Polini Hi-Speed Control Variator Kit for 50cc 4-Stroke Yamaha ScootersCOMPATIBILITY: MBK – Booster 50 4T, Nitro 50 4T, Ovetto 50 4TYamaha – Aerox 50 4T, C3 Giggle 50 4T, Neos 50 4T, Vino 50 4T, Zuma 50F 4TWidely accepted as the best variator on the market, the Polini version adds performance across the entire power band from take off to top speed. Item P.19359, 4250362483850, Polini item 241.658Fits the following models: Yamaha C3 Yamaha Zuma 50 4-StrokeThe roller surfaces make for improve transfer of power meaning increased acceleration, with less focus on the top end speed. Power you can feel, but not quite as strong as the option from Malossi and co. Makes a great everyday vario. Delivery includes: 1x set vario-rollers 16×13 at 6.9g.**