Buddy of mine(GTWarrior on here) came upon a silver 109 with the sideburners on it. He said that all I can say is that they have a unique sound. He said that when he heard them the guy was hard on the throttle and the DID NOT have a deep sound. He said they were rather high pitched. Said it sounded more like a v-twin sportbike than a true cruiser. Mine are supposed to be here today, so lets see.