KN Planning Super Dio Super DIO AF27 AF28 Normal Type Sports Changer MufflerThe exhaust sound is a little louder than the stock one, but it doesn't bother me. The stock exhaust is good, so if you replace it with the genuine one, the running will be a little better. It can also be used as a repair part for those whose genuine muffler is clogged or has holes. *Compatible with our H1001 60cc bore up kit. AF23 G Dash AF18 AF25 DIO SR SP AF27 AF28 Super Dio SR ZX Tact (AF24 AF30 AF31) Cannot be installed on TACT AF09 When