GMC Sierra 2500HD Tonneau Cover - Undercover - Flex Folding - Black Textured - `15-`19
GMC Sierra 2500HD Tonneau Cover - Undercover - Flex Folding - Black Textured - `15-`19
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GMC Sierra 2500HD Tonneau Cover – UnderCover Flex Folding, Black Textured, 2015–2019. A hard folding bed cover that pairs dependable security with everyday convenience.
Built for 6 ft 6 in beds, the Flex uses FRP composite panels that are lighter, stronger, and more dent resistant than aluminum. Its ultra-low profile sits inside the bed rails for a clean look, while rubber seals and drain tubes channel water out of the bed. Built-in prop rods let you drive with the cover fully open, and plastic buckles and straps secure panels when partially open. The no-drill, clamp-on design installs quickly, and the entire cover can be removed in seconds without tools. Backed by a 3-year warranty.
Features
- FRP composite hard panels
- Ultra-low profile inside bed rails
- Full bed access with built-in prop rods
- Rubber seals and drain tubes for weather resistance
- Clamp-on, no-drill install; quick tool-free removal
- Black textured finish with secure buckles and straps
Have questions or need fitment guidance? Call our team. We offer installation and customization at our Austin, Texas and Los Angeles, California area locations. Texas: 512-982-9393. California: 562-981-6800.
Thinking about multiple items? 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?
We're here to help!
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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