This 20 inch bike kit combines the full E-bike technology: direct drive Brushless Gearless high torque hub Motor to change almost every bicycle into a personal electric bike. Save energy, protect environment and save money with a lot of fun. Save energy, protect environment and save money with a lot of fun.
This 20 inch bike conversion kit works with 48V or 52V battery.
 
Main Features:
>. Rim A: 20 inch double wall Alloy (Rim Fit For: 20 × 1.5" / 1.75" tire)
>. Spoke: Silver 12 gauge / 68mm Length × 36 pcs

>. Rim B: 20 inch double wall Alloy (Rim Fit For: 20 × 1.95" / 2.0" ~ 2.5" tire)
>. Spoke: Black 12 gauge / 72mm Length × 36 pcs
 
>. Engine: Hub motor
>>. Voltage: 48V / 52V
>>. Power: 1500W
>>. Efficiency: 90.5%
>>. Max speed: 53.1 kmh -- 32.9 mph
>>. Mechanical brake: V 
>>. Cable location: shaft end, LEFT
>>. Cable length:150cm / 60"
>>. Install: spacing of 100mm fork
>>. Noise: < 60 db
>>. Surface: Black painted

>. Driver: sine wave brushless controller
>>. MOSFET: 18 PCS
>>. With LCD: YES
>>. Rated Voltage: DC 48 / 52 Volts
>>. Min. Voltage: DC 40 ± 0.5 V
>>. Rated power: 1500 Watts
>>. Casing material: aluminium
>>. Maximum Current: 40 A ± 1 Amps
>>. Thermal: aluminum shell and the substrate
>>. 3 phase 120° brushless motor
>>. Operating Conditions: -20~45 °C
>>. Waterproof design
>>. Size: 155 mm L × 72 mm W × 38 mm H

With LCD, More Function:
* Cruise -- Green button Control (While motor is working,press green button one time,it will be "CRUISE" - running as the same speed)
* Reverse -- Yellow button Control ("Left side & mid / forward -- "Right side / backward")
* Kmh / mph
* Speeds ( 0 - 5 ) -- "0" is off throttle. "1" is the slowest ~ "5" is the fastest.
* ...

Package Content:
1 x 20 inch 48V / 52V 1500W front hub motor wheel
1 x 48V / 52V 1500W 18-MOSFET sine wave controller
1 x LCD
1 x Twist throttle -- Cable length: 1500mm
1 x Brake levers -- Cable length: 1500mm
1 x Three button switches ( control cruise... ) -- Cable length: 1500mm
1 x Pedal assist -- Cable length: 900mm

Net Weight: 11.0 kg
Package Size: 50cm L x 50cm W x 23cm H
Package Type: Cardboard Box 

Diagram:	Motor Drw.	Performance: