Air Ride Suspension, Air Brakes, Hydraulic Removable Gooseneck, Flip-Up Neck Extension, S/A Pin-On Steerable Booster Axle, Plumbed for Booster Axle, 28 ft Main Deck, 102 in Usable Deck Width, Folding Side Extensions, Honda Gas Powered Self Contained Hydraulic System, Aluminum Outer Wheels, 275/70R22.5 Tires, 147800 lb GVWR, Additional Pin-On S/A Flip Booster Axle