Aluminum CVT pulley with integrated fan wheel and star washer, engineered for Minarelli-based engines including Yamaha Aeox, Yamaha Jog, Aprilia SR50, and Malaguti F12/F15 models.

Compatible with 2-stroke Chinese scooters from CPI, Keeway, and similar manufacturers. This pulley regulates V-belt tension within the CVT system — pushing the belt outward during acceleration and retracting it during deceleration for smooth power delivery. 

Designed for 13mm crankshaft applications as a direct OEM replacement.

We suggest to use original star washer