Take the fully boxed under-cab and redesigned C-channel aft-of-cab frame built of 95% high-strength steel — plus the heftier components of the suspension, chassis and driveline. Now add the outstanding hauling and towing capabilities of this Super Duty and you’ve got an impressive gross combination weight rating — 40,000 pounds — one of the highest of any Class 3-5 chassis cab built today. *
*Max GCWR on F-550, 6.7L. Class 3-5 Conventional Chassis Cab.