Posted by Russ/Wyo on Tuesday, January 11, 2005 at 6:37PM :
In Reply to: Spark arrester recommendation posted by Northern Calif Dave on Tuesday, January 11, 2005 at 3:06PM :
Super Trapp used to make a spark arrestor / muffler accessory for motorcycles. I don't know if they're still in business, but I've used their products and they work very well.