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.