GMC Sierra 1500 Tonneau Cover - Extang - Endure ALX - Matte Black - `19-`25
GMC Sierra 1500 Tonneau Cover - Extang - Endure ALX - Matte Black - `19-`25

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GMC Sierra 1500 Tonneau Cover - Extang Endure ALX - Matte Black - '19-'25. A low-profile, folding aluminum-panel bed cover designed to protect cargo while maintaining a clean, factory-style look on 2019–2025 Sierra 1500 trucks with the 6'7" bed (without factory side storage boxes, with or without MultiPro/MultiFlex tailgate).
The Endure ALX combines four patented EnduraShield TPO-coated panels with a lightweight aircraft-grade aluminum frame to deliver a rigid, durable cover that resists dents, scratches, and UV fade. Panels are 1/2" thick and the assembly supports up to 500 lbs. of evenly distributed weight. The perimeter frame is finished in matte black powder coat and uses extruded weatherproof seals to keep out moisture and dust. Extang’s Secure Rotary Latch System provides one-handed, twist-and-lift operation and automatically latches for reliable security. When you need full bed access, the cover folds up toward the cab for quick loading.
Features
- Four EnduraShield TPO-coated panels with 1/2" thickness
- Lightweight aircraft-grade aluminum frame — supports 500 lbs. evenly distributed
- Matte black powder coat on frame and hinges for wear resistance
- Extruded weather seals around the perimeter for all-weather protection
- Extang Secure Rotary Latch: one-handed twist-and-lift operation, auto-latching
- Folds up to the cab for full bed access; backed by a limited 5-year warranty
If you have questions or want confirmation of fitment, call us directly — we’re happy to help. We offer installation and customization services at our two locations in Austin, Texas and the Los Angeles, California area. Call 512-982-9393 (TX) or 562-981-6800 (CA) for details or to schedule installation. If you’re considering purchasing multiple items, contact us for possible shipping discounts. We install on premises at both locations.
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