describes the Saito 100 muffler. Has anyone tried any other muffler with success? I notice the Saito .82 also uses a muffler with a 12mm thread size. Assuming the pitch is the same, has anyone tried one of these on the 100?

for the 12mm Saito's, there is an angled muffler and a straight muffler that work great on the 100.

There are also some different tube exhaust pipes

You can also get a Turbo muffler, they are advertised in the market place.

There are also three different 12mm pipes available from Saito Straight all thread, 15 degree and 30 degree angled jobs