13 Tooth 11mm Bore Sprocket for 1/2"x1/8" Bicycle Chain
Direct replacement for oem 9T (requires 2T longer chain)
+20mph@24V w/XYD-16 motor,
++20mph@24V w/M1018z motor
+++20mph@25.9V - Larger chainring or Epoch 11T rear cog recommended ... if you want to pedal assist ...
Now <$10 delivered!