{"product_id":"athg-2253","title":"N GEN 4-8-8-4 Big Boy Locomotive with DCC \u0026 Sound, UP #4000 (ATHG-2253)","description":"\u003cdiv class=\"product_description\"\u003e\n\t\u003cp\u003eAn HO-scale reproduction of Union Pacific's iconic Big Boy, the Athearn Genesis 4-8-8-4 Big Boy locomotive with DCC and sound (UP 4000) brings the power and detail of the prototype to your layout. This ready-to-run model pairs a heavy die-cast frame with a finely detailed boiler backhead, printed gauges, and individually applied piping, valves, and generators, while see-through running boards and cab windows add realism. Inside, a DCC decoder with SoundTraxx Tsunami2 provides authentic chuff, whistle, and bell sounds that operate in both DC and DCC, and a bidirectional LED headlight keeps illumination steady as it runs.\u003c\/p\u003e\n\t\u003cp\u003eDesigned to mirror the prototype, the Big Boy features the 4-8-8-4 wheel arrangement, large 68-inch drivers, and the kind of traction that made it famous. It ships fully assembled and ready to run, with body-mounted scale knuckle couplers, a heavy die-cast frame for traction, and a precise drivetrain for smooth operation at slow speeds. Road-number specifics like UP 4000 depict an as-delivered configuration with coal burners and cooling pipes; other finishes, including Primed for Grime and Legendary Liveries, let modelers tailor the look to their layout. It also supports MU lashups, full DCC control, and CV tuning, with a minimum curve radius of 11 inches to fit most HO layouts.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Athearn Genesis (ATHG)","offers":[{"title":"Default Title","offer_id":47609312510004,"sku":"ATHG-2253","price":513.03,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0597\/6653\/8292\/files\/ATHG-2253.jpg?v=1774293675","url":"https:\/\/nankinhobby.com\/products\/athg-2253","provider":"Nankin Hobby","version":"1.0","type":"link"}