If you look at the exhaust baffle in the end of the exhaust pipe there is a pipe that can be removed from the baffle. I dont know if this pipe/tube fits all the way inside the baffle or if it pokes out a bit. I do know that a washer covers the end of it and there is locknut over it. Thanks.
I attatched a photo from the moped junkyard. I am talking about the tube that fits inside the baffle.