122SD, Heavy Duty Trucks - Conventional Trucks w/o Sleeper, Detroit , 18 Spd, This Freightliner heavy haul truck is ready to move equipment. Rated up to 140,000 GCW it has 20,000# front axles, 46,000# rear axles and a 20,000# steerable drop axle. Polished chrome on the exterior really makes this truck stand out., 600 Horse Power, Air Ride Suspension, Wheels, 264 Wheel Base, 24.5, Tandem Axle, Ratio,