Polini Set of xmm gr - pieces Drive rollersRef : POL00018A / 1011825

The three weights, in steel and aluminium alloy, weigh 15, 6,5 less than the original weights.They are interchangeable and can have 2 functions:1. The 3 weights coupled with Polini clutch thrust springs, in addition to the original 12, ensure shorter clutch slipping times and, at the same time, increase clutch speed from 5000 to 6000, depending on the hardness of the springs s2. The 3 weights replaced with the original ones increase the slipping time of the original clutch