Cheap And Discounts Bafang FM G311.250.D Nylon Gear Set Spare Part for Replacement 18-33 Teeth Helical Suitable For FM G320.250.V too Wholesale. Buy Directly From Merchant 46 Ebike Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.