Custom Builds and Performance Parts
  • Polini 16/51 Gear Set for Yamaha Zuma 50 4-Stroke

    img-qind.JPG Polini 16/51 Primary Gear Set for Yamaha Zuma, Vino and C3 50cc 4-Stroke Scooters. Higher Gear Ratio for increased top speed and lower RPM while running at top speed. It is recommended this gear set be used after installing a big bore cylinder kit. A stock engine will not have enough power to make use of a taller gear set.