It does come with a muffler, but from what I have heard you are better off upgrading to a different muffler, such as the revolution, for like 35 bucks and the heli will fly much better. I don't, know why exactly, b/c I saw one fly with the stock muffler this past weekend and it looked fine, but that is what I was told so I have the revolution on mine and expect first flight this weekend!