Honda292 Posted March 19, 2010 I have just got a new FMF Q4 slip on for my 10 model 400 exc-r. But I think it is a power core muffler with the Q4 stickers on it !!!!! It is straight through, no baffles etc with the removable spark arrestor in the end. Its loud. My question is do the Q4 mufflers have baffles or are they staight through ??? Share this post Link to post Share on other sites
ktmfred300 Posted March 19, 2010 Doesn't sound like you got a Q. They are very quiet and you can see the turbine S/A at the back. Share this post Link to post Share on other sites
