Top Performances Variator Spacer Set MBK / Yamaha (d=13mm)
These washers sit between variator sleeve and pulley, increasing the length of the sleeve - and the performance of your engine. A thicker washer will improve acceleration, but bring top speed down a little. A thinner washer will have the opposite effect - top speed is increased (up to 10km/h more!), but acceleration will suffer a bit.
Diameter = 13mm
0.4 / 0.6 / 0.8mm