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Optimized variator travel for better takeoff and increased top speed
Genuine CU 500 and CS 500
extending the life of the tire during neighborhood or pit use
Hardware: Includes M8 Allen Bolts and 10mm Caps
Genuine OEM Fit: This is an original equipment part
SSP-G QMB139 Adjustable Drive Sheave vbb2 Optimized variator travel for betterSSP G Adjustable Drive Sheave for 50cc, 4 stroke QMB139 engines. Please Note: CSC Go scooters will require 3x clutch pins 151 148 to install this drive sheave. (Please see related items.) Overall Outer Diameter: 118mm Inner Diameter: 34mm QMB139 50cc 49cc
