FVRITO Performance Exhaust Muffler Expansion Chamber Pipe Silencer Gasket for 2 Stroke 50cc 66cc 80cc Engine Gas Motorized Bicycle Motor Bike Black

This is the setup I run on all three of my builds. It's a good, cheap expansion chamber exhaust and a stock kit muffler to quiet it down (a good expansion chamber is loud). I have three different frames and no fitment issues. I've included a link to the pipe I run, as an example. Edit: The rider is also well away from the exhaust fumes. https://a.co/d/0dH1B5Yq