UnderCover Ultra Flex Tonneau Covers
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OR if you know the Part Number you need, select from Options below.
Part #:UND-UX12002
Availability:In Stock
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Rating: 
ONLY Fits 5.2ft Bed Crew Cab (4 Full Size Doors).
Price: $1,199.99
- 100 percent bed access—all the time.
- Patented rail and clamp system with automatic slam latches.
- Premium-grade matte black aluminum surface and high-density polymer core.
- Exclusive soft-impact underside for superior cargo protection.
- Automatic slam latch system ensures easy operation.
- Low-profile design sits nearly flush with the bed rails.
- Proven for extremes from -40 to 180ºF and 95 percent humidity.
- Fits tighter to keep water out with upgraded seals and all-new tight-fit clamps.
- Redesigned Tip-and-Click mounting system offers a simple, one-person installation in under 30 minutes.
- Tested 7,500 hours for years of reliable performance.
- Proudly assembled in Missouri.
- Installation in 30 minutes or less.
- Hassle-Free Warranty: 5-year warranty supported by dedicated product experts.
The UnderCover Ultra Flex Tonneau Covers is built stronger and more durable, engineered for heavy-duty use with a sturdy, premium-grade matte black aluminum surface and a high-density polymer core. Its low-profile design sits nearly flush with the bed rails for a sleek appearance and up to 400 lbs. of weight capacity (evenly distributed).
With ultra details, inside and out, the Ultra Flex’s underside looks just as good as its top. The smooth, matte black finish delivers a refined look, while the exclusive soft-impact underside adds a padded layer of protection for shifting cargo.
The Ultra Flex fits tighter to keep water out. Upgraded seals and all-new tight-fit clamps provide state-of-the-art weather protection, keeping out water, dust, and debris—even in harsh conditions.
Security is a hallmark of any high-end tonneau cover, and the Ultra Flex delivers. With a patented rail and clamp system featuring automatic slam latches, the cover automatically locks down every panel when closed to keep gear secure and out of sight—that’s patented security you can trust.
The UnderCover Ultra Flex Tonneau Covers delivers 100 percent bed access—all the time. Simply fold the cover to the cab, secure it in place, and safely drive with the cover fully open. When closed, the slam latches reengage automatically.
Installation is fast and straightforward with UnderCover’s all-new click-in design. The redesigned Tip-and-Click mounting system requires no tools, no hassle, and installs in under 30 minutes.
Proven for extremes from Alaska to Florida, Ultra Flex has been tested in harsh conditions ranging from -40 to 180ºF and up to 95 percent humidity. It’s also been tested for 7,500 hours to reliably perform for over a decade of driving.
Backed by a 5-year warranty, the Ultra Flex is tough enough for the job site, sleek enough for daily driving, and secure enough to protect what matters.
California Residents: Prop 65 Warning
Customer Reviews
UnderCover Ultra Flex Tonneau Covers fits the following vehicle(s):
- 2015 Chevrolet Colorado
- 2016 Chevrolet Colorado
- 2017 Chevrolet Colorado
- 2018 Chevrolet Colorado
- 2019 Chevrolet Colorado
- 2020 Chevrolet Colorado
- 2021 Chevrolet Colorado
- 2022 Chevrolet Colorado
- 2007 Chevrolet Silverado 1500
- 2008 Chevrolet Silverado 1500
- 2009 Chevrolet Silverado 1500
- 2010 Chevrolet Silverado 1500
- 2011 Chevrolet Silverado 1500
- 2012 Chevrolet Silverado 1500
- 2013 Chevrolet Silverado 1500
- 2014 Chevrolet Silverado 1500
- 2015 Chevrolet Silverado 1500
- 2016 Chevrolet Silverado 1500
- 2017 Chevrolet Silverado 1500
- 2018 Chevrolet Silverado 1500
- 2019 Chevrolet Silverado 1500
- 2019 Chevrolet Silverado 1500 LD
- 2007 Chevrolet Silverado 2500 HD
- 2008 Chevrolet Silverado 2500 HD
- 2009 Chevrolet Silverado 2500 HD
- 2010 Chevrolet Silverado 2500 HD
- 2011 Chevrolet Silverado 2500 HD
- 2012 Chevrolet Silverado 2500 HD
- 2013 Chevrolet Silverado 2500 HD
- 2014 Chevrolet Silverado 2500 HD
- 2015 Chevrolet Silverado 2500 HD
- 2016 Chevrolet Silverado 2500 HD
- 2017 Chevrolet Silverado 2500 HD
- 2018 Chevrolet Silverado 2500 HD
- 2019 Chevrolet Silverado 2500 HD
- 2015 Chevrolet Silverado 3500 HD
- 2016 Chevrolet Silverado 3500 HD
- 2017 Chevrolet Silverado 3500 HD
- 2018 Chevrolet Silverado 3500 HD
- 2019 Chevrolet Silverado 3500 HD
- 2002 Dodge Ram 1500
- 2003 Dodge Ram 1500
- 2004 Dodge Ram 1500
- 2005 Dodge Ram 1500
- 2006 Dodge Ram 1500
- 2007 Dodge Ram 1500
- 2008 Dodge Ram 1500
- 2009 Dodge Ram 1500
- 2010 Dodge Ram 1500
- 2003 Dodge Ram 2500
- 2004 Dodge Ram 2500
- 2005 Dodge Ram 2500
- 2006 Dodge Ram 2500
- 2007 Dodge Ram 2500
- 2008 Dodge Ram 2500
- 2009 Dodge Ram 2500
- 2010 Dodge Ram 2500
- 2003 Dodge Ram 3500
- 2004 Dodge Ram 3500
- 2005 Dodge Ram 3500
- 2006 Dodge Ram 3500
- 2007 Dodge Ram 3500
- 2008 Dodge Ram 3500
- 2009 Dodge Ram 3500
- 2010 Dodge Ram 3500
- 2004 Ford F-150
- 2005 Ford F-150
- 2006 Ford F-150
- 2007 Ford F-150
- 2008 Ford F-150
- 2009 Ford F-150
- 2010 Ford F-150
- 2011 Ford F-150
- 2012 Ford F-150
- 2013 Ford F-150
- 2014 Ford F-150
- 2015 Ford F-150
- 2016 Ford F-150
- 2017 Ford F-150
- 2018 Ford F-150
- 2019 Ford F-150
- 2020 Ford F-150
- 2008 Ford F-250 Super Duty
- 2009 Ford F-250 Super Duty
- 2010 Ford F-250 Super Duty
- 2011 Ford F-250 Super Duty
- 2012 Ford F-250 Super Duty
- 2013 Ford F-250 Super Duty
- 2014 Ford F-250 Super Duty
- 2015 Ford F-250 Super Duty
- 2016 Ford F-250 Super Duty
- 2017 Ford F-250 Super Duty
- 2018 Ford F-250 Super Duty
- 2019 Ford F-250 Super Duty
- 2020 Ford F-250 Super Duty
- 2021 Ford F-250 Super Duty
- 2022 Ford F-250 Super Duty
- 2023 Ford F-250 Super Duty
- 2024 Ford F-250 Super Duty
- 2025 Ford F-250 Super Duty
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