Audio Sample:

Battleship Horn Kit


Suggested Addons
Add Viair Air Compressor Bracket Tooltip
The Viair Air Compressor Bracket will allow you to mount your compressor upright and is compatible with Viair Compressor models 275C-485C.
Add Tire Inflation Kit Tooltip
Our Tire Inflation Kit includes a 30' Coil Hose, Tire Inflation Gun, Air Relocation Kit, Blow Gun, & a complete Air Accessory Fitting Kit!
Add 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 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 Gold Extended Warranty Tooltip
1 year add-on to existing warranty. Does NOT cover accidental damage, no advanced replacement.
Click here for more information!
+See price at checkout
Add Platinum Extended Warranty Tooltip
2 year add-on to existing warranty. DOES cover accidental damage and advance replacement.
Click here for more information!
+See price at checkout


We know why you're here. You're looking for the biggest, baddest horn on planet earth. Guess what? You found it!

The KM-135 Air Horn has no business being on a road vehicle. This horn is designed for battleships up to 656 ft. in length. BATTLESHIPS. Yeah. Aircraft carriers, that sort of thing. This is as deep and thundering of a sound we can offer. This is epic-tier horn blasting, not for beginners. 

We pair the Battleship Horn with an ample 5-gallon 8 port air tank. This tank was purpose-built for high flow applications. All those extra ports mean room for add-ons like a tire inflation kit, air suspension, or whatever your pneumatic needs may be. 

Powering the whole thing is a HornAir AC-2 compressor. It has plenty of power to fill this 5-gallon tank from 110-150 in roughly 2 minutes and 35 seconds (± 10 sec.).

  • Sheeeeeeeeeeeeesh!
  • Super rugged construction made from cast marine aluminum
  • Super loud - 143dB at only 120 PSI
  • Can be heard for up to 2.3 miles

**Units have to be delivered on a Pallet!! $125 Shipping fee will be applied after the order. Residential addresses that require a liftgate will be charged an additional $100 Fee.**

  • Part Number: HK-BS135-5HB
  • Operating Pressure: 150 PSI
  • Restart Pressure: 110 PSI
  • Voltage: 12-Volt DC
  • Horn: BS135 Battleship Horn
  • Horn Length: 42" (1066.8 mm)
  • Horn Width: 20" (508 mm)
  • Horn Height: 20" (508 mm)
  • Horn Weight: 45 lbs (14Kg)
  • Horn Material: Cast Aluminum
  • Air Tank: HornAir 5-gallon 8 port air tank
  • Tank Length: 20.5″ (520.7 mm)
  • Tank Diameter: 9.5″ (241.3 mm)
  • Tank Height: 11.5″ (292.1 mm) (With Legs)
  • Tank Weight: 20 lb (9.07 Kg)
  • Tank Ports: x7 1/2" NPT, x1 3/4" NPT
  • Air Compressor: AC-2 Air Compressor
  • Average Fill Time: 2 Min 35 Sec
  • Max Amperage: 25 amps
  • Maximum Duty Cycle: 33% @ 100 PSI
  • Air Compressor Length: 8.75" (222.25 mm)
  • Air Compressor Width: 4" (101.6 mm)
  • Air Compressor Height: 6.6" (167.64 mm)

5-Gallon Air Tank Dimensional Drawing

  • 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
    Shocker XL train horns are backed by our lifetime Manufacturer's defect warranty. The Viair air compressor is backed with a 1-year Manufacturer's defect warranty. The rest of the components are backed with a 2-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 Loss warning icon
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