I have seen one Magician using the same eBay CRF230 exhaust that us Hawk owners use. While it does fit, I do believe it has to be modified a bit for the muffler to work, and you can tell by looking that it isn't really meant for the bike. It's a little on the long side.
There are a couple of exhausts made for the Magician style bikes that can be found on TaoBao. This OTOM exhaust is one, and comes with a removable silencer.
http://www.engtaobao.com/item/taobao/547695211685.html