BLI 10610 HO Scale Big Boy 4-8-8-4 UP 4022 with Wilson Aftercooler 1944 Paragon4 DCC Symter Mars Light (where applicable)

Mars Light (where applicable)

Molded cage chassis

Stab StG 3

choose your own colors to personalize your clipless Slash® body

BLI 10610 HO Scale Big Boy 4-8-8-4 UP 4022 with Wilson Aftercooler 1944 Paragon4 DCC Symter Mars Light (where applicable)BLI 10610 HO Scale Big Boy 4 8 8 4 UP 4022 with Wilson Aftercooler 1944 Paragon4 DCC 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