affordablegokarts type this in your search engine and go to the web site, im on my phone right now so I can bounce around to site easily are copy and paste links or I would, I know they have a good bit of parts and pieces upgrades and such, I ve done business and they are good people.
Shan
Edit: just went to web site above and yes they have exhaust flange for $8.50 just scrool down and look for 79cc parts on the far left side of the home page scroll down about two thirds the way down and you'll see it.