Train horns. Real presence.
AggressorAir Horns
Train horns, compressors, complete kits and essential parts. Build your sound with Aggressor at 12 Volt Outlet.
Build Your System
Shop Aggressor by Category
Horns, air supply, matched kits and the parts that bring it all together.
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Horns
Choose your horn, finish and sound.
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Compressors
Find the air supply for your system.
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Horn + Compressor Kits
Start with a horn and compressor pairing.
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Parts
Find the right supporting components.
Explore the collection and narrow your choice.
Aggressor Air Horns, Train Horn Kits & Compressors
AGGRESSOR AIR HORNS are built for strength, reliability, and long-lasting performance. With powerful air horns, high-output compressors, pressure-tested components, and flexible designs, AGGRESSOR AIR HORNS give drivers the sound and confidence to cut through the noise.
Shop the Aggressor lineup at 12 Volt Outlet by the same four categories used by the brand: Horns, Compressors, Horn + Compressor Kits, and Parts. Whether you are starting a new train horn installation or selecting a replacement component, these collections make it easier to find the equipment your build needs. You can also browse all Aggressor train horn products together.
Choose Your Aggressor Horn
The horn is the sound-producing part of the system. Browse Aggressor air horns to compare the individual models, finishes, trumpet layouts, mounting dimensions, and air requirements shown on each product page. A horn-only purchase is different from a horn and compressor kit, so confirm which supporting components are included before choosing your setup.
Pair Your Horn with the Right Air Supply
A compressor supplies the compressed air that an air horn system needs. Explore the Aggressor compressor collection for the available compressor and tank assemblies. Compare the specific unit's operating voltage, tank capacity, pressure, dimensions, and installation requirements against the horn and the space available in your vehicle. Do not assume every compressor and horn combination is interchangeable.
Start with a Horn + Compressor Kit
Aggressor Horn + Compressor Kits group a horn with a compressor assembly in one product. This is a straightforward place to start when you need both core components. The kit collection includes different configurations, so review each listing's included items and specifications rather than assuming every kit contains the same wiring, hose, fittings, or installation hardware.
Find Air Horn Parts and Replacement Components
The Aggressor parts collection brings together the brand's available service and installation components. Match the exact part number, connection type, dimensions, and compatibility information to your existing system. Choosing the correct hose, valve, or pressure-related component matters just as much as choosing the horn itself.
Aggressor Air Horn Questions
What is the difference between a horn and a complete kit?
A horn listing is for the horn assembly described on that product page. Horn + Compressor Kits combine a horn with a compressor assembly. Always check the individual listing for the exact included components and any additional items your installation requires.
Will an Aggressor train horn fit my vehicle?
Fit depends on the selected model and your installation, not just your vehicle's year, make, and model. Check mounting space, horn and tank dimensions, power requirements, air-line routing, and the manufacturer's installation instructions. Do not assume universal fit or that every mounting location is suitable.
Can I replace one component of an existing system?
In some cases, a matching replacement part can be selected from the horn, compressor, or parts collections. Verify the exact model and manufacturer compatibility information first, including the required pressure, fittings, and electrical specifications.
What should I check before installing or using an air horn?
Follow the instructions for your specific equipment and use a qualified installer when needed. Check applicable vehicle-equipment and noise rules where you plan to use the horn. High-output horns should be used responsibly and never directed toward people or animals at close range.

