Naraku QMB139 Adjustable Drive Sheave


img-qind.JPG Naraku Adjustable Drive Sheave for 50cc QMB139 engines.

The more linear slots on this drive sheave allow for better acceleration. This part can also be called a torque driver or secondary slider.

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Out of stock

SKU: 137-30 Category:


  • Overall Outer Diameter: 118mm
  • Inner Diameter: 33.5mm

Weight:  0.9  lb