After that I thought about how to remove the swirl shaped spark arrestor from the back of the muffler… I took a long socket extension and tapped it down in there to break the welds loose… I thought I could then pry it out, no luck I actually pressed it into the pipe further! I was able to use a long drill bit and drill a hole right in the center of it, its cone shaped by the way. Once I did that I took the drill and drilled the fins around the cone a little just to bend it up. I made a long wire hook and was able to work it out enough that I could get ahold of it with long needle nose pliers. If I did it again I would use a hole saw on a drill bit extension and cut it out, the welds did snap off fairly clean
You may be aware, lovewvmountains, removing the spark arrestor results in a bike illegal to operate in National Forests.
Maybe you never venture onto Forest Service roads or trails, but the regulation's no joke--an element of technical inspection at the forthcoming Shenandoah 500 Dual-Sport Ride, in George Washington National Forest, near you. And, an element of a Federal citation if caught on Forest lands without the device.
We remember what Smokey the Bear and Woodsy Owl say about forest fires!
Before-and-after mod dyno runs would be interesting.