The UnderCover Ultra Flex hard-folding tonneau cover fits the 6.5-foot bed of 2019-2026 Chevy Silverado 1500 / GMC Sierra 1500 (without CarbonPro). An aluminum surface over a high-density polymer core is rated for up to 400 lbs evenly distributed, and automatic slam latches lock every panel when the cover closes.
Part number: UX12023
UnderCover hard folding tonneau cover.
Hard folding covers use rigid panels that fold forward in sections and can usually be driven with the panels stacked.
Use the vehicle selector to confirm your exact year and configuration.
Manufacturer data for this part — all visible, no tabs to dig through.
| Brand | UnderCover |
| Part number | UX12023 |
| Shipping carton | 82 × 32 × 8 in (208 × 81 × 20 cm) |
| Shipping weight | 36.3 kg (80 lb) |
| Category | Truck Bed & Tonneau |
More parts for the 2019-2026 GMC Sierra 1500. Untick anything you don’t need.
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