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🔒 Lock it down, rain or shine—your truck’s ultimate armor.
The RealTruck BAKFlip MX4 Gen 3 is a hard folding truck bed cover designed for 2019-2026 Chevy/GMC Silverado and Sierra 5'10" beds with MultiPro/Flex tailgates. Featuring a patented auto-latch locking system, reinforced aluminum and polymer construction with 22% increased strength, and advanced weatherproof seals, it offers superior security, durability, and protection in extreme climates. Its flush-mount matte-black design ensures a sleek look, while the fold-to-cab functionality provides full bed access. Proudly assembled in Missouri and backed by a 5-year warranty.







| ASIN | B07GNLG19C |
| Automotive Fit Type | Vehicle Specific Fit |
| Best Sellers Rank | #23,010 in Automotive ( See Top 100 in Automotive ) #61 in Truck Tonneau Covers |
| Brand Name | RealTruck |
| Customer Reviews | 4.3 4.3 out of 5 stars (1,828) |
| Exterior Finish | Aluminum |
| Global Trade Identification Number | 00192631020424 |
| Included Components | Tonneau cover^rails^hardware^installation guide |
| Item Type Name | BAKFlip MX4 Hard Folding Truck Bed Tonneau Cover | 448130 | fits 2019 GM Silverado, Sierra 5' 8" bed |
| Lock Type | Tailgate |
| Manufacturer | BAK |
| Manufacturer Part Number | 448130 |
| Manufacturer Warranty Description | Extended 5 Year Warranty |
| Material Type | Aluminum |
| Model Number | 448130 |
| OEM Equivalent Part Number | 448130 |
| Style Name | MX4: America’s Top Seller |
| UPC | 192631020424 |
| Unit Count | 1 Count |
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