Aluminum fan impeller from Casa Performance for all Lambretta Variotronic pole wheels.
Increases the airflow speed at 7500rpm from 84 to 108km/h!
Advantages:
25% more airflow with the same drag coefficient (=no loss of engine power).
Significantly cooler running cylinder, ideal for high continuous load (highway, racing)
Significantly more stable than the original plastic fan blade (no breaking at high engine power/speeds)