Please select a category: Brio Stebel Brio Horn Available in very loud, alternating high frequency, low frequency tone or very loud European emergency warning sound. Marine Stebel Marine Horn Sounds like a vintage car horn. Motorcycle and On/Off Road Stebel Tuning Horn Designed for severe usage in the motorcycle and on/off road vehicle markets. Trucks Stebel Truck Horn Very loud 300 cycle frequency. Sounds like a low, non-truck horn. Particularly suited for mounting "under the hood."