Feature: 1. Included Accessories: 20 inch bicycle lithium refit front drive kit contains 48V 1500W front drive motor wheel, 35A controller, LC‑S866 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 LCD‑S866 Meter: LCD‑S866 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 1000W front drive 20 inch motor wheel kit fits for bicycle mountain bike lithium refit front drive electric bike, DIY electric bike, electric bike, 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: 20 Inch Electric Bicycle Conversion Kit Weight: Approx.9450g / 333.3oz Material: Stainless Steel + Aluminum Alloy + ABS Plastic Product Size: Controller Box Size: Approx.185 x 84 x 43mm / 7.3 x 3.3 x 1.7in Meter: Approx.80 x 48mm / 3.1 x 1.9in Motor Wheel Type: Front Drive Motor Wheel Motor Rated Voltage: 48V Motor Rated Power: 1500W Motor Speed: About 45-55km/h Motor Speed: 414-487 RPM Motor Torsion (N.M): 71-74.6 N.M Motor Shift Size (mm): Approx.100mm / 3.9in Motor Matching Controller Current: 35A Motor Ring: P25D Motor Torsion Arm: M 14 Applicable Motor Brake Disc: Approx.160mm / 6.3in Motor Brake Type: Universal V Brake, Disc Brake Motor Wheel Position: Front Wheel Motor Structure: DC Motor Motor Magnet Height: 35H Number Of Magnetic Steel Poles Of Motor: 46 Motor Operating Temperature: -20℃ - 45℃ Controller Rated Voltage: 36V DC 48V DC Maximum Controller Current: 35A Controller Speed Setting: 1-4.2V Controller Brake Input: Low Level BOOSTER: 1:5 Connector Types: Ordinary SM Connector Controller Line Color Definition: 1. Yellow, Green And Blue Single Big Head Wire: Motor Phase Line 2. Red, White, Black, Blue, Green And Yellow Double Row Six Wire Port: Motor Hall Line 3. Red And Black Single Big Head: Power Cord 4. Red, Blue, Black, Green And Yellow Single Row Five Wire Port: Meter Wire (5PIN) 5. Black And Yellow Line (2pcs) : Power Off Brake Handle Line 6. Red, Black And White Line: Throttle Shifter Line (3PIN) 7. Brown, Black And Yellow Line: Assist Sensor Line (3PIN) 8. Black And Red Wire (2pcs): Headlight Wire LCD-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 Mileage 2. 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 Setting 3. Communication Protocol: UART Display All Contents Of The Screen (Display All Contents For 1s After Startup) 3.1 Display Of Battery Quantity And BMS Remaining Quantity 3.2 Multi Function Display Area: Total Mileage ODO, Single Mileage TRIP (Unit: Mile, Km), Single Startup Time, Battery Voltage VOL, DST Battery Life 3.3 Speed Display Area AVG: Average Speed, MAX: Maximum Speed, SPEED: Current Speed, Unit: Mp/H Km/H The 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 Power Sensor Ring 2 x Tie 1 x Controller Bag 1 x Manual Note: 1. Note that the communication protocol between the controller and the instrument is consistent.2. Please allow 0‑1 inch error due to manual measurement. Thanks for your understanding.