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Just in: Hornit dB140 bike horn - BikeRadar
Review: 'Hornit' the super loud bike horn – CycleStuff
Hornit dB140 Bike Horn, Upgraded V3 Model, World's Loudest Bike Horn for Increased Rider Safety, Remote Trigger and Upgraded Mouning System Included (dB140) : Bike Horns : Sports & Outdoors - Amazon.com