Hello! i have big problem with my neighbours, because my vespa its too noise :)
Now i have DR177 with head polini 177, carb 24/24, crank race Mazzuccheli and stand exhaust. My old Sito plus was too nise.
My engine no good work with stand. exhaust.
Which exhaust for my engine its better (silence, good performance): Abarth 2 pipe, LeoVinic, Polini,
I know Simonini racing its like enduro :)
Scorpion, JL, PM, SIP, TaffSpeed too expensive for me :(
Best regards!