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The Go Rhino RB20 Slim Line running board kit for 2015–2019 GMC Sierra 2500/3500HD crew cab diesel 4-door provides a narrow, full-length step that keeps panels protected while improving ground clearance for off-road driving. The bullet-stamped profile spans 5½ inches at its widest point and tapers toward the rear. Made from 16-gauge zinc‑coated galvanized steel and available with a protective bedliner or textured black finish, the kit includes mounting brackets, Limited Lifetime materials warranty and a 5-year finish warranty, with easy, no-drill installation.
Go Rhino 15-19 GMC Sierra 2500/3500HD CC Dsl RB20 Slim Running Boards Kit (w/Brackets) - Bedliner Ct
