Collection: 2020-2026 Chevy Silverado 3500HD Bed Extenders

Bed extenders for the 2020-2026 Chevy Silverado 3500HD, fitment confirmed. Covers both the 6'9" Standard Box and 8' Long Box, with options from AMP Research BedXtender HD Sport and Max, plus tailgate-mounted designs that swing out or fold flat against the bed rails.

Will a bed extender work with a fifth-wheel or gooseneck hitch? Yes. Tailgate-mounted extenders flip into the bed to clear gooseneck balls and fifth-wheel kingpins, so you keep your hauling setup and gain roughly two feet of cargo length when the tailgate is down.

Verified fitment on every Silverado 3500HD listing, no guesswork.