The Kleinn Model 6890 Ultra BlastMaster Valve Upgrade Kit is specifically engineered for the Model 730 Demon triple train horn system to dramatically increase air flow and push your horn to unheard-of decibel levels. This high-performance kit provides everything needed to integrate an additional two VX6003 solenoid valves into your existing 730 Demon setup, giving each individual horn trumpet its own dedicated air source for maximum pneumatic efficiency. The comprehensive package also includes a heavy-duty 4-way splitter and premium 1/2" OD airline tubing with matching fittings, ensuring each horn receives an increased volume of air to maximize sonic output and deliver an earth-shattering blast.