The NCY Adjustable Secondary Sliding Sheave Clutch Pulley Assembly gives your Yamaha Zuma 50 or Jog a quicker takeoff and a higher top speed. With two sets of ramp angles � one steeper, one more gradual � you can tune engagement to suit your riding style: steeper for more power off the line, gradual for more power at speed.
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Performance upgrades are considered racing parts and are not covered by warranty.
