Specification: Item Type: Rear Wheel Electric Bicycle Conversion Kit Material: Nylon Tire + Alloy Rim + Stainless Steel Spoke Voltage: 48V Installation Location: Rear Wheel How to Use: 1. 1:1 Pedal Assistance system Removing the the pedal crank arm and gasket(right or left). Place the receiver ring into the axle and secure it in position using gasket (your bike own) or superglue (not included). Pay attention to the direction of arrow. 2. The brake lever is only intended for cutting off motor power supply. You need to connect your brake lines to the brake lever to get a better braking effect. Ensure the iron buckle is closed. 3. Wheel Installation Installation of the tube motor is the same as that of the hub motor. Please remove the front wheel or rear wheel on your bicycle with a wrench (not included) in advance. 1) Confirm the spinning direction of the wheel and install the wheel into your bike frame. Push down the wheel to make sure that the wheel axle is locked tightly into the frame, 2) Tighten the bolts and make sure it is very tight. This is for safety reasons and this is a very crucial step to build a good Electric Bike. The torque of the motor is very powerful, which is why you must make sure the bolts are tight enough to handle it. 3) Install the plastic back to the wheel axle. 4. Twist Throttle and Brake Remove the original handlebar grips and brake lever on your bicycle before you carry out the installation for the throttle. 1) Side the brake lever to the handle of your bicycle. 2) Secure the brake lever with a hex key (not included). 3) Slide the throttle to the handle of your bicycle and the secure it with a hex key (not included). 4) Connect the bike brake line to the new brake lever s iron buckle. After that, make sure the iron buckle is closed.