My first technical question: Does anyone know of a more effective muffler/exhaust system for a '19 Coolster 150? I would really prefer one with a USFS approved spark arrestor. In fact, does anyone know of a spark arrestor that can be grafted onto the stock muffler?

 

I found a spark arrestor that will work. Two Brothers Racing 005-106S M-7 USFS Spark Arrestor, purchased from SoCAL Powersports via Amazon. With some drill/Dremel work to clearance the cap's mounting bolts it fits fine. Now I am legal for the state OHV park.