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RE: Grunner Bikes - With advanced technology to save energy & to rise adrenaline
Wow I have to say that 350km on a single charge is really good I also like the fact you can race your friends from anywhere in the world if your into bikes this can really get you in the mood for some exercise @mustavi
Believe me I found this product really interesting as it has some features you can't avoid!!! Thanks @simonjay