Kleinn Air Horns 141-1 Black Compact Quad Air Horn has four black, corrosion resistant all metal trumpets 13-inches, 11-inches, 8-1/2-inches and 7-inches in length. Think fire truck or ambulance air horn but louder. The compact air horns can fit in almost any vehicle and deliver the big sound you need. Easy to fit, glistening chrome finish and extreme truck horn sound; this air horn is the complete package. It requires an onboard air system up to 150-PSI for operation (not included). There is a Vortex 4 – 12-volt electronic air horn solenoid included. Too Loud? Too Bad.
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