Unicycle flat

Hallo I have ride a lot of strret and i what to try flat kan a use the samme bike or should I put som new parts on ?

That entirely depends on what kind of uni you’re using right now. Not that I’d be much help, but nobody else will either, unless you give us some information about what you’re riding.

I can’t tell if it’s a joke?

^ +1

Perhaps if you gave us more info, we could answer your question more thoroughly.