Upgrade your Model 230 Beast train horns with the Kleinn Model 6885 BlastMaster Plus valve upgrade kit, engineered specifically to maximize airflow and push your acoustic output to unprecedented decibel levels. Designed for systems utilizing the VX6003 all-brass solenoid valve, this high-performance upgrade package provides all the essential plumbing, fittings, and hardware required to seamlessly integrate an additional two VX6003 solenoids into your existing setup. By adding two more solenoids, the BlastMaster Plus allows each individual horn trumpet to have its own dedicated, high-flow air source, dramatically increasing overall air delivery and unlocking the absolute maximum volume potential of your Beast train horn system.