None of the manufactures are making a spark arrested exhaust that meets 96dBA yet. I had an extra spark arrester screen from a Pro Circuit exhaust, to install you need to drill out the rivets and remove the end cap and muffler core (a pain to get apart!). Then you will need to Dremel off part of the pipe from the end cap that inserts into the muffler core (about 2-mm shorter than flush with the end of cap, or "about" 15 -17 mm total) . File smooth, insert spark arrestor screen (sue some high temp silicone on the screen only where it will touch the pipe if it is not a temporary solution). Also this did slightly reduce the noise output, no problem with power output, as I had no problem wheeling up the street using 1/2 throttle.
And for anyone interested in my opinion of power for a play bike, if I can keep up with full size bikes with my son's KLX 125 L at the Prairie City practice track I will embarrass most on this bike.