Brady's 2015 GMC Sierra 2500HD already turned heads with its clean, rugged design. But now, it demands attention with the piercing blast of the Shocker S6 544K Nightmare Edition Train Horn Kit. Custom painted in a matching white finish, this install proves that bold sound and aesthetic unity can go hand in hand.
The heart of this setup is the Shocker S6, featuring six hand-tuned horns built for max output and tuned to replicate the deep, thunderous tone of a real train. Backing it up is the HornAir 544K onboard air system, complete with a 5-gallon tank and constant duty compressor, delivering 8–10 seconds of powerful honk time.
But this build isn’t just loud, it’s practical. Brady’s setup doubles as a utility system, capable of inflating tires or powering air tools on demand. The result is a truck that looks sharp, sounds massive, and handles real-world tasks with ease.
Key Features:
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Shocker S6 Train Horns – Six of our loudest horns, hand-tuned for authentic train sound
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Nightmare Edition Custom Finish – Powder-coated and painted white to match the truck
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HornAir 544K Air System – 5-gallon tank + constant duty compressor for reliable performance
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8–10 Seconds of Honk Time – Long, deep, resonating blast
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Dual Utility – Air system can be used for tires or air tools
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Clean Integration – Professional install with show-quality appearance
BUILD YOUR NIGHTMARE EDITION
The Shocker S6 544K Nightmare Edition delivers maximum volume with extended honk times and professional performance. Get everything you need for a complete, show-ready train horn system.
