GMC Sierra 2500 HD Tonneau Cover - Extang - Endure ALX - Matte Black - `20-`26
GMC Sierra 2500 HD Tonneau Cover - Extang - Endure ALX - Matte Black - `20-`26
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GMC Sierra 2500 HD Tonneau Cover - Extang - Endure ALX - Matte Black (2020–2026). The Endure ALX is a low-profile, flush-mounted folding tonneau designed to protect your bed while providing quick, one-handed access when you need it.
Constructed from four patented EnduraShield TPO-coated panels on a lightweight aluminum frame, the Endure ALX balances strength and low weight. Each ½-inch panel and the aircraft-grade frame deliver rigidity and resistance to scratches, dents, and UV fading while supporting up to 500 lbs of evenly distributed weight. The perimeter frame is finished in matte black powder coat and uses extruded weatherproof seals at every seam to help keep out moisture and road debris. At the tailgate, Extang’s exclusive Secure Rotary Latch System allows a simple twist-and-lift, automatically latching closed for positive security. When full bed access is needed the cover folds up to the cab in seconds. A limited 5-year warranty is included, and the cover can typically be installed in a garage or driveway with basic tools in about 30 minutes.
Features
- Compatible with 2020–2026 GMC Sierra 2500 HD — 6'9" bed without factory side storage boxes
- Four EnduraShield TPO-coated panels with lightweight aluminum frame
- Supports up to 500 lbs of evenly distributed weight
- Extang Secure Rotary Latch for one-handed twist-and-lift operation
- Matte black textured powder coat and extruded weather seals for weather resistance
- Limited 5-year warranty; folds up to the cab for full bed access
If you have questions or want help confirming fitment, call us directly — we’re happy to help. We offer installation and customization services at both of our locations in Austin, Texas and the Los Angeles, California area. 512-982-9393 (TX) | 562-981-6800 (CA)
If you are thinking about purchasing multiple items, please contact us for shipping discounts. We install on premises at both locations.
CA Residents: 
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
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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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