Polini Evolutoin II Clutch Bell Drum Yamaha Zuma 50cc 107mm
Polini's new Zuma Clutch Bell now also features a shrunk-on finned ring the way it has already been employed for a while by Malossi. To further enhance the ventilation of the clutch, the sidewalls are equipped with bigger cut-outs. Polini Clutch Bell is recommend for highly tuned engines that are often accelerated and decelerated (in circuit racing or in scooters in stop-and-go traffic).
