POLINI Vespa Racing 60mm Stroke Crankshaft PX125, PX150, Cosa 125 Engine_Gearbox while the PX 200 version

while the PX 200 version has a 64/65 primary drive

Main air correction jet: 160

1984884 (PIAGGIO)

Due to different Fuelling the pump will not fit earlier models

POLINI Vespa Racing 60mm Stroke Crankshaft PX125, PX150, Cosa 125 Engine_Gearbox while the PX 200 versionPOLINI Vespa Racing 60mm Stroke Crankshaft PX125, PX150, Cosa 125 The width of the sealing surface on the rotary vane cheek is 15. 8mm wide as on the original PX125 150 shaft. The PX200 version has here 16,8mm The extended inlet control angle results in a larger time cross section and allows a significant increase in power over the whole speed band. Very nice stable shaft which provides more bandwidth in every engine. flow optimized control cheek well