2019-2025
2014-2018
2007-2013
1999-2006
Installation Time
(approx) 15 Minutes
Difficulty Level:
Simple installation for anyone.
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UnderCover Armor Flex Tri-Fold Tonneau Cover (19-22 Sierra 1500 w/ MultiPro Tailgate)Find parts that fit my vehicle
Item S510120
Sierra 1500 Sales Techs:
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M-F 8:30A-11P, Sat-Sun 8:30A-9P
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7 Reviews
Our Price
$1,299.99
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Product Information
Features, Description, Reviews, Q&A, Specs & Installation
Features & Specs
- To Learn How to Measure Your Bed Click Here
- Armor Flex Tri-Fold Tonneau Cover
- Provides Top Securement and Protection of Cargo
- Dual-Action Tailgate Seal for Tailgate Operation
- Low-Profile Design for Aesthetic Value
- Characterized by 3 Secure Riding Positions
- Automatic Latching Panels
- Heavy-Duty Construction
- Protected with LINE-X Specialty Automotive Matte-Black Coating
- Easy Installation
- 5-Year Manufacturer’s Warranty
- Fits the 2019-2022 GMC Sierra 1500 with Standard Box and MultiPro Tailgate
| Brand | UnderCover |
| Tonneau Cover Type | Hard Folding |
| Tonneau Cover Installation | Clamp On |
| Tonneau Cover Locking | Locking with Tailgate Lock |
| Toolbox Compatibility | Not Toolbox Compatible |
Description
Protects and Secures Cargo. As a hard folding cover, the UnderCover Armor Flex Tri-Fold Tonneau Cover automatically latches to the rail system of your GMC Sierra 1500’s truck bed for ultimate securement and protection from the elements. It looks great doing it with its low-profile design for smooth aesthetic integration. The cover comes with a dual-action tailgate seal to enable universal tailgate operation, allowing you to close the tailgate with the last panel of the cover up or down.
Convenient Tri-Fold Design. Due to its design, this tonneau cover provides 3 secure riding positions. You can drive with the cover closed or open without having to take the entire thing off.
Durable Construction. The Armor Flex tonneau cover is notable for its matte-black LINE-X specialty automotive coating, which provides advanced protection from dents and scuffs. This is in addition to ultra-strong panels that comprise the cover to ensure long-term use.
Easy to Install. This tonneau cover is very easy to install. Expect to do so within 15 minutes.
Five-Year Manufacturer’s Warranty. UnderCover, Inc. warrants that this tonneau cover will be structurally free from defects in material and workmanship for 5 years from the retail date of your purchase. Some exclusions may apply; please see manufacturer’s warranty for details.
Application. The UnderCover Armor Flex Tri-Fold Tonneau Cover is designed to fit the 2019-2022 GMC Sierra 1500 with the Standard Box and MultiPro Tailgate.
Technical Note. Not sure of your bed size? Click here for an instructional video explaining how to measure your bed length.
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Fitment:
- 2019 GMC Sierra 1500
- 2020 GMC Sierra 1500
- 2021 GMC Sierra 1500
- 2022 GMC Sierra 1500
- 2023 GMC Sierra 1500
- 2024 GMC Sierra 1500
- 2025 GMC Sierra 1500
UnderCover AX12022
AX12023
CA Residents: 
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Installation & What's in the Box
Installation Info
What's in the Box
- (1) Tonneau Cover
4.6
Customer Reviews (7)
Reviews of UnderCover Exterior products have an average rating of 4.8 out of 5
Questions & Answers
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Will It Fit My Sierra 1500
- 2.7L I4 - 19, 20, 21, 22, 23, 24, 25
- 3.0L I6 Duramax - 20, 21, 22, 23, 24, 25
- 4.3L V6 - 19, 20, 21
- 5.3L V8 - 19, 20, 21, 22, 23, 24, 25
- 6.2L V8 - 19, 20, 21, 22, 23, 24, 25
It is not Compatible on Sierra 1500 Legacy Models, fits the New Body Models Only.
