Polini Kit Speedcontrol variomatik is a complete variator kit with a V-belt, two compression springs and a variator. The included Speedcontrol variator is extremely powerful and ensures increased traction and top speed. This is done through improved runways and a generally better transfer of forces. The V-belt is made of Kevlar, which makes it very resistant to heat and ensures against the belt slipping. The kit comes with two sets of rollers (4.9 and 5.6gr.), So it is possible to set the scooter.