GMC Sierra Tonneau Cover - Extang - Endure ALX - Matte Black - `14-`18
GMC Sierra Tonneau Cover - Extang - Endure ALX - Matte Black - `14-`18
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GMC Sierra Tonneau Cover - Extang Endure ALX - Matte Black (2014–2018) is a low-profile folding cover engineered to protect your truck bed while maintaining a clean, factory-like look. Built with durable materials and user-focused design, it’s intended for owners who want dependable protection and quick access to cargo.
The Endure ALX uses four patented EnduraShield TPO-coated panels mounted on a lightweight aircraft-grade aluminum frame. Each panel is approximately 1/2" thick, combining rigidity and reduced weight so the cover supports up to 500 lbs of evenly distributed weight while resisting scratches and UV-related fading. The perimeter frame is finished in matte black powder coat and uses extruded weather seals at every seam to keep out water and debris. At the tailgate the Extang-exclusive Secure Rotary Latch System lets you open the cover with a simple twist-and-lift motion and it automatically latches closed for added security. When you need full bed access the Endure ALX folds up toward the cab in seconds. The cover is backed by a limited 5-year warranty and can typically be installed with basic tools in a driveway or garage in roughly 30 minutes.
Features
- Four EnduraShield TPO-coated folding panels
- Lightweight aluminum frame with 1/2" thick panels
- Supports 500 lbs of evenly distributed weight
- Extang Secure Rotary Latch for one-handed operation
- Matte black powder coat perimeter and extruded weather seals
- Folds up to the cab for full bed access; limited 5-year warranty
If you have questions or want help confirming fitment, call us directly — we’re happy to assist. We offer installation and customization services at two locations: Austin, Texas and the Los Angeles, California area. 512-982-9393 (TX) • 562-981-6800 (CA). If you’re considering purchasing multiple items, please contact us for potential shipping discounts. We install on premises at both locations.
CA Residents: 
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Need Assistance?
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Call us at 512-982-9393 (Austin, TX) or
562-981-6800 (Signal Hill, CA)
and get assistance from one of our sales team members!
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