
100% made in Italy the new Polini Evolution 3 Speed drive for 50cc scooters equipped with Minarelli-Yamaha engines.
Made of light aluminum alloy, it is directly machined from the block and weighs only 500 gr. less than steel pulleys. This is an innovative and exclusive feature that provides great advantages: in addition to greater power transmission, working temperatures decrease and, consequently, the grip of the belt is better. The performance is really high and due to the stability of its effectiveness it helps to avoid any loss of power during the race. During racing tests, the increase in speed is immediately noticeable thanks to improved grip, with faster acceleration when exiting corners.
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