Boost your scooter's acceleration and cooling efficiency with the Polini Air Speed 12.5 Pulley (Part No. 244.0128), designed specifically for Yamaha and Minarelli engines. This high-performance pulley system features advanced airflow design to enhance belt cooling and improve transmission response under demanding conditions.
Matching the Polini Hi-Speed Evolution 2 variator with 12.5° pitch angle (241.748), there is now the Ceramic Air Speed Evolution 12.5° V-belt pulley.
The pulley is manufactured from a single block of material, light alloy coated and treated with ceramic. The large fan wheel lowers the temperature and reduces wear.
100% Made in Italy! Only suitable for 16mm crankshaft shaft. 244.0128 241.748 8054705113628
