BLI 7237 N Scale Big Boy 4-8-8-4 Steam Loco Union Pacific ( Promontory Excursion) UP 4014 Paragon4 Truck Extended rear body posts are

Extended rear body posts are required - NOT INCLUDED

Four-pack includes 1/2 ounce (15ml) each of Light & Medium Conductive Oils

This design allows for more steering angle compared to stock

while adding 44 grams of unsprung weight to your TRX-4 for better crawling performance and more stability during steep climbs

BLI 7237 N Scale Big Boy 4-8-8-4 Steam Loco Union Pacific ( Promontory Excursion) UP 4014 Paragon4 Truck Extended rear body posts areBLI 7237 N Scale Big Boy 4 8 8 4 Steam Loco Union Pacific ( Promontory Excursion) UP 4014 Paragon4 Often called the largest steam loco ever made, and certainly a contender for the Worlds Most Famous Locomotive, the Big Boy was forged under some of the most strenuous demands ever placed on a locomotive. The UP Railroad needed a locomotive that could be used to pull a 3,600 ton train over Sherman Hill and the 1. 14% grade from Ogden to Wasatch, Utah