2015 Cascadia 125 ,Air ride, DD-13- L6, 12.8L, 450HP with 10 speed Eaton Fuller transmission, Tires- 295/75R22.5 with All steel wheels, 80% tread, 180" wheel base, 3.55 Rear ends, dual fuel tanks w/ 170 Gal. capacity, Brakes 90%, Air ride suspension and air operated 5th wheel.