Hard Folding Tonneau Cover for Silverado Sierra HD – Armor Flex 20–25 6ft 10in Matte Black Aluminum
Technical Data
Protect your truck bed with a hard folding tonneau cover for Silverado Sierra HD that’s built for heavy-duty performance. The Armor Flex 20–25 6ft 10in cover is engineered for 2020–2025 Chevrolet Silverado and GMC Sierra 2500HD/3500HD models, offering a precise fit and rugged protection.
Crafted from durable aluminum, this hard folding tonneau cover features a low-profile design and a matte black finish that adds a bold, refined look to your truck. With full bed access and a fold-up operation, it’s ideal for hauling tools, equipment, or weekend gear. The flush fit enhances aerodynamics while keeping your cargo secure from the elements.
Installation is straightforward and requires no drilling, taking approximately 45 minutes. It’s not lockable, but it’s built to withstand tough conditions and keep your gear protected. Whether you're working on the job site or heading off-road, this cover delivers the durability and style your HD truck deserves.
Features and Benefits
Hard Folding Aluminum Design – Built tough to withstand harsh conditions and daily use Full Bed Access – Fold-up panels allow complete access when needed Low Profile Style – Sits flush for a sleek, aerodynamic appearance Matte Black Finish – Resists scratches and adds rugged appeal Quick Install – No drilling required; installs in about 45 minutes Specific Fit for 2020–2025 Silverado/Sierra HD – Designed for 6ft 10in beds on 2500HD and 3500HD models
Built for Real-World Demands
From hauling heavy loads in Houston to weekend trails in Montana, this hard folding tonneau cover for Silverado Sierra HD is built to handle whatever life throws at it. It’s the kind of upgrade that works hard, looks sharp, and keeps your cargo secure.
Specifications
| Feature | Detail |
|---|---|
| Part Number | undAX12024 |
| Fitment | 2020–2025 Silverado/Sierra 2500HD/3500HD |
| Bed Length | 6ft 10in |
| Material | Aluminum |
| Finish | Matte Black |
| Install Time | 45 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
This Armor Flex cover is exactly what my Silverado HD needed. It looks clean, installs fast, and gives me full access to the bed. No rattles, no leaks—just solid performance.
James W.
Billings, MT
I’ve had this on my Sierra 3500 for months and it’s held up through rain, snow, and heat. Super easy to use and the matte black finish still looks brand new.
Karen H.
Spokane, WA
Specifications
Fitment Data
• Engineered for precision compatibility with high-performance builds.
• Tested under extreme mechanical stress for guaranteed structural integrity.
Use the Riot Vehicle Finder to verify exact sub-model compatibility.
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