2025 YEAR IN REVIEW

Our biggest releases of 2025

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BEST RC AIRCRAFT OF 2025

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2025 YEAR IN REVIEW

Our biggest releases of 2025

NEW & IN STOCK

Available now and ready to ship

BEST RC AIRCRAFT OF 2025

Top aircraft from 2025

Discontinued

HO DDA40X Locomotive with DCC & Sound, UP #6900

Athearn - ATHG71619

HO DDA40X Locomotive with DCC & Sound, UP #6900 Overview

Built exclusively for Union Pacific by EMD between 1969 & 1971, the DDA40X Centennial locomotives were the modern equivalent of the railroad's famed Big Boy steam locomotives. These massive 98-foot double-engine diesels were UP's mainstay hotshot power for a decade until they were sidelined by the recession of the early 1980's. They had one last hurrah in 1984-85 when 25 of them were returned to service for about a year to help relieve a power shortage.

What are Legendary Liveries? An Athearn exclusive, they are the ultimate answer to “What if?” Featuring some of the most popular railroad paint schemes of all time, these models are perfect for collecting, proto-freelancing, or just plain fun! Whether company proposed paint schemes, canceled locomotive orders, or alternate takes on history, Legendary Liveries are fun and unique additions to any roster. Enjoy these items, and answer the ultimate railroad question of: “What if?”

Built by EMD exclusively for Union Pacific between 1969 & 1971, the DDA40X Centennial locomotives were the modern equivalent of the railroad's famed Big Boy steam locomotives. These massive 98-foot double-engine diesels were UP's mainstay hotshot power for a decade until they were sidelined by the recession of the early 1980's. They had one last hurrah in 1984-85 when 25 of them were returned to service for about a year to help relieve a power shortage.