2013 GMC Sierra with Mini Outlaw 127H Train Horn Kit installed
2013 GMC Sierra with Mini Outlaw 127H Train Horn Kit installed
2013 GMC Sierra with Mini Outlaw 127H Train Horn Kit installed
2013 GMC Sierra with Mini Outlaw 127H Train Horn Kit installed
2013 GMC Sierra with Mini Outlaw 127H Train Horn Kit installed
2013 GMC Sierra with Mini Outlaw 127H Train Horn Kit installed

2013 GMC Sierra

Mini Outlaw 127H Train Horn Kit

SOUND SAMPLE:

Jonathan T. just took his 2013 GMC Sierra to the next level with our Mini Outlaw 127H Train Horn Kit, and the results are nothing short of epic. This clean and powerful truck now delivers that unmistakable HornBlasters sound, proving that even a compact setup can pack an incredible punch.

Why Jonathan Chose the Mini Outlaw 127H Kit

The Mini Outlaw 127H is built for drivers who want serious volume without sacrificing space. Jonathan’s Sierra now has a horn system that not only turns heads but also commands attention in traffic and at shows.

This setup is:

  • ✅ Compact & LOUD – Small footprint with big sound

  • ✅ Easy to Install – Designed for a straightforward setup

  • ✅ Legendary HornBlasters Sound – The real train horn experience

Jonathan’s Sierra now stands out on the road like never before, blending a clean install with raw, commanding sound power.

Key Features of the Mini Outlaw 127H Train Horn Kit

  • Mini Outlaw train horn with compact 16.5" x 14.5" x 11" dimensions
  • 1.5-gallon 4-port air tank for approximately 4-5 seconds honk time
  • 2L compressor with 18-amp max draw and 25% duty cycle at 100 PSI
  • 120 PSI operating pressure with 90 PSI restart for consistent performance
  • Quick 35-second recovery from 90 to 120 PSI between honks
  • Compact design ideal for tight mounting locations

GET LOUD IN TIGHT SPACES

The Mini Outlaw Train Horn 127H delivers authentic train horn sound in a compact package. Perfect for installations where space is limited, this complete kit includes everything you need for powerful, space-efficient train horn performance.

UP TO 1500% LOUDER

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UNLIMITED HONKING

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ZERO
DELAY

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CAPABLE ONBOARD AIR SYSTEM

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HornBlasters Shocker S6 544K Nightmare Edition Train Horn Kit

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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 2L 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.)

Test Your Train Horn Knowledge

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Train Horn FAQ

Yes, the Mini Outlaw 127H Train Horn Kit is a complete train horn system. It includes the Mini Outlaw train horn, 1.5-gallon 4-port air tank, 2L air compressor, hoses and fittings, wiring, pressure switch, and all mounting hardware needed for installation. Everything you need is included to get your train horn system up and running right out of the box, making it perfect for truck installations like the GMC Sierra where space is at a premium.

The Mini Outlaw 127H features a compact design with the horn measuring 16.5" by 14.5" by 11" and the air source unit measuring 15.2" by 5.9" by 12.8". This small footprint allows the system to fit into tight mounting locations without sacrificing power or sound quality. The compact design is perfect for truck installations where space is limited, delivering serious volume and that unmistakable HornBlasters sound in a space-efficient package.

The Mini Outlaw 127H features a 1.5-gallon 4-port air tank that provides approximately 4-5 seconds of continuous honk time. The system operates at 120 PSI maximum working pressure with automatic restart at 90 PSI, ensuring consistent performance. Recovery from 90 to 120 PSI takes about 35 seconds, making it ready for frequent use while maintaining that powerful train horn sound in a compact package.

The Mini Outlaw 127H includes a 2L air compressor that operates on 12-Volt DC with a maximum amp draw of 18 amps and a maximum duty cycle of 25% at 100 PSI. The compressor fills the 1.5-gallon tank from 0 to 120 PSI in approximately 2 minutes 10 seconds, with recovery from 90 to 120 PSI taking about 35 seconds. This provides quick readiness for frequent use while maintaining efficient operation.

Yes, the onboard air system in the Mini Outlaw 127H Train Horn Kit is versatile and can be used for more than just train horns. You can use it to inflate tires and run small air tools, adding practical utility to your build. The 1.5-gallon tank and 2L compressor provide reliable compressed air for both horn operation and utility functions, making it a dual-purpose system that maximizes the value of your installation.

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