Conductor's Special 844 Nightmare Edition Train Horn Kit

(Honking & Heavy Duty Pneumatic Use)


Rated 5.0 out of 5
12 Reviews

Add Dual Viair Air Compressor Brackets Tooltip
The Viair Air Compressor Bracket will allow you to mount your compressor upright and is compatible with Viair Compressor models 275C-485C.
Add Wireless Activation Remote Tooltip
Activate your horn wirelessly with our handy RF transmitter.
Add Tire Inflation Kit Tooltip
Our Tire Inflation Kit includes a 30' Coil Hose, Tire Inflation Gun, & Air Relocation Kit!
Add 1/2″ Electric Drain Valve Kit Tooltip
This kit has everything you need to drain your tank from the push of a button from inside the cab!
Add 220 PSI Digital Air Pressure Gauge Tooltip
Using a tank mounted sensor wired directly to your gauge, our 220-PSI rated Digital Air Pressure Gauge delivers unparalleled accuracy with microprocessor stabilized readings.
Add Shocker XL 6 Horn Upgrade Tooltip
Upgrade your Shocker XL Train Horns to a 6 horn set up. With the 2 extra bells and new 6 way manifold, you can now get a little bit more out of the Shocker XL!
Add Shocker XL Train Horn Mount Tooltip
Already have a spot for your onboard air system, but not sure where to mount the horns? Take the guesswork out of installation with our Shocker horn mount.
Add Gold Level Extended Warranty See price in cart
Add Platinum Level Extended Warranty See price in cart

Hear these horns now!

You can never have too much onboard air! More air means longer blast time for your horns, more air for your tires, airbags, power tools. With our Conductor’s Special 844 Train Horn Kit, you get all the air you could ever need. With 8 gallons of air being powered by dual Viair 444C Air Compressors, you never need to worry about not having enough air to get the job done again.

Our Conductor’s Special 844 Train Horn Kit features our legendary Shocker XL Train Horns, one of the loudest train horns you can buy. Hand-tuned to US Train Horn Chord, you get the tone and the volume of an authentic locomotive horn in a compact solution. Incredibly durable, our Shocker XL Train Horns are constructed from an ultra-durable fiberglass-reinforced ABS composite with stainless-steel diaphragm and backed by a lifetime warranty against manufacturer defects.

Powering our massive black 8-gallon 8 port tank are dual Viair 444C Air Compressors, giving you a system that's capable of blasting your Shocker XL Train Horn up to 20 seconds continuously and refilling in only 2 minutes and 30 seconds! Whether you want to get the attention of distracted drivers or have plenty of air to fill up a flat, our Conductor’s Special 844 Train Horn Kit is a complete system that makes sure you always have the air you need.

An increasing number of people are using this for more than just blasting horns! With a system like the Conductor's Special 844K Nightmare Edition Train Horn Kit, you can also use the air supply to:

  • Adjust Tire Pressure
  • Heavy Duty Pneumatic Use
  • Inflate Water Toys and Safety Gear
  • Supply Air to Load Leveling Bags
  • Supply Air for Differential Lockers
  • Blow up Kids Toys
  • And lots more!

    While the Conductor's Special 844K Nightmare Edition Train Horn Kit is a complete onboard air system that provides you with everything you need to get up and going, be sure to add on a Wireless Remote, Tire Inflation Kit, or an Electric Drain Valve kit to get the most out of one of the best onboard kits you can buy!


    This video shows our Shocker XL Train Horn in a third-party decibel test alongside your typical "air horn" honked side-by-side at the same pressure. As you can see, no one even comes close to the insane volume and tone of our Shocker XL Train Horns!
    • Extremely Durable & Loud!
    • Industrial Grade Stainless Steel Diaphragms
    • Extra Large Eight Gallon Air Tank
    • Heavy Duty Dual 444C Air Compressor
    • All-inclusive Train Air Horn Solution!
    • All Standard Mounting Hardware
    • Max Honk Time: 10 to 14 Seconds
    • Lifetime Warranty on Horns
    • It can be heard from miles away!
    • Horn: HornBlasters Shocker 4 Train Horn Kit
    • Part Number: HK-S4-844K
    • Horn: Shocker 4 Train Horn Kit
    • Material: High-Impact ABS
    • Horn Measurements   
    • № 1 19.50″ (495.30 mm) № 2 16.25″ (412.75 mm)
      № 3 14.75″ (374.65 mm) № 4 12.75″ (323.85 mm)
    • Flare: 6.5″ (165.1 mm)
    • Weight: 4.5 lb (2.04 Kg)
    • Fitting Size: ⅛″ M NPT
    • Tank: HornAir 8 Gallon Tank
    • Tank Length: 32.5″ (825.5 mm)
    • Tank Diameter: 10.5″ (266.7 mm)
    • Tank Height: 12.5″ (317.5 mm) (With Legs)
    • Tank Weight: 32 lb (14.51 Kg)
    • Compressor: Dual Viair 444C Air Compressor
    • Fill Time 0 - 150 PSI: 6 Minutes 40 Seconds
    • Voltage: 12 volts DC
    • Air Flow: 1.67 CFM
    • Max Amperage: 38 amps
    • Maximum Duty Cycle: 100% @ 100 PSI , 50% @ 200 PSI
    • Maximum Working Pressure: 200 PSI
    • Compressor Length: 11.5″ (292.1 mm)
    • Compressor Width: 4.30″ (109.22 mm)
    • Compressor Height: 6.5″ (165.4 mm)
    • Compressor Weight: 11 lb (4.99 Kg)
    0 3.53 25 0 100.0 25
    10 3.25 27 1.0 88.5 29
    20 2.97 31 2.0 81.3 33
    30 2.86 33 3.0 75.6 34
    40 2.72 34 4.0 70.6 36
    50 2.58 35 5.0 65.5 37
    60 2.47 36 6.0 59.0 39
    70 2.35 37 7.0 53.1 40
    80 2.19 38 8.0 47.7 39
    90 2.03 39 9.0 43.2 39
    100 1.90 40 10.0 38.8 38
    110 1.74 40 11.0 34.7 37
    120 1.65 39 12.0 30.6 36
    130 1.53 39 13.0 25.8 34
    140 1.41 38 14.0 23.8 33
    150 1.32 38
    160 1.22 37
    170 1.13 36
    180 1.00 35
    190 0.89 34
    200 0.85 33

    * Supply Voltage: 13.8 Volts

    0 to 150 PSI 5 min. 25 sec. (± 10 sec.)
    110 to 150 PSI 2 min. 05 sec. (± 05 sec.)

    * Supply Voltage: 13.8 Volts

    • Money-Back Guarantee/Refund Policy
      All merchandise unless otherwise indicated may be returned within 30 days from the shipment arrival date for a refund. A Returned Merchandise Authorization (RMA) number is required for all returns. A 15% restocking fee may apply. Additional deductions may be made to reflect the products current market value. These terms apply to all refunds. Most products are shipped with a refund/replacement guarantee period unless otherwise noted in the product listing. Customers must inform of any order discrepancy within 7 days from the invoice date so that we may investigate and resolve the situation accordingly.
    • Warranty
      Our Shocker XL Train Horns are backed by our Lifetime Manufacturer's Defect Warranty and the rest of the components in this kit are backed by our One-Year Manufacturer's Defect Warranty.
    • Satisfaction Guarantee offers our customers a 30-day satisfaction replacement or refund guarantee on all purchases, except when otherwise noted in the product listing.
    • Cross-Shipments will not cross-ship returned merchandise.
    • Physical Damage Policy
      Physical damage to any product purchased at will effectively void warranty coverage. Physical damage includes but is not limited to improper handling and/or any other type of damage sustained by irregular usage.

    Warnings & Notices

    Hearing Protection Required

    This product produces extreme loudness. Proper hearing protection must be worn at all times during its operation. Hearing loss or permanent damage may result from unsafe use. Use this product in a safe and responsible manner and at a distance of at least 100 meters from others. Never operate this product in a closed environment, in close proximity to living beings, or where prohibited by law.

    Safety warning icon

    This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to

    average rating 5.0 out of 5
    Based on 12 reviews
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    Customer photos and videos
    12 Reviews
    Reviewed by William Y.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5
    Review posted

    Extremely loud horns

    I installed these horn on my 2019 Chevy Silverado 2500hd and I put them where my spare tire goes. All the parts are well built and great craftsmanship. I added the 2 extra horns and made my own bracket. The 8 gallon tank fits perfect right next to my hitch receiver. This is a great product and you won’t be disappointed.

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    Reviewed by LaQuentin W.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5
    Review posted

    Big boy

    Haven’t had it installed yet, but damn glad I bought it!.

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    Reviewed by Nathan K.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5
    Review posted

    2017 f250 train horn install and load lifter

    Was a little work to get installed but it is so worth it. This thing is crazy stupid ridiculous loud . Love it. Ran bags off same Compressor

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    Reviewed by David H.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5
    Review posted

    Conductor Nightmare edition

    The kit arrive packaged nicely and no damage during shipping. The order was received quickly as it arrived 3 days after I place the order on Father's day. Happy Father's day to me!

    I planned all along to mount the tank, compressors and wiring on a piece of 3/4" PVC. I have installed this on my 2017 Ford Explorer and I sometimes need the third row seating so I wanted to make it easily removable.

    I mounted the horns under the front end forward of the wheels. I don't have fog lights so I mounted the valve in the left front area that the fog lights normally occupy. If I have problems with the horns getting damaged I may move them to the same area.

    I did buy locally some 90 degree swivel fittings instead of the straight connections provided for the main line connection to the tank and valve. It allowed for easier installation and a cleaner look. I also purchased a 90 swivel and some line to install the pressure gauge in the dash vs having it mounted to the tank

    I work out of this Explorer so I didn't want the compressors kicking on randomly while on the phone or talking to someone in the vehicle. So I have a switch to control power to the compressors. I also have a switch controlling power to my foot switch to control the horn valve. I did this in case I take it in for service, valet, my wife driving the vehicle etc.

    Since I have the tank mounted in the vehicle I ran a hard line with a valve and a hose to drain condensation from the system also.

    It's a nice kit. I think if…

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    Reviewed by Ric G.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5
    Review posted

    still undergoing install

    work a lot and like these horns so much want to make movable when I sell my now truck so seen this on youtube and like it 90% finished

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