On the Dyno: New BGM 177 cc Vespa kit | COMPONENT -
vespa PNP vs TUNING, quattrini M1X vs polini 177 : 17s FASTER / 50-100kmh /FMPguides - Solid PASSion - YouTube
Modern Vespa : Quattrini M1XL, Nuff Said.
Freakmoped vespa tuning tips - which and how many VESPA 125cc tuning kits ( 177/186/195/200cc) are available? in total at least: 43 possibilties (NO joke!) due to a lot of pretty similiar parmakit