300DB Train Horn For TrucksDominate All Terrains & Roads! Introducing the 300DB Train Horn for your truck! Our 300DB Train Horn For Trucks offers the loudest sound on the market, while also being the most compact Train Horn offered. The 300DB Train Horn is a high quality, high end train horn kit designed to integrate into as many trucks as possible. On top of that, the installation process takes less than an hour! Our Horn features an extremely powerful directly injected mini