Polini Hi-Speed Evolution variator kit for scooters using a Minarelli vertical & horizontal 50cc 2-stroke engine.

This is Polini's high end variator kit for the Minarelli engines. The kit is supplied with a torque spring, Evo slider, 2x sets of rollers (3.2g & 3.8g) and a selection of adjustment shims 

Choose between Standard crank (13mm), Evolution crank (16mm) or Electric (13mm but can still use electric start)

*Please note Standard and Evolution are meant to be used without the electric start.

Polini 241.727, 241.728, 241.731