Model HK9-Slimline Triple Train Horn Kit

$ 1,070.95

ProBlaster™ Complete Ultimate Triple Train Horn Package

Our biggest train horn kit! The HK9-Slimline has all the same features as the HK9 kit but includes a slim design 3-gallon air tank and not the larger 5-gallon tank. The slim design tank offers more mounting options on small and mid-size trucks and SUVs. The Demon™ Model 730’s massive and detachable XCR 2.0™ spun steel trumpets (18.25”, 14.75”, 10.5”) allow tons of installation options. Includes a fully submersible waterproof high output 150 psi, 100% duty compressor and tire inflation kit with storage bag.

The 730 can be upgraded by adding the Ultra BlastMaster™ valve upgrade (P/N 6890) – making it the loudest, largest and most aggressive train horn on the market.

Package Includes:

  • The Demon™ Triple Train Horn
  • VX6003 High Performance Air Valve
  • 150 PSI Fully Submersible Waterproof Air Compressor
  • 3-gallon Slim Design Air Tank – Made in USA
  • Pressure switch & Brass Air Fittings
  • 12 ft high pressure nylon air tubing & Horn Button
  • 35′ tire inflation coil hose
  • Wiring/Installation Kit



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