Polini Ceramic Air Speed Evolution 3 variator pulley for Aprilia, Gilera and Vespa 50cc scooters with Piaggio engines, great upgrade for the original due to design producing increase cooling. As well as this the pulley is one piece light allow and treated with ceramic for hardening.
Attention: Due to the lack of outer teeth the E-Start can not longer be used. The engine can only get started by kick-start.
