ultimate
2022-2025 GMC Sierra 3500 HD Pro
2020-2025 GMC Sierra 3500 HD SLE
2020-2025 GMC Sierra 3500 HD SLT

REVIEWS

DL

This cover fits my Silverado HD perfectly. It looks clean, installs fast, and gives me full access to the bed. No rattles, no leaks—just solid performance.

Derek L.

San Antonio, TX

★★★★★
KM

I’ve had this on my Sierra 3500 for months and it’s been awesome. The matte black finish still looks brand new and the fold-up design is super convenient.

Kelsey M.

Reno, NV

★★★★★
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Effective Date: October 2024
We offer a 30-day return policy, allowing you to request a return within 30 days of receiving your item. To qualify for a return, the item must be in its original condition—unused, with tags, and in its original packaging. A receipt or proof of purchase is also required.

To initiate a return, please contact us at info@riotparts.com. Returns must be shipped to the address provided upon request. If your return is approved, we will issue a return shipping label along with detailed instructions.

Important
Returns sent without prior authorization will not be accepted.

For any return-related inquiries, please reach out to us at info@riotparts.com.

Return Shipping Address
The return shipping address will be determined based on the requestor’s location to ensure the nearest return facility is used.

Possible return locations include:
• 10880 Lear Blvd.
Reno, NV 89506, United States
• 931 W. Bardin Rd., Suite 150–200
Arlington, TX 76017, United States
• 3035 Campus Dr.
Hatfield, PA 19440, United States
• 5789 N. Graham Road, Ste 200
Whiteland, IN 46184, United States
• 2020 NE Aloclek Dr 4711 N Lamon Ave
#118 STE 12, Hillsboro, OR 97124, United States

Damages and Issues
We recommend inspecting your order upon receipt. If you find that an item is defective, damaged, or if you received the wrong item, please contact us immediately so we can address the issue.

Exceptions / Non-Returnable Items
Certain items cannot be returned, including:
• Electrical parts that have been installed or used
• Special order parts that were custom ordered for you
• Items that have been damaged due to improper installation or use

If you have questions or concerns about a specific item, please contact us for assistance.

Exchanges
For exchanges, the quickest option is to return the item you have. Once the return is accepted, you can make a separate purchase for the new item.

Refunds
We will notify you once we receive and inspect your return to inform you whether your refund is approved. If approved, you will be automatically refunded using your original payment method within 10 business days. Please be aware that it may take additional time for your bank or credit card company to process and post the refund.

If more than 15 business days have passed since your return was approved and you haven’t received your refund, please contact us at info@riotparts.com.

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