MOPED ARMY

I looked at the gears in the tranny and don't think it is at all practical to try and re-gear that way. Should have guessed based on the fact that few have done it, lol.

So, if the easiest route is to fit a larger tire, is there one in particular that works well. I have heard of entire rear wheel assemblies being replaced- is that what you mean? If so, what rear wheel fits the express with little/no mods? Thanks.