Need to make a big noise, but only have a little room? These train horns can fit in almost any vehicle, but deliver the big sound you need. Don't be fooled by their size – they may be small but they pack a punch that can rival any air horn out there. Easy to fit, glistening chrome finishing and tuned train horn sound; these horns are the complete package. Our specialized compressor kits will make you horns really sing. This system comes complete with a 110 PSI 12-volt compressor, air tank, pressure switch and mounting hardware. These compressor kits are built for performance and easy installation.