Wolo BIG BAD MAX air horn uses the same proven patented technology and design as the original Bad Boy It has a sound chamber designed to create a deep big rig sound that produces a horn sound three times louder than factory horns The sound chamber has also been engineered to allow the user to clean any road dirt or dust, without any special tools, assuring a powerful and reliable horn for the life of the vehicle The one-piece patented design requires no hoses like conventional air horns Easily installs with one bolt that is provided Purchase Wolo Motorcycle wiring kit 561-126 to make installtion a breeze