I just received a Simonini Calibrata exhaust pipe in the mail from treatsHQ. It’s by far the most monstrous pipe I’ve seen yet for the Vespas. It is hand made and is very hard to obtain. At least in the states. If you don’t mind waiting, I think you can order them from cycle-tech.com. This pipe won’t do for a stock setup. For it to really shine, you need a kit on your bike. I will be going over case matching and kitting as soon as I rip mine apart.
If you are looking for a pipe for a stock engine. I would recommend the Polini Country pipe. Some would say, this pipe sucks. Honestly, any cheap performance pipe will do for a stock bike. The max you will gain on a Vespa is 5mph. Which is pretty awesome. If you can’t decide on which is best, don’t get one as huge as this Simonini and you’ll be fine. The Polini is on top in this pic.
Btw, new banner on the way, thanks to heff-rock 
More info about that soon.
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I’m the first to comment.. Sweet.
Comment by robm January 5, 2009 @ 11:15 pmi really like that pipe on my 80cc pinasco!
Comment by terrydean January 6, 2009 @ 5:49 pm