Yup it just replaces the baffle. I was considering doing exhaust but couldn;t justify the cost versus the type of riding I do. Not to mention the sound gets to some private land owners. So I settled for a cheaper alternative compromise and bought a insert instead.
The stock insert is so small that I can't even stick the tip of my pinky finger in it. I'm not kidding either!!
The PMB insert increase throttle response while adding a deeper tone to the exhaust. Keeps it below 96db but throatier than stock for sure. Stock insert my bike almost sounded like a extremely corked up 2 stroke trail bike haha. WR comes very corked up from the factory compared to the YZF.
I'll have pics and vids up soon in another thread.
