... brake can install on the front motor 2. very light weight: 3kg 3. beautiful, easy installtion New, fashional, ... kits 100% disk brake compatible.Thread on type does NOT work so we recast the covers with a ... suitable SLA battery, lithium battery in your country! How long does it take to change the battery?Depending upon ... geared motor, it is so light that the weight is only no more than 3kg. Can I ...