Jerry's 2015 GMC Sierra 1500 SLT with Shocker Mini Outlaw 127H Train Horn Kit overview photo 1

Shocker Mini Outlaw 127H Train Horn Kit hardware staged on Jerry's GMC Sierra SLT photo 2

Compact train horn bells and bracket mounting on Jerry's 2015 GMC Sierra 1500 photo 3

Air tank compressor or air line routing for Mini Outlaw horn install on Sierra SLT photo 4

Completed Shocker Mini Outlaw 127H Train Horn Kit on Jerry's 2015 GMC Sierra 1500 SLT photo 5

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Featured Install

Shocker Mini Outlaw 127H Train Horn Kit

Jerry's 2015 GMC Sierra 1500 SLT

Sound Sample

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Owner Jerry

Year 2015

Vehicle 2015 GMC Sierra 1500 SLT

Jerry R. just turned his 2015 GMC Sierra 1500 SLT into a road-commanding beast with the Mini Outlaw 127H Train Horn Kit. This compact horn system may be small in size, but it delivers a bold, unmistakable blast that guarantees attention wherever he goes.

Designed to fit tight spaces while still bringing true train horn performance, the Mini Outlaw is a perfect match for Jerry’s clean and efficient build. Whether he’s pulling up to a show or cruising down the interstate, Jerry’s Sierra is now bringing the noise in a big way.

Feature Highlights

Mini Outlaw 127H complete train horn kit
1.5-gallon, 4-port air tank (compact footprint)
12V compressor, ~18A max draw
120 PSI operating pressure, 90 PSI restart
Fast refill: ~2:10 (0–120 PSI), ~0:35 (90–120 PSI)
Compact design for tight installations

HornBlasters Shocker S6 544K Nightmare Edition Train Horn Kit

PRODUCT

PRICE

Sold out

UP TO 1500% LOUDER

UNLIMITED HONKING

ZERO
DELAY

CAPABLE ONBOARD AIR SYSTEM

ADD BIG SOUND IN SMALL SPACES

Choose the Mini Outlaw 127H to get authentic train horn tone without giving up cargo room. Compact, capable, and easy to integrate.

SPECIFICATIONS

Part Number	HK-MC3B-127H
Operating Pressure	120 PSI
Restart Pressure	90 PSI
Voltage	12-Volt DC
Horn	HornBlasters Mini Outlaw Train Horn
Horn Length	16.5" (419.1mm)
Horn Width	14.5" (368.3mm)
Horn Height	11" (279.4mm)
Horn Weight	10.9lbs (4.95kg)

Air Source Length	15.2″ (386.08 mm)
Air Source Width	5.9″ (149.86 mm)
Air Source Height	12.8″ (325.12 mm)
Air Source Weight	13.75 lb (6.24 Kg)
Air Tank	1.5-gallon 4 port air tank
Volume	1.5 gal (6.6 L)
Air Compressor	275C air compressor
Max Amperage	18 amps
Maximum Duty Cycle	25% @ 100 PSI

FILL RATES

1.5 GALLON TANK	FILL RATE
0 to 120 PSI	2 min. 10 sec. (±10 Sec.)
90 to 120 PSI	35 sec. (± 5 Sec.)

Train Horn FAQ

A compact complete train horn kit with horn, 1.5-Gallon Air Source Kit, and compressor—designed to fit tight spaces without sacrificing sound.

120 PSI operating pressure with automatic restart at 90 PSI for consistent performance.

1.5-Gallon, 4-poty. Fill time ~2 min 10 sec from 0–120 PSI; ~35 sec from 90–120 PSI.

12V DC compressor (2L/275C class) with ~18A max draw and 25% duty at 100 PSI.

Approx. 16.5" L x 14.5" W x 11" H, 10.9 lb. Built for durability and strong, authentic train horn tone.

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