I just put one on my BR. This may sound weird but there doesnt seem to be a big change in the sound level inside the cab, just a little bit. There is however a change in sound level outside the cab. I had my son drive it up and down the street and I could tell a pretty big difference in the level of sound. I don't have a lift on mine so my silent benz bolted right up perfectly. I put sealant around all the fittings also to make sure there wasnt any exhaust leak that could be heard. I had this same silencer on my last 4 wheeler and was pleased with it then. Now one thing I have noticed is a very slight loss of power when pulling a atv disk. It still pulled it fine, but I could tell a difference. It was definitely not enough to where I wanted to take it back off though. Hope this helps.