Variator control shim kit Minarelli Yamaha Aerox, Jog, Zuma, Prebug

These tiny washers can have a dramatic effect on how your scooter performs.

In general, lengthening of the boss will give you better acceleration because the belt will sit lower in the front pulley.

A shorter boss will allow your variator to close more for more top end speed.

Contains 10 shims of each size .1mm, .2mm, and .5mm.

Compatible with any scooter that has a variator boss with a ID of 13mm and a OD of 18mm.