Where or who makes aftermarket mufflers that i can put on my motor?

I only have seen aftermarket for the gx670 and smaller single cylinder go kart engines. I have did some research on the buggies world forums and sites. The only one i found for my 24 Honda is a ezgo buggy and I would have to have cut and fabbed for MM use. So you would have to have a custom job done; which you could use factory flanges, have tubing welded to that then add some silencer for a dual exhuast.

I think you can get aftermarket exhaust from SETX or EVT
There was a fella at North Florida mud motors makin duals for Hondas

Hope that helps good luck

Paul is correct, there used to be an advertisement on their website (NOrth florida MM) showing a 24 honda with the dual exhaust, but it is not shown anymore.

I called em last time and asked them about the duals. Think the guys name is Matt??