How to install SpeedFun Furious tuning ebike speed release kit for Giant Syncdrive Pro engine

Find out how to install the SpeedFun Furious speed release kit on ebikes with Giant Syncdrive Pro engine. The SpeedFun Furious tuning kit increases assistance up to 50 Km / h and shows the data halved on the display.
Click here to purchase the SpeedFun Furious kit for Giant Syncdrive Pro engine:
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