This Hi-Speed variator from Polini boosts your 4T scooter and is especially an excellent addition to a tuning cylinder.
Several areas of this variator are optimized compared to a standard variator:
A variator like this can help the acceleration and cause your scooter to reach its top speed, faster.
Note: Polini recommends using this variator with their lambda emulator . 4.5 gr rollers, slide tubes, compression springs and trim springs are included.