Cat Diesel Engine, Engine Brake, Eaton Fuller 10-Speed Manual Transmission, 12000 lb Front Axle, 44000 lb Rears, 56000 lb GVWR, Aluminum Wheels, 11R24.5, Air Trac 4-Bag Air Ride Suspension, 212 in Wheelbase, 95 in Cab to Axle, 216 in Cab to End of Frame