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The BackRack siderails with 21in toolbox compatibility fit 2020–2024 Chevrolet Silverado 2500/3500 HD and GMC Sierra 2500/3500 HD with 6.5ft beds. Built from heavy‑gauge tube welded to a full‑length base, they offer industrial strength for work truck use and are designed to pair with BackRack cab guards or install independently. No‑drill installation and toolbox compatibility simplify integration on the specified trucks.
BackRack 20-23 Silverado/Sierra 2500/3500HD Only 6.5ft Bed Siderails - Toolbox 21in
