26' Electric bicycle rear wheel conversion kit features 48V 1000W hub motor for efficient running Motor works under Hall effect and non-Hall effect for extending life for electric bicycle Pedal assist system (PAS) for sensing your pedal cadence and allowing you to ride electric bike comfortably Aluminum frame for durability and stability, can support a heavy weight up to 220 Lbs Brake levers for cutting off the power and braking when riding, can ensure riding safety