The Putco Nylon Boss Locker side rails fit Chevrolet Silverado 1500 and GMC Sierra 1500 models listed for the 2004–2007 period with a 5'8" bed. These 2.5-inch diameter rails use NeverRust T-304 stainless steel with black nylon ends and a polished finish that matches OE chrome. Tie-down points are rated to 500 lbs, installation uses existing mounting hardware with no drilling, and the rails carry a limited lifetime warranty.
Putco 03-06 Chevrolet Silverado LD/HD 5.5ft Bed Nylon Boss Locker Side Rails