Back by popular demand, the HI SPEED EVOLUTION R9 has been re-worked and Polini now bring you the HI SPEED EVOLUTION RO2 variator. Suitable for Minarelli cranks with 13mm vario adapter. The variator now works with 6 variator rollers, each 19x15.5mm. Contains 2 sets of variator rollers allowing you to choose between the 3.2g or 3.8g variations. High End Racing variator - 100% Made in Italy. Delivery as pictured.