Would anyone know the db level for a stock 2003 KX500. In order to ride on Gov't land and participate in some Hare Scrambles in Ontario bike cannot be any louder than 94db. Almost certian stock 500 exceeds the limit. Does anyone know of any combination of stock/aftermarket pipe/muffler that would pass these noise restrictions. Riding areas in Ontario are closing due to noise, erosion, and illegal dumping issues. Dirt riders are being blamed for all of these. After an area is closed in order to preserve nature, developers pull in, cut the trees down and pave over the entire area. Hope for all this is not a common problem where you ride.