Polini Scooter Clutch Spring

The contrast spring of the rear idler pulley is of considerable importance for adapting the variator to the power increase at the highest requirements.

Following the installation of conversions with high torque and power values, it can happen that the drive belt slips on the pulley or the rear idler pulley does not match the movement of the unit pulley mounted on the crankshaft. In these cases, it may be advantageous to provide the rear idler pulley with a higher spring pressure; the two springs manufactured have a higher spring pressure than the standard spring:

10% BLUE (Maxiscooter)