MTH Railking 30-1843-1 O Gauge 4-8-8-4 Imperial Big Boy Steam Loco UP 4018 with PS3 Era_2000s- + Traxxas 8350X Steel Constant Velocity

Traxxas 8350X Steel Constant Velocity Drive Shafts for 4-Tec 2

2" Alias Ribbed Medium Compound Tires Mounted on Black Chrome Wheels

One year limited warranty beginning at date of purchase

1-D4 (17mm)

MTH Railking 30-1843-1 O Gauge 4-8-8-4 Imperial Big Boy Steam Loco UP 4018 with PS3 Era_2000s- + Traxxas 8350X Steel Constant VelocityMTH Railking 30 1843 1 O Gauge 4 8 8 4 Imperial Big Boy Steam Loco UP 4018 with PS3 Just months before Pearl Harbor, the American Locomotive Company delivered the first Big Boy to the Union Pacific Railroad. The UP's Department of Research and Mechanical Standards had designed the locomotive for a specific task: to pull a 3600 ton train unassisted over the Wasatch Mountains in Utah. While the Big Boy is often cited as the biggest steam locomotive ever