Extang Endure ALX - 19 (NewBody)-26 Silv/Sierra 1500 6'7" w/o Side Storage Boxes w/o Carbon Pro Bed Model 80457 Duramag MegaStep wheel-to-wheel running boards are

MegaStep wheel-to-wheel running boards are uniquely designed with extra length on the rear of the boards

HD Mounting Bracket Kit for BedStep 2

75 inches deep from the back of the bumper in the stored position

For smaller underbody boxes

NOTE:  Add 2

Extang Endure ALX - 19 (NewBody)-26 Silv/Sierra 1500 6'7" w/o Side Storage Boxes w/o Carbon Pro Bed Model 80457 Duramag MegaStep wheel-to-wheel running boards areExtang Endure ALX 19 (NewBody) 26 Silv Sierra 1500 6'7" w o Side Storage Boxes w o Carbon Pro Bed Model 80457 From tireless engineering and a relentless pursuit for perfection comes a low profile bed cover designed to function like no other the Endure ALX from RealTruck. With a flush mounted design, the Endure ALX creates a seamless, polished exterior appearance when closed while delivering highly functional full bed access when open. The Endure ALX