This from Scooterwest website:
Anyone who's removed their own rear tire on a Vespa GT/GTS/GTV/Super or Piaggio 250/400/500cc knows how difficult it can be to get the exhaust back in place once the tire is back on. It's a down-right miserable experience trying to keep the exhaust bushing in place while struggling to mate the collapsed collar of the exhaust back to the header. Have you ever stopped and thought there must be an easier way?
Now with our specially designed Exhaust Expander, you won't have to fight installing the exhaust on your Vespa GT/GTS/GTV/Super or Piaggio 250/400/500cc any more.
With the Exhaust Expander, the compressed collar of your exhaust gets perfectly returned to its round and expanded shape. This invaluable tool is easy to use and will save you loads of time and misery. I love tools that make my life easier, and after you use one of these, you'll find yourself recommending one to everyone you care about who's been in the same situation.
The range of this tool is 1"-1¾."
See their excellent exhaust replacement video showing the use of this tool: Here.
Best
Miguel
