Polini Variator "Hi-Speed" Minarelli vertical

Tuning variator "Hi-Speed" by Polini.

It comes with 16x13mm / 6.9g roller weights (for use with original exhaust) and a reinforced torque spring. Basically the improved successor of Polini's famous "Speed Control".

As it was developed to be used with the original torque drive, it has a "small" outside diameter and has to be used with a standard (preferably reinforced) drive belt. The angles of mobile pulley and ramp plate were designed to improve acceleration.

Best used with a sports exhaust, 50cc sports to mid-race configuration.