variator adjustment spacer set Polini Evolution 14.8x20mm for Piaggio 246.049

These Speed-up shims influence the length of the variator sleeve / bushing. Lengthening can improve acceleration and shortening can increase top end speed. Measure the length of the sleeve before installing the length of your choice. Kit contains 6 Control shims / spacers with 14.8mm inner diameter and 20.0mm outer diameter each. Suitable for Piaggio crankshafts.