Cat C15 Engine, Engine Brake, Eaton Fuller 18-Speed Transmission, 40000 lb Rears, 295/80R22.5 Front Tires, 11R22.5 Rear Tires, 8-Bag Air Ride Suspension, 5700 mm Wheelbase, GVM 24.6 t, GCM 90 t, Right Weigh Load Scales