This is an original Big Boy locomotive design by Bigboysbricks LLC, built primarily with GoBricks elements and focused on scale accuracy and reliable performance. The model is powered by three PF L motors that directly drive the main drivers, with the battery box housed in the tender. It features custom wheels and side rods by MackBricks for added strength and realism, and is engineered for smooth operation on a minimum curve radius of R104. The complete model consists of 2,944 parts and is intended for advanced builders and large-radius layouts. Each kit is made to order, expect multiple weeks for shipping.