BLI 10609 HO Scale Big Boy 4-8-8-4 UP 4016 with As-Delivered Aftercooler 1941 Stealth DC Era_1973-1991 Low Resistance - High Efficiency:

Low Resistance - High Efficiency: Resistance is reduced by 11%

Extreme Velineon brushless horsepower delivers the muscle you want with the reliability you expect from Traxxas

Detailed rear fuselage section

It refuses to show its age or diminish in popularity

BLI 10609 HO Scale Big Boy 4-8-8-4 UP 4016 with As-Delivered Aftercooler 1941 Stealth DC Era_1973-1991 Low Resistance - High Efficiency:BLI 10609 HO Scale Big Boy 4 8 8 4 UP 4016 with As Delivered Aftercooler 1941 Stealth DC When railfans think of big steam, one locomotive almost always comes to mind: the Big Boy. Often regarded as the largest steam locomotive ever builtand certainly a contender for the world's most famous locomotivethe Big Boy was created to meet some of the most demanding operating requirements ever placed on a steam engine. The Union Pacific Railroad needed a