Athearn 22907 N 4-8-8-4, Big Boy, Steam Locomotive, Tsunami DCC and Sound, Coal Tender, Union Pacific, 4013. Boiler backhead with full detailing. Individually applied piping, valves, generators, etc. Headlights and number boards with directional light change. Five pole, skewed armature motor with dual flywheels.Pivoting front and rear engines for negotiating 11" radius curves - 15" radius recommended. Factory installed Tsunami onboard sound DCC decoder. The item "Athearn 22907 N 4-8-8-4, Big Boy, DCC and Sound, Coal Tender, Union Pacific 4013" is in sale since Thursday, March 08, 2018. This item is in the category "Toys & Hobbies\Model Railroads & Trains\N Scale\Locomotives". The seller is "house_of_trains_omaha" and is located in Omaha, Nebraska. This item can be shipped worldwide.