Equip your truck with the Kleinn 401 direct-fit dual chrome-plated roof-mount air horn system, featuring two all-metal trumpets measuring 15 inches and 13 inches in length to create a deafening blast of over-the-road fury. Engineered for universal semi-truck and commercial vehicle applications, this premium roof-mounted dual horn configuration delivers an authentic big-rig tone, producing a massive 152.1 decibels of sound at 150 PSI. Designed for custom external mounting, this high-performance horn kit requires a pressurized onboard air system, a manual hand-pull air valve (Model 310 or 311), or an electronic solenoid valve to operate. For a proper and leak-free setup, the installation requires a Model 330 Roof Mount Air Horn Fittings Kit, providing the ultimate balance of glistening chrome style and serious acoustic presence that heavy-duty custom truck builds count on.
For orders placed before 7am AEDT, we endeavour to process the same business day. Orders placed after 11am AEDT will be processed the next business day.
During sale events and new collection launches, there may be a slighly longer processing time.
All Auguste orders are hand-picked and packed with love from Byron Bay, Australie.
You can choose between a refund or a credit note on full priced items.