Using advanced materials to reduce weight, 2017 F-Series Super Duty pickup truck and chassis cab feature all-new, segment-exclusive smart technology to help increase customer productivity, comfort and convenience. The backbone is an all-new, fully boxed frame comprised of more than 95 percent high-strength steel that offers up to 24 times stiffer than the previous frame – enabling the most towing and hauling capability ever delivered by Super Duty. The new truck line features heavier-duty four-wheel-drive components, driveline, axles and towing hardware. For the first time, the Super Duty body uses high-strength, military-grade, aluminum alloy, which is more dent- and ding-resistant than the outgoing steel body and not subject to red rust corrosion. Together, high-strength steel and high-strength aluminum alloy help reduce weight by up to 350 pounds while Ford is reinvesting additional weight savings everywhere it counts, to give customers more towing and hauling capability than ever before. Super Duty chassis cab features an all-new, high-strength steel frame with an open-C-channel design behind the cab to enable easy aftermarket body upfit and modification.