Naraku Variator Control Shims for Minarelli 2-Stroke Scooters with an 18mm Variator Boss.Variator control shims can be installed between the drive faces to lengthen the boss if your variator does not open fully to allow maximum belt travel.
For use with 18mm variator bosses only! Includes 10 shims of each size: .1mm, .2mm and .5mm. Fits stock variators on Yamaha Jog, Zuma and Vino, Aprilia SR50, Malaguti F12 and F15, Adly Silver Fox and Thunder Bike, and many more models that use a horizontal Minarelli engine.
Please see our Warranty & Returns Policy.