Jagjit's 2021 GMC Sierra 1500 AT4 is now making serious noise thanks to the Conductor's Special 244K Nightmare Edition Train Horn Kit. Using the innovative Spare Tire Delete bracket, the factory spare tire location was transformed into a home for the legendary Shocker XL Train Horns.
This kit delivers a clean, seamless installation and turns the Sierra into a sonic powerhouse. The Shocker XL train horns, hand-tuned to match real locomotive chords, are second only to the horns on an actual train. When Jagjit presses that button, everyone around knows it.
The HornAir 244K air system provides 5-7 seconds of honk time with a 2-gallon tank and powerful compressor. The system refills from 110 to 150 PSI in just 35 seconds, ensuring quick recovery between blasts. The Nightmare Edition's blacked-out hardware gives the installation a stealthy, aggressive look that complements the AT4's rugged styling.
Key Features:
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Shocker XL Train Horns – Hand-tuned for authentic train sound
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HornAir 244K Air System – 2-gallon tank and powerful compressor for 5–7 seconds of honk time
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Spare Tire Delete Bracket – Clean underbody install that fits in the factory spare location
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Nightmare Edition Finish – Blacked-out hardware for a stealthy, aggressive look
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Utility Beyond Sound – Onboard air system can inflate tires or power small air tools
GET THE NIGHTMARE EDITION POWER LIKE JAGJIT
Transform your Sierra into a sonic powerhouse with the Conductor's Special 244K Nightmare Edition. Experience the legendary train horn sound with stealthy black hardware that matches your truck's aggressive styling.
