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  1. T

    Want to build a low drag commuter

    i did try 25t but the motor was to Overgaard and just made the bike worse in every way. techzpod mobdro download
  2. T

    Want to build a low drag commuter

    i have a 21t on the front of my bike but as it uses the bosch small chain ring it is reduced buy 2.5 so if i had a normal size chain ring it would be 53t.