Either 2 bros, micron, d&d, or jardine. It is in very good condition . I am looking for a different sound. I like the sound of the 2 bros best. I saw a couple on eBay but would prefer to not spend any $. I probably will though. I saw a d&d for $150. Bike is a 99 cbr900. Bought it used last yr. and never really cared for yoshi