NEW SIP performance

someone has information on new SIP performance for PX 125-150?
it will be mounted on polini 177


as far as concern the low rpm they are very similar, but I really like the SIP with the 177 Polini, it works really well with it. The Scorpion has just a little more on the highest rev.

ciao AdrianoPX,

to say it better here is where I mainly write and rarely I write in the VOL.


how to go in the low regimes?

excuse for gramatically errors but i’m italian [:D]

the problem it was, i’ve ordinated Scorpion exaust but is not avaiable, then i’ve ordinated NEW SIP performance without knowledge how to go in lower and middle regimes…

we curare… non stavi sul forum di Vespa on Line qualche tempo fà?


See my post over the last few days, just bought a SIP performance and running a 125 jet on Polini 177 without porting work done.

Had some problems initially but once I applied the correct jet the scoot goes like a rocket…well pleased.