48V 2000W 26″ 27.5″ Rear Type Hub motor kit. Rated Voltage (DCV) & Rated Power (W) : 48V 2000W. Wheel Diameter (Inch) : 26″ 27.5″. Brushless Motor : Gear Drive. Operating Temperature : -20 – 45? Rear Dropout : 135-142mm / OLD. Thread-on Freewheel Diameter : M14. Support Brake : V/Disk Brake. Step 1 : Mount the motor. (1) Remove your bicycle front wheel. (2) Mount your disc brake on the motor. (should be on the left side of the bike), if y. Our bicycle is V brake, please ignore it. (3) Mount the front wheel on the bike. Step 2 : Mount torque arms. Step 3 : Mount LCD Display. Step 4 : Mount Brake Levers. Step 5 : Mount the Pedal Assist Syestem (PAS). Step 6 : Connect cables with all parts. Step 7 : Mount the battery on bike, and connect battery with controller, all things done. (Battery not included in the package).