Overseas After-sales Site:Poland maintenance point for EU countires. Feature: Stable Rear Drive System:This Bafang rear-drive motor, which is compatible with the disc brake, has a rated power of 500W, providing ideal power for vehicles. Two riding modes:Pure electric bikes & pedal bicycle, switch between pure electric mode and assist mode at will. Super Cost-Efficient:Speed up to 38-40 KMH, 470 RPM, efficiency = 80%. Compatible: It’s compatiable with mountain bike, road bike, racing bike ect bikes with 135-142mm rear drop out. 48V 500W Rear Hub Motor Specification: Model: BFSWX02 48V 500W Bafang Model: G020.500. DC/D Wheel Diameter (Inch): 20″/26″/27.5/700C—Optional Construction:Gear drive Rated Voltage (DCV): 48 Rated Power (W): 500 Max Torque: 45 N. M Efficiency (%)= 80 Color: Black Weight (kg): 3.3kg Suitable Rear Drop Out size : 135mm-142mm Noise Grade (dB). Controller Specification: Voltage: 48V Power: 500W Current: 18± 1A Size: 4.33″ 2.4″ 1.37. FAQ: Q:How do I know if this hub drive motor fits for my bike? A: The DC type rear hub motor fits for the bike withrear drop out size “135-142mm”, max 9 speeds cassette. Q:Can I install the motor as soon as I receive it? A:Before installing the motor, please follow the steps in the manual to connect the motor to see if the motor can work normally. Packaging List: 1 PC 48V 500W Motor with Rim and Spokes 1 PC 48V 500W Motor Controller 1 PC Controller Box (not battery) 1 PC Display(DPC18, KD986, 860C, P850C, 850C, SW102, 500C, C965, C961option) 1 PC 1T4 Cable 1 PC Motor Extension Cable 1 PC Thumb Throttle 2 PCS PAS Sensor 1 Pair Brake Levers. Gifts: 1 Front Light + 1 XT60 port connection cable.