UnderCover AX12025 Armor Flex Hard Folding Tonneau Cover Chevrolet Silverado/GMC Sierra 1500/2500/3500 14-19 8'
UnderCover ArmorFlex Tonneau Cover
The UnderCover ArmorFlex is a premium hard tri-fold truck bed cover engineered for strength, protection, and a low-profile appearance. It uses rigid, lightweight aluminum panel construction and a robust aluminum frame to deliver long-lasting durability while maintaining a sleek, nearly flush fit with the bed rails.
Durable, textured matte-black finish provides impact and abrasion resistance. Weather protection is provided by EPDM rubber seals and integrated drain tubes, while a dual-action tailgate seal lets the tailgate open and close without unlatching the cover.
Operation is simple: drop the tailgate, pull the latch release cables at either side, and fold the cover toward the bulkhead. The cover can be secured in a 2/3 open position with integrated safety straps or flipped upright against the rear window using integrated prop rods for full bed access. Slam latches automatically secure each panel when closed.
*Installation/Compatibility: installs with a clamp-on installation system for quick setup. Verify fitment for your specific truck bed before installation.
- Construction: Durable yet lightweight aluminum panels with a robust aluminum frame
- Design: Low-profile, tri-fold layout that sits nearly flush with bed rails
- Finish: Specialty textured matte-black automotive coating for enhanced resistance to impacts and abrasions
- Weather resistance: EPDM rubber seals and integrated drain tubes to keep moisture out
- Convenience: Slam latches on each panel and a dual-function tailgate seal
- Load capacity: Rated to support up to 400 lb evenly distributed
- Access options: Secures at 2/3 open with safety straps or stands upright with prop rods for full bed access
- Warranty: 5-year warranty
Brand | UnderCover |
Material | Aluminum |
T-Slot Rails | No |
Material Type | Hard |
Series | Armor Flex |
Submodel | 8' Bed |
Type Cover | Hard Folding |
Color | Matte Black |
Fitment | 2014 Chevrolet Silverado 1500, 2015 Chevrolet Silverado 1500, 2016 Chevrolet Silverado 1500, 2017 Chevrolet Silverado 1500, 2018 Chevrolet Silverado 1500, 2014 GMC Sierra 1500, 2015 GMC Sierra 1500, 2016 GMC Sierra 1500, 2017 GMC Sierra 1500, 2018 GMC Sierra 1500, 2015 Chevrolet Silverado 2500, 2016 Chevrolet Silverado 2500, 2017 Chevrolet Silverado 2500, 2018 Chevrolet Silverado 2500, 2019 Chevrolet Silverado 2500, 2015 Chevrolet Silverado 3500, 2016 Chevrolet Silverado 3500, 2017 Chevrolet Silverado 3500, 2018 Chevrolet Silverado 3500, 2019 Chevrolet Silverado 3500, 2015 GMC Sierra 2500, 2016 GMC Sierra 2500, 2017 GMC Sierra 2500, 2018 GMC Sierra 2500, 2019 GMC Sierra 2500, 2015 GMC Sierra 3500, 2016 GMC Sierra 3500, 2017 GMC Sierra 3500, 2018 GMC Sierra 3500, 2019 GMC Sierra 3500 |
Box Weight | 100 lbs |
Box Length | 80 in |
Box Width | 30 in |
Box Height | 7.5 in |
UPCCode | 840114300289 |
Brand | UnderCover |
Material | Aluminum |
T-Slot Rails | No |
Material Type | Hard |
Series | Armor Flex |
Submodel | 8' Bed |
Type Cover | Hard Folding |
Color | Matte Black |
Fitment | 2014 Chevrolet Silverado 1500, 2015 Chevrolet Silverado 1500, 2016 Chevrolet Silverado 1500, 2017 Chevrolet Silverado 1500, 2018 Chevrolet Silverado 1500, 2014 GMC Sierra 1500, 2015 GMC Sierra 1500, 2016 GMC Sierra 1500, 2017 GMC Sierra 1500, 2018 GMC Sierra 1500, 2015 Chevrolet Silverado 2500, 2016 Chevrolet Silverado 2500, 2017 Chevrolet Silverado 2500, 2018 Chevrolet Silverado 2500, 2019 Chevrolet Silverado 2500, 2015 Chevrolet Silverado 3500, 2016 Chevrolet Silverado 3500, 2017 Chevrolet Silverado 3500, 2018 Chevrolet Silverado 3500, 2019 Chevrolet Silverado 3500, 2015 GMC Sierra 2500, 2016 GMC Sierra 2500, 2017 GMC Sierra 2500, 2018 GMC Sierra 2500, 2019 GMC Sierra 2500, 2015 GMC Sierra 3500, 2016 GMC Sierra 3500, 2017 GMC Sierra 3500, 2018 GMC Sierra 3500, 2019 GMC Sierra 3500 |
Box Weight | 100 lbs |
Box Length | 80 in |
Box Width | 30 in |
Box Height | 7.5 in |
UPCCode | 840114300289 |
Warranty Information
1. UnderCover Ultra Flex
Warranty: Lifetime on the frame, 5 years on components.
Conditions: Applies only to the original owner with purchase from an authorized dealer. Not valid for transfer or reinstalling on another vehicle.
Limitations: Does not cover improper installation, accidents, misuse, or chemical damage.
Repair/Replacement: Upon evidence of defect, the manufacturer will decide on repair or replacement.
2. UnderCover SE
Warranty: Lifetime on the body, 1 year on hardware and lift mechanisms.
Conditions: Valid only for the first purchaser with proof of purchase and standard installation.
Limitations: No coverage for misuse, modifications, or negligence.
Repair: Through authorized service only. Transportation costs are not covered.
3. UnderCover LUX
Warranty: Lifetime on structure and factory paint.
Conditions: Only for the first owner and initial installation.
Limitations: Invalid if painted outside the factory, improper use, aggressive cleaners, or environmental damage.
Care: Clean regularly with automotive-safe products.
Repair: Decision made after condition assessment.
4. UnderCover Flex
Warranty: Lifetime on core structure, 5 years on other parts.
Conditions: Covers only original purchaser through authorized dealers.
Limitations: Not warranted against damage from misuse or external elements.
Repair: Performed through official service channels if needed.
5. UnderCover Elite
Warranty: Lifetime on ABS body, 1 year on lift parts and hardware.
Conditions: Valid for original owner with receipt.
Limitations: Excludes improper installation, driving with lid open, unauthorized modifications, or environmental/chemical damage.
Repair: Through official channels; shipping at owner's cost.
Note: Remove cover when transporting oversized items.
6. UnderCover Elite LX
Warranty: Lifetime on structure and factory paint, 1 year on hardware.
Conditions: Only valid for the original owner and first installation.
Limitations: Not covered if repainted, used open, or exposed to aggressive substances.
Care: Use only safe products for plastic and paint.
Repair: Manufacturer decides based on defect evidence.
7. UnderCover SwingCase
Warranty: 1 year on the entire product, including body, locks, hinges, and hardware.
Conditions: Valid from purchase date for original buyer with receipt.
Limitations: No coverage for installation errors, negligence, chemical or mechanical damage.
Care: Clean only with plastic-safe products.
Repair: Repair or replacement available via seller upon manufacturer approval.
How to Submit a Warranty Claim
If a defect is discovered during the warranty period, the product may be returned to the place of purchase, subject to prior approval. Unauthorized returns will not be accepted.
Provide the following:- Order number
- Full name, address, phone number, email
- Vehicle year, make, and model
- Product name or part number
- Description of the issue
- Copy of original receipt
- Photos showing the defect
All claims will be reviewed only upon submission of a complete data package and proof of defect.