rear derailleurs manual

• yishunbike.com
  • E1075 (size 19) + bafang M500 + bafang BT F03 battery
  • E861 (size 18) + shimano E8000 + darfon battery E4C0C-001
• https://www.alibaba.com/product-detail/29er-Carbon-Suspension-E-bike-Electric_60851303278.html
  • shimano E8000 + shimano E8035
• https://www.edge-design.com.tw/Spec-E%20PYRENEES%20PLUS.html
  • SHIMANO e8000 + Darfon Battery E4C0C-001