![[Select] Range Extender Kit for Duo Series - OEM/Sinowatt / 52V 21Ah / Type 1](https://ridenationebikes.com/wp-content/uploads/2025/05/5221RangeExtenderT1_5de90735-b6db-427a-9572-189211936663-5.png "[Select] Range Extender Kit for Duo Series - OEM/Sinowatt / 52V 21Ah / Type 1 1"){kind=small}
![[Select] Range Extender Kit for Duo Series - OEM/Sinowatt / 52V 21Ah / Type 2](https://ridenationebikes.com/wp-content/uploads/2025/05/5221RangeExtenderT2_7673536c-40da-4b1e-b154-7e17e1961fc1-5.png){kind=small}
![[Select] Range Extender Kit for Duo Series - OEM/Sinowatt / 52V 19Ah / Type 3](https://ridenationebikes.com/wp-content/uploads/2025/05/5221RangeExtenderT3_6810d658-0abb-4d0d-a4a9-e474141afbdc-4.png){kind=small}
| Weight | 3500 lbs |
|---|---|
| Attribute 3 value(s) | Type 1 |
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