POLINI Evolution High-Speed-Kit Variator Kit GTS250, GTS300, GTV300, GTS300 HPE, GTS310POLINI Evolution High Speed Kit Variator Kit GTS250, GTS300, GTV300, GTS300 HPE, GTS310 The POLINI Evolution High Speed Kit Variator Kit GTS250, GTS300, GTV300, GTS300 HPE is expertly designed for use in the 300cc Vespa GTS GTS Super GTV models. This ensures that the pulley weights, ramp angles, and other components are perfectly tailored to the weight and wheelbase of these specific models, rather than just the QUASAR motor, as is done by some other