I came across an old yamaha Rhino forum. Folks on there purchased scotch brite pot scrubbing material and put them inside the actual muffler of they’r Rhinos. So I figured I would give it a try for 1.89 at my local dollar general store. So I purchased 1 2 pack of stainless steal scotch brite pan scrubbers that are shaped like a round donut which is basically a bunch of wire wound into a ball.. you get the idea..
I removed my spark arrestors and slid 1 scotch brite into each of the dual exhaust holes just far enough in to get spark arrestors back in place. started up the machine and now have a noticeable reduction in exhaust sound, but still sounds good! As far as long term durability.. I cant say.. but being that our machines run lean from the factory, and a slip on flows much easier than stock, a little back pressure should be fine. I did ride the machine for about 20 minutes and didn’t notice anything different other than a more reasonable exhaust.
let me know your thoughts and or concerns.. have a good one!