My son and I are going to ride an enduro (Pine Cone kids ride) with his 125x2 pitster, but I'm not sure if the stock pipe will pass the 94db here in Michigan. I did make a screen for it that works pretty good for the spark arrester (hope that flies) I wondered if anyone has come up with anything or way to quiet down the stock pipe without buying a new pipe. Does getting extra baffle material and stuffing it in there help or cause more problems. I've been able to just stuff something in there and pass tech and then when DNR leaves I put it back to stock. I don't think it's that loud and I ride right behind him. Any help or ideas would be great...Thanks again I know I asked this when I got his bike but was hoping there was something new out there.