PAS SENSOR: Speed sensor. Reduction Ratio: 1:21.9. 1 Display (Optional, if you choose no display, the parcel will not include). 1 Brake levers or Brake sensor. 1 Screw and Nut Accessories Set. 1 Bottom Bracket Remover. Max speed: 35 KM/H Max Torque: 100N. M Three Riding Modes: Throttle, pedal assist and pure pedal modes Quiet and powerful BAFANG mid-drive ebike kit that can convert most bikes to high power ebikes! POWERFUL MOTOR & CYCLING MODE: With the max torque 100 Nm, the 500W BAFANG electric bike conversion kit has excellent performance on climbing. Ride at the fastest speed with smallest effort, take it to exercise and have fun! There are 3 cycling modes for the mid-drive motor : Electric Bike (Thumb Throttle Mode), Pedal Assist, Normal Bike. Various modes satisfy your different needs, this eBike motor can make your cycling trip more exciting. WIDE COMPATIBILITY: BAFANG 500W mid drive kit is compatible with 68-73mm (length) and 34-36mm (internal diameter) JIS standard bottom bracket. You can install the mid mount motor on your mountain bike, road bike and commuter bike, not very recommended for bikes with carbon fiber frame or coaster brakes. Powerful 8fun motor makes your cylcing trip more exciting. Look forward to seeing your eBike conversion, enjoy the joy of riding right now. Please note that the motor kit does not include screws for 73mm bottom bracket. Simple and clear connection diagram. It allows you to understand more clearly how to connect each connection. Our kit comes with most the necessary accessories, including the bafang Mid-drive motor, brake lever or hydraulic brake sensor cables, thumb throttle, chainring wheel, crank, speed sensor, 1T4 wire, locknuts, wrench, and an ebike headlight (headlight is free). Before installing the motor, please follow the steps in the manual to connect the motor to see if the motor can work normally. Brake Type for you choose. Brake level or Brake sensor. There are various meters for you to choose from. DZ40 is the most favorable, EKD01 is the most popular, and there are also 500C/P860ML/SW2-M58… You can choose the meter you like to match.