Tired of beeping your stock horn that sounds like a scooter or a golf cart? At 139dB (!) the air horns made by the Italian company STEBEL have 3 times the sound power of a typical OEM horn, loud enough to convince other drivers that there‘s a derailed freight train barreling down on them. The classic type is chrome-plated, perfectly suited for your shiny exterior motor finish. The black version is the choice of bikers who prefer that dark look. It perfectly blends into black motors. Stebel air horns are easy to install, no extra tubes, no trumpets, no special brackets, they can simply be fitted in the same place of the original horn. Must use the supplied relay.