Hi-Speed variator from Polini. The modified roller surfaces of this tuning variator ensure perfect transfer of power and improved engine performance. With the Hi-Speed, Polini offer one of the most drivable variators on the market, ensuring that the full engine performance can be put to the ground. This means a drastic improvement in acceleration. Variator weights: 16x13 (4.9g and 5.6g). Delivery as pictured.