

Almost a year has passed since Polini presented the Polini Hi-Speed variator for the KYMCO AK550 and a new variator with an even more racing soul and full of new features is now available.
The new Hi-Speed Evolution variator is a true masterpiece of technology. The Hi-Speed Evolution kit includes the fixed half-pulley and a mobile “Air Speed” designed with different degrees of inclination to allow the belt a wider excursion.
The contrast spring has an improved load of 15%.
There are two series of even lighter rollers.
The patented lubrication system is capable of offering impressive performance and benefits, without giving up maximum reliability.
Nickel chrome steel bolt characterized by a very low coefficient of friction: it is distinguished by the extremely advanced carbon-based DLC treatment with innovative specific technology for Racing and aeronautical applications aimed at sliding and high-wear components.
The large bag The internal part of the bolt acts as a grease reservoir, inside which a special spring is placed that allows the constant distribution of grease on the bolt even in the most difficult conditions of use.
Thanks to all these features , driving your scooter will be a thrill plus acceleration and speed for everyone.
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