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Frequently Asked Questions
What comes in a complete kit?
Every kit here, air horn or train horn, ships as a full system: the horn, an air tank, a compressor, air line, a pressure switch, PTC fittings, wiring, and mounting hardware. That is what separates this collection from stand-alone train horns, which assume you already have onboard air. Across the 47 kits the components scale with the horn, so a compact 2-Chime kit and a Shocker S6 544K contain the same categories of parts at very different sizes.
Will a complete kit fit a car rather than a truck?
The horn is rarely the limit; the air system is. A full kit needs a home for a tank and a compressor, so on a car you are looking at trunk floor, spare-tire well, or behind a wheel liner. Compact kits such as the 2-Chime and 4-Chime Air Horn Kits are sized for exactly that, while the larger train horn kits assume a truck bed or frame rail. Measure the tank space you actually have before choosing.
How do I choose between an air horn kit and a train horn kit here?
Decide on the sound first, then the space. Air horn kits use shorter trumpets and a sharper note, which packs into smaller vehicles. Train horn kits use longer trumpets tuned to a chord for the locomotive tone, and need more room. Because this collection carries both, you can compare them side by side; the deeper the tone you want, the more mounting space you should plan for.
How much does a complete kit cost?
Kits in this collection run from $269.99 for the 2-Chime Air Horn Kit up to $1,219.99 for the top Shocker S6 544K, with the Flatlaw and Mini Outlaw near $369.99 and the Outlaw at $499.99. Price tracks the size of the air system and the horn far more than it tracks the badge, so a bigger number mostly buys more tank, more compressor, and a larger horn.
Do I need to buy anything else to finish the install?
No. The kit is the complete system, so you supply basic hand tools and a mounting location. If you already own an air system and only want the horn, shop the stand-alone horns instead.
Can I upgrade a kit later with a larger tank or a different horn?
Yes. The horn, tank, and compressor are separate components joined by air line, so any of them can be swapped later. The usual upgrade is a larger air tank for more honk time, since that does not require changing the horn. Keep fittings and line size consistent when you swap parts.