How to install SpeedFun Ribelle tuning speed release kit for Yamaha PW 

Find out how to install the SpeedFun Ribelle speed release kit on ebikes with Yamaha PW engine. The SpeedFun Ribelle tuning kit increases assistance up to over 60 Km / h and shows the real data on the display.
Click here to buy the SpeedFun Rebel kit for Yamaha PW engines:
www.speedfun.bike/en/prodotto...
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