KN Planning Remote Control JOG Jog Remote Control JOG ZR Aprio JOGZII Muffler SA16J Post-regulation Muffler Normal Type Sports MufflerIt is a genuine muffler type. The exhaust noise is a little louder than the stock one, so it can be driven through the air a little better than the stock one. If you replace it with a genuine one, your 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. Since it does not have a catalyst, the exhaust will be better compared to a normal muffler with a catalyst. Muffler body