Dr Pulley sliders weights are the perfect upgrade for an affordable mod that will add performance for bottom end torque and top end speed.
Slider weights by their very nature allow for driven plates in variator to close correctly for top end and allow bottom end torque to more responsive.
The slider weights find the correct much easier than round weights.
20X12 is the size of slider weights for the Yamaha Vino 125 with 11gram being suggested for upgrade.
Dr Pulley slider weights will slide on a flat spot so wear like on a round weights which will wear a flat spot and always hit high gear ratio after a time.