Pulley -POLINI- Evolution Air Speed- Piaggio 50 ccm 2-stroke, Piaggio 50-100 ccm 4-stroke - 14°

The "Evolution Air Speed" pulley from Polini is designed for all scooters with Polini Evolution engine housings and for tuned Piaggio engines.

With a larger diameter of 115 mm and made of anodized aluminium alloy, it is characterized by the aerodynamic shape of the inverted cooling fins.

This design aims to increase the air flow in the transmission by 30%, especially at the highest engine speeds between 13,000 and 15,000 rpm. In addition, the power absorbed by the crankshaft is reduced by 5%. This solution ensures that engine performance is always maintained at the highest level while ensuring maximum efficiency.

Two versions with different inclinations of 12.5° and 14° are available.