An introduction to Bafang Mid-Drive Motor M620 (Bafang Ultra Motor) The Bafang M620, also known as G510 & Ultra, is a high-power, large-capacity mid-drive motor introduced by Bafang in 2018. Since then, it has undergone multiple updates and improvements to its controller and transmission system. Many manufacturers of electric bikes (including our Frey bike models) choose to use it as the Bafang eMTB drive system, not only because of its outstanding performance in mountain bike riding but also because Bafang offers customizable options to meet the demand of mountain bike riders for more power. As for the performance of the Bafang M620, you can refer to the review of EX by Michael ( it may be somewhat different from the current M620, after all, this review was published in 2020, and Bafang would improve their motor every year ): Powerful : 1000W nominal, 1500 peak, tunable pass 2000W. While torque remains constant at 160 Nm in stock form, the nylon gear was ...
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