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Kleinn Air Horns is a U.S. manufacturer of extremely high quality air horns, train horns, complete onboard air and air horn systems. Kleinn's focus is to bring the finest quality pneumatic systems and components to the automotive aftermarket – worldwide. Kleinn is constantly developing new 100% bolt-on, vehicle-specific systems for today's most popular vehicles. Kleinn also carries a complete line of air compressors, air tanks and related pneumatic accessories for cars, trucks, SUVs and everything else with a 12- or 24-volt power source.