N GEN 4-8-8-4 Big Boy Locomotive UP #4020 (ATHG-2248)

An N-scale Genesis 4-8-8-4 Big Boy steam locomotive in Union Pacific livery, UP 4020, this ready-to-run model brings the sheer scale and power of the legendary Big Boy to an N-scale layout. It is designed for model railroaders who want to recreate long, heavy freight runs over challenging grades, delivering authentic size and detailing in a compact scale.

Meticulously detailed, the model features a boiler backhead with printed gauges, individually applied piping and valves, operating eccentric cranks, and directional headlights with constant brightness, along with see-through running boards and cab windows. It rides on a heavy die-cast frame for traction, uses body-mounted scale knuckle couplers for reliable coupling, and includes options ranging from pristine as-delivered schemes to grime-ready looks; road-number variations and Legendary Liveries provide realistic paint schemes. Depending on configuration, some versions include onboard DCC with SoundTraxx Tsunami2 sound that works in both DC and DCC, with full DCC functions, while others are optimized for DC operation. A minimum 11-inch curve radius accommodates most standard N-scale layouts, making it a capable centerpiece for scaling up ambitious freight runs.