This is why Polini dedicates a concentrate of true sportiness to owners of 50cc scooters, both with Piaggio and Minarelli engines, starting with the name. We are talking about HI-SPEED, a kit complete with variator, rollers, contrast spring and EVO-SLIDER, capable of making the temperament of your standard scooter more aggressive and reactive, while maintaining safety and reliability at the same time. HI-SPEED has been designed with specific calibrations for the original scooter. The new half-pulley, in die-cast aluminum alloy with a high silicon content, was produced with new inclinations of the roller sliding tracks. An absolute novelty is the addition of the contrast spring with EVO-SLIDER. The Polini EVO-SLIDER, made of anti-wear and self-lubricating composite material, allows the cont.
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