This electric bike conversion kit include every parts you need to convert your bike into an electric bike. This is packing list1* Motor Wheel 48v500w Front motor or Rear motor Wheel size: 20",24",26"700C2* Rear Rack Battery 48V16AH/Samsung48V21.5AH3* Lithium Battery Charge ( Europe Standerd ) Notice: If you are not European, we will add conversion plug4* Speed Sensor & Sensor disc plate ( PAS )5* Display (S900LCD display or S6LCD display)6* Waterproof Main Cable7* Power Cut-off Brake Lever/ Brake sensor8* Throttle ( Thumb Throttle or Half Twist or Twist Throttle )9* Controller10* Head Light11* Rear rack ( black )12* Other AccessoriesKindly leave us order message in this format after you place an order:1. Front motor/Rear motor2.Rim size: 20",24",26",700C(28"),29"3.Throttle: thumb/half throttle/twistIf you do not leave the message to us, we will choose thumb throttle and brake lever for you. Thanks! 1) It is powerful 48v500w Brushless Front or Rear Wheel Motor, And it is suitable to the V brake and Disc brake.2)The max speed of the motor will be 40-45km/h.3)The size of the rim is 26" 700C(28"). Please confirm the size of your wheel in advance.If you need other size,please contact us.4)The standard installation width/open size of the front motor is 100mm-105mm .Please confirm the length of your front fork.6)If customer prefer rear motor for this kit, please confirm your bike rear fork(axle) length whether it is 135mm 
