Vespa Bravo Polini 43mm "65cc" Racing Cylinder - 12 Pin star Tecnigas used Top Racing parts

Tecnigas used Top Racing parts for the scooter style transmission and Airsal reeds that are the same pattern as Tomos A35 with a pretty generous intake

Replacement rings are here

21mm intake for the Puch Athena AJH

One broken fin

Most of your V1 engines have a 38

Vespa Bravo Polini 43mm "65cc" Racing Cylinder - 12 Pin star Tecnigas used Top Racing parts43mm "65cc" cylinder kit for Vespa Bravo, Grande, and Si mopeds. This has the larger head so it will not fit in a Ciao frame. The racing version includes auxiliary exhaust ports and increase port timing. This takes the standard 65cc Polini and turns it up a notch. Cast iron cylinder. 2 ring piston. Head features a centered spark plug. Includes cylinder, piston, rings, pin clips, gaskets, and head. Does NOT include a new compression valve. This is the