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Includes: 4003 Air Valve, inlet & outlet fitting, and 12FT 1/2" tubing.
The more air that gets in to your horn the higher the decibel output will be. These upgraded Vortex valves have a higher air flow than the standard Kleinn valve and will make the horns louder. The upgrade kit will also make Kleinn horns compatible with higher pressure systems. The Vortex valves have working pressures that range from 250-350 PSI.
Image for representation only.
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