An upgrade for the Swiss/German S class bike. http://www.stromerbike.com/en/int/e-bikes/stromer-st2
shemozzle999 Esteemed Pedelecer Sep 28, 2009 2,826 686 Mar 14, 2014 #1 An upgrade for the Swiss/German S class bike. http://www.stromerbike.com/en/int/e-bikes/stromer-st2