Siaecosys technical team tested the QS-138-4KW mid drive motor with Votol new EM260SP controller.
It's more powerful than QS-138-4KW with EM200SP kits.
Attached performamce curve for QS-138-4KW+EM260SP Controller.
If you have interested in this product, you can contact with our sales directly.
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Skype: Damon Wong(QSMOTOR)
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