So GIXERHP and I ordered these these on April 1st and we finally got them. We installed mine yesterday and then I rode it home about 75 miles mostly highway. Well, it's LOUD, What?, I said it's LOUD, Huh?, I SAID IT'S FUGGING LOUD!!! Oh sorry, that is what the cellphone conversation sounded like with John after i got home. It is not obnoxious it just has this 2 stroke GP bike ringing in your head sound that really is kinda loud. Get it? At 5000 RPM's which is right around 85-90ish in 6th the thing is deafening to ride. I noticed that people were turning to see what was coming rather than just looking as I went by. At speed on the highway I came upon a Jeep Wrangler with the top off and at about 1000 feet away the guys in the backseat turned around and watched me the whole time. They heard me coming and they were top down on the freeway... Hey, it's loud, but I like it. We had to make a bracket for it as the supplied ones were nowhere to be found. It looks like it may wind up with passenger shoe melted onto it, we'll see after the first ride with my kid on the back...