Naraku QMB139 Adjustable Drive Sheave (137-30)

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.

Please Note: CSC Go scooters will require 3x clutch pins 151-148 to install this drive sheave. (Please see related items.)

Please see our Warranty & Returns Policy.

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