variator kit Polini Hi-Speed for Minarelli long version

Latest variator technology from Polini for untuned 50cc engines for improved acceleration and higher top speed. Polini evo sliders make for better power transfer and shifting.No additional tuning required, so a great option for untuned scooters. Delivery contains: Hi-Speed variator with sleeve, 1x set of reinforced clutch springs, 2x counter pressure springs (22kg and 28kg) with Evo-sliders, 2x sets of variator weights (16x13) at 6.9g and 5.6g, and a drive belt.