This 2015 GMC Sierra 3500HD Dually Denali, presented by KEG Media at the 2018 SEMA Show, stands as a powerhouse of design, performance, and sheer road presence. Sporting 28" wheels, 40" Fury Tires, and a 12-16" Ultimate Air Ride Suspension Lift, the truck already commands attention—yet it's the Shocker XL Train Horns that elevate it to an entirely new level of dominance.

With its St. Patrick’s Day-themed color scheme, this custom Sierra Dually exudes individuality. But it’s the unmistakable blast of the Shocker XL Train Horns that truly sets it apart—announcing its arrival with a thunderous roar that’s impossible to ignore. Designed for extreme loudness and durability, these horns are the perfect sonic counterpart to the truck’s show-stopping visuals.


Key Features:

  • Shocker XL Train Horns – 147.7 dB of real train horn power

  • Bold Aesthetic Integration – Horns complement the truck’s green-themed show build

  • Custom Suspension & Wheels – 12-16" lift on 28" wheels with 40" tires

  • Built for SEMA – Designed by KEG Media and unveiled at the 2018 SEMA Show

  • Unrivaled Sound – Crisp, powerful tone that mirrors the truck’s aggressive build


Make Your Ride Heard from Miles Away
Upgrade to the legendary Shocker XL train horns and get the sound your truck deserves.

 

UP TO 1500% LOUDER

UNLIMITED HONKING

ZERO
DELAY

CAPABLE ONBOARD AIR SYSTEM


HornBlasters Shocker XL Train Horn AH-S4

PRODUCT

PRICE

$609.00
ADD TO CART
HornBlasters Shocker XL Train Horn AH-S4
$609.00
ADD TO CART

SPECIFICATIONS

Part Number AH-S4
Voltage 12-Volt DC
Horn Shocker 4 Train Horn Kit
Material High-Impact ABS
Horn Measurements Bell #1 19.50″ (495.30 mm)
Bell #2 16.25″ (412.75 mm)
Bell #3 14.75″ (374.65 mm)
Bell #4 12.75″ (323.85 mm)
Flare 5″ (127 mm)
Weight 4.5 lb (2.04 Kg)
Fitting Size ⅛″ M NPT
Requires 1/2" Port

Show Us What You’re Working With
Submit your horn install and get featured among the loudest trucks on the road. Click the button below to submit your install photos to our media submission form!