Upgrade your scooter's CVT transmission with the Polini Hi-Speed and feel livelier pull-aways, better "drive" and smoother performance across the whole rev range straight away. The Polini variator uses optimised pulley geometry and low-friction guides for steady, progressive acceleration in everyday riding. The kit comes with two sets of rollers: 19x17 10 g. 19x17 12.3 g.