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This pipe will greatly increase low end acceleration and moderately increase top speed
Excellent performing pipe
Pa50i models will need modifications done to the cylinder or to the exhaust flange
Even though these are incredibly rare in the United States
Vespa Piaggio Polini 4 Stud Reed Valve Race Cases - CDI cvt This pipe will greatly increase4 stud, reed valve engine from Polini for Vespa Ciao, Bravo, Grande, Si, etc These cases feature both 3 and 4 stud options so there are lots of choices there. They even left the rotary intake intact so you can block that off or use it. Comes with a block off plate for that. This is for CDI, not points. You have to use the factory CDI or the Polini ignition with these cases. These cases are set up for the 46mm kits. Can you use the smaller cylinders?
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