Chris K. didn’t just upgrade his 2021 GMC Denali, he transformed it into a rolling powerhouse of sound. With the S6 Shocker XL Train Horns paired with our 228H Air System, Chris created a setup that doesn’t just turn heads, it snaps necks!
The S6 delivers that unmistakable deep, locomotive tone, and with six perfectly aligned bells, thanks to the Shocker XL Train Horn Mount and horn extension upgrades, this build looks just as aggressive as it sounds.
From the clean installation to the street-shaking volume, Chris’ Denali is a textbook example of how to do train horns right. Power, precision, and polish all in one.
Key Features:
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S6 Shocker XL Train Horns – Six-bell configuration for intense, authentic train sound
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HornBlasters 228H Air System – 2-gallon tank and VIAIR compressor for fast recovery and reliable blasting
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Shocker XL Train Horn Mount – Clean and aligned six-horn setup
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Horn Extensions – Perfect alignment for a streamlined, aggressive aesthetic
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Show-Quality + Street Power – Looks incredible and sounds even better
Ready to Go Bigger and Louder?
Build your truck like Chris with the S6 Shocker XL kit.

