Find out how to install the SpeedFun Furious speed release kit on ebikes with Bafang M420 engine. The tuning kit SpeedFun Furious increases the assistance up to 50 Km / h and shows the data halved on the display.
Click here to buy the SpeedFun Furious kit for Bafang M420 engine:
www.speedfun.bike/en/prodotto...
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