The Super Duty's strength comes from its frame. The frame is made up of over 95 percent high-strength steel. The steel is very rigid, which helps to prevent structural twisting. To provide even more support, the frame features a fully boxed design. Multiple cross braces support the cabin and the cargo you're towing behind.
When its properly equipped, the Super Duty has a maximum conventional towing capacity of 21,000 pounds. That's more than enough to carry most large boats, heavy equipment, and so much more. With the truck's robust axle and suspension system, you can tow confidently.