2019-2025
2014-2018
2007-2013
1999-2006
Installation Time
(approx) 30 Minutes
Difficulty Level:
Simple installation for anyone.
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UnderCover Armor Flex Tri-Fold Tonneau Cover (14-18 Sierra 1500)Find parts that fit my vehicle
Item S509017-A
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
$1,349.99 - $1,449.99
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Product Information
Features, Description, Reviews, Q&A, Specs & Installation
Features & Specs
- To Learn How to Measure Your Bed Click Here
- Tri-Fold Hard Tonneau Cover
- Versatile Truck Bed Protection
- Buckle and Strap Secures Folded While Driving
- Heavy-Duty FRP (Fiberglass Reinforced Polymer) Panels
- Line-X® Automotive Coated Surfaces Prevents Scruffs and Dents
- Dual Action Tailgate Seals
- No-Drill Installation
- Backed by a 5-Year Warranty
- Made in the USA
- Fits 2014 to 2018 GMC Sierra 1500 Models
| 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
Protect Your Truck Bed and Its Contents. Prevent the elements from ruining your cargo with the UnderCover Armor Flex Tri-Fold Tonneau Cover. Tri-fold truck covers are one of the most convenient tonneau covers out there and what makes this one special is its detailed design and premium materials. With the Line-X® Automotive Coating protective layer, you’ll have a dent and scratch-resistant cover that will last for years.
Flushed Mounted. Not a fan of bulky tonneau covers that you can see from a mile away? Then this tonneau cover is for you. It comes with a barely-there flushed mounting for that sleek and aerodynamic appeal truckers really go for.
Tough Construction. Durability is high up in the list of priorities when buying tonneau covers. Fortunately, the UnderCover Armor Flex Tri-Fold Tonneau Cover delivers on that front as well. Made of extremely tough fiberglass reinforced polymer panels, this cover is built to last a lifetime. In addition, the layer of Line-X® Automotive Coating truly makes this one of the toughest covers in the market today.
Hassle-Free Installation. The installation of the UnderCover Armor Flex Tri-Fold Tonneau Cover is made stress-free as well. The kit comes with everything your need from hardware and event the drain tube for collecting water. You can do the full installation within 30 minutes using simple hand tools.
Five-Year Warranty. The UnderCover Armor Flex Tri-Fold Tonneau Cover is warranted against defects in materials and workmanship for five years. However, damages resulting from normal wear, accidents, installation mistakes, and modifications will not be covered.
Application. The UnderCover Armor Flex Tri-Fold Tonneau Cover fits 2014 to 2018 GMC Sierra 1500 models.
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:
- 2014 GMC Sierra 1500
- 2015 GMC Sierra 1500
- 2016 GMC Sierra 1500
- 2017 GMC Sierra 1500
- 2018 GMC Sierra 1500
UnderCover AX12018
AX12019
AX12025
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) Cover Assembly
- (2) Rails
- (1) Drain Tube
- Installation Hardware
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
- 4.3L V6 - 14, 15, 16, 17, 18
- 5.3L V8 - 14, 15, 16, 17, 18
- 6.2L V8 - 14, 15, 16, 17, 18
