Protect your truck bed with the UnderCover Ultra Flex hard-folding tonneau cover, part number undUX12023. Designed for the 2019-2026 Chevrolet Silverado and GMC Sierra 1500 with the new body style and a 6-foot 7-inch bed, this cover fits standard, extended, and crew cab configurations with or without the MultiPro or Multi-Flex tailgate. It does not fit trucks equipped with the CarbonPro bed. Before ordering a 2019 model, verify that your truck is the new body style rather than the Legacy Chevrolet or Limited GMC version.
The Ultra Flex combines a premium-grade matte black aluminum surface with a high-density polymer core for dependable heavy-duty performance. Its low-profile design sits nearly flush with the bed rails for a clean appearance, while the soft-impact underside and carpeted underpanels help protect cargo and provide a finished OEM-style look. Upgraded seals, tight-fit clamps, and a dual-action tailgate seal help block water, dust, and debris in demanding weather conditions. The cover has been tested from -40 to 180 degrees Fahrenheit and in up to 95 percent humidity, along with 7,500 hours of durability testing.
A patented rail and clamp system with automatic slam latches secures each panel when the cover is closed. The hard-folding design provides 100 percent bed access by allowing the panels to fold toward the cab and remain secured while driving. Integrated bed rail lighting improves visibility in the cargo area, and the redesigned Tip-and-Click mounting system supports one-person installation in under 30 minutes without specialized tools. Proudly assembled in Missouri and backed by a 5-year warranty, the UnderCover Ultra Flex delivers reliable bed protection, convenient operation, and a sleek matte black finish for daily driving or demanding work use.
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