Naraku compatible with Ruckus Racing Variator Kit

Naraku Racing Variator Kit for higher top speed! fits Ruckus 50 and fits Metropolitan 50. The original sleeve/boss can be used.Please see our Warranty & Returns Policy. NK901.21Roller Weight Size: 16x13mm (5.5g) Variator Outer Diameter: 95mmVariator Inner Diameter: 20mmCompatible with Stock Boss/Sleeve