Putco Nylon Boss side rails for 2014–2018 Chevy Silverado 1500 and GMC Sierra 1500 with 5'8" beds. These 2.5-inch NeverRust T-304 stainless rails include black nylon end caps and a high-polish finish that complements OE chrome. Each tie-down point supports 500 lb. The pair bolts in using existing mounting hardware with no drilling required, includes the full hardware kit, and is backed by a limited lifetime warranty.
Putco 14-18 Chevy Silverado LD - 5.5ft Bed Nylon Boss Locker Side Rails