There are a few local places around that carry Chinese quads, though I'm not certain which carry exactly what.
Saga in Langley may be able to help you out, and you should be able to email them a picture of what you need and they will check if they have it. They carry atv's but don't show them on the site,
http://www.sagacanada.ca/ they've been good to deal with when I have been there, and have a good stock of parts....