Polini 241.626 - P241626 - High Speed Variator for the Honda Ruckus or Metropolitan 50cc scooter The pulley is made of silicon-aluminum alloy and gives you improved acceleration, higher top speeds. Includes one set of 5.6 gram weights and one set of 6.8 gram weights 50cc 4-Stroke LC Last longer and almost always adds better top speed Manufactured in Italy