Feature:1. Included Accessories: 20 inch bicycle lithium refit rear drive kit contains 48V 1500W rear drive flywheel motor wheel, 35A controller, LCDS866 meter, 130X shifter, D12 assist sensor, a pair of power off brake handle, controller bag and manual.2. Aluminum Alloy Wheel Ring: Brushless wheel hub DC motor adopts aluminum alloy wheel ring and is processed by fine technology, which effectively enhances the edge of the wheel ring. It is light, high end and generous, has strong bearing capacity, and is far more comfortable than other types of motor, so as to realize noiseless operation and let you fully enjoy the fun of riding.3. Manufacturing Material: The controller housing is made of high quality metal with grooves designed to protect the internal circuitry from thermal overload due to good heat dissipation. LCD meter adopts high quality ABS material, light, rain proof, sturdy and durable.4. Multifunction LCDS866 Meter: LCDS866 display meter has a variety of functions, LCD backlight display, can clearly display the status and data. When riding a bike, the product will display many useful data on your bike, such as power display, speed display, power indicator, fault indication, total mileage, single mileage, current speed, average speed, maximum speed, gear display, etc.5. Wide Applicability: 48V 1500W rear drive motor wheel kit is suitable for bicycle mountain bike lithium modified rear drive flywheel electric bikes, DIY electric bike, electric bikes, electric scooter, folding bikes, etc. Easy to maintain, electric bikes, mountain bikes conversion motor, high efficiency, greatly improve the fun of riding, suitable for cyclists like challenges.Specification:Item Type: Rear Drive Motor Wheel KitWeight: Approx.10150g / 358.0ozMaterial: Stainless Steel + Aluminum Alloy + ABS PlasticProduct Size: Controller Box Size: Approx.185 x 84 x 43mm / 7.3 x 3.3 x 1.7inMeter: Approx.80 x 48mm / 3.1 x 1.9inMotor Wheel Type: Rear Drive Motor WheelMotor Rated Voltage: 48VMotor Rated Power: 1500WMotor Speed: About 45-55km/hMotor Speed: 414-487 RPMMotor Torsion (N.M): 71-74.6 N.MMotor Opening Size (mm): Approx.142mm / 5.6inMotor Matching Controller Current: 35AMotor Ring: P25DMotor Torsion Arm: M 14Applicable Motor Brake Disc: Approx.160mm / 6.3inMotor Brake Type: Universal V Brake, Disc Brake Motor Wheel Position: Rear WheelMotor Structure: DC MotorMotor Magnet Height: 35HNumber Of Magnetic Steel Poles Of Motor: 46Motor Operating Temperature: -20-45Controller Rated Voltage: 36V DC 48V DCMaximum Controller Current: 35AController Speed Setting: 1-4.2VController Brake Input: Low LevelBOOSTER: 1:5Connector Types: Ordinary SM ConnectorController Line Color Definition:1. Yellow, Green And Blue Single Big Head Wire: Motor Phase Line2. Red, White, Black, Blue, Green And Yellow Double Row Six Wire Port: Motor Hall Line3. Red And Black Single Big Head: Power Cord4. Red, Blue, Black, Green And Yellow Single Row Five Wire Port: Meter Wire (5PIN)5. Black And Yellow Line (2pcs) : Power Off Brake Handle Line6. Red, Black And White Line: Throttle Shifter Line (3PIN)7. Brown, Black And Yellow Line: PAS Assist Sensor Line (3PIN)8. Black And Red Wire (2pcs): Headlight WireLCD-S866 Meter Working Voltage: DC 24V, 36V, 48V, 60V Compatible (Meter Selection Settings)LCD S866 Meter Function Description:1. Display Function: Speed Display, Power Indicator, Fault Indicator, Total Mileage, Single Mileage2. Control Setting Functions: Power Switch Control, Wheel Diameter Setting, Idle Auto Sleep Time Setting, Backlight Brightness Setting, Start Mode Setting, Drive Mode Setting, Voltage Level Setting, Controller Limit Value Setting3. Communication Protocol: UARTDisplay All Contents Of The Screen (Display All Contents For 1s After Startup)3.1 Display Of Battery Quantity And BMS Remaining Quantity3.2 Multi Function Display Area: Total Mileage ODO, Single Mileage TRIP (Unit: Mile, Km), Single Startup Time, Battery Voltage VOL, DST Battery Life3.3 Speed Display AreaAVG: Average Speed, MAX: Maximum Speed, SPEED: Current Speed, Unit: Mp/H Km/HThe Speed Signal Is Taken From The Hall Signal In The Motor And Sent To The Instrument By The Controller. (Time Of A Single Hall Cycle, Unit: 1MS) The Instrument Will Calculate The True Speed Based On The Wheel Diameter And Signal Data (The Amount Of Magnetic Steel Required By The Motor Hall)3.4 Vehicle Power Gear Adjustment, 0-9 Digital Display And Bar Display..Package List:1 x Motor Wheel 1 x Controller 1 x Meter1 x Meter Manual2 x Power Off Brake Handle 1 x Throttle Shifter1 x D12 Assist Sensor Wiring 1 x D12 Assist Sensor Power Chip 1 x D12 Assist Sensor Ring 2 x Tie 1 x Controller Bag 1 x Manual