The Putco Nylon Boss Locker side rails for GMC Sierra 3500 and Chevrolet Silverado 3500 (2015–2019) are heavy-duty stainless steel bed rails with 2.5-inch diameter tubing and black nylon end caps. Polished to match OE chrome, each tie-down point carries up to 500 lbs. Installation requires no drilling, includes all hardware, uses existing mounting methods and is backed by a limited lifetime warranty for American-made stainless steel rails.
Putco 15-19 Chevy Silverado HD - 8ft Dually Nylon Boss Locker Side Rails