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QS Motor 273 40H V3 Electric high power bicycle kit / E bike kit / spoke 4000W Powerful Hub Motor Kit

Price:US $989.74/piece
Production Period:15-20 business days

QS Motor 273 40H V3 Electric high power bicycle kit / E bike kit / spoke 4000W Powerful Hub Motor Kit 



For 273 4000W V3 electric spoke hub Motor kit assembly, it could be used for high power electric bike, which could

be 72V 100KPH.


e.g. Electric high power bike

E-bike weight, approx 47kg+80kg

Tire diameter: 2.50-19

Top speed: 72V 100km/h

Climbing slope: 25°@127kg

Battery: 72V40h lithium battery



One set including below kits


Combo 1


1. 1pc X QSMOTOR 4000W 273 40H V3 Electric Bike Spoke hub Motor

2. 1pc X Single speed freewheel

3. 1pc X Sabvoton 72200 controller (customized for TFT H6 speedometer) with bluetooth adapter

4. 1pc X H6 Speedometer

5. 1pc X Half Twist Throttle

6. 1pc X Thumb Throttle (for 0-5V regen braking function)

7. 1pc X Bicycle disc brake assembly with brake disc

8. 1pc X DC-DC converter 72v to 12V 10A

9. 1pc X PAS sensor

273 4kW+SVMC H6

Combo 2


1. 1pc X QSMOTOR 4000W 273 40H V3 Electric Bike Spoke hub Motor

2. 1pc X Sabvoton 72200 controller (customized for TFT H6 speedometer) with bluetooth adapter

3. 1pc X H6 Speedometer

4. 1pc X PAS sensor

4kW E-Bike+H6 display+SVMC72200


Combo 3


1. 1pc X QSMOTOR 4000W 273 40H V3 Electric Bike Spoke hub Motor

2. 1pc X Sabvoton 72200 controller (regular version) with bluetooth adapter

4kW E-Bike+SVMC72200



Key features


1. QS Motor with high quality and service.

2. Sine Wave controller, Bluetooth wireless connection are optional, Highest Reliability!

3. Parameter Programmable

4. Higher Torque & Higher Efficiency

5. No noisy

6. Temperature sensor inside and Lower overheating

7. Regenerative braking



Product description


Item: QSMOTOR 4000W 273 40H V3 electric spoke hub Motor


Genearl Specification


Motor Type: BLDC Outer Rotor In-Wheel Hub Motor With Hall Sensor

Brand: QS Motor, QSMOTOR

Motor Design: Double axle without moped rim (integrated), 36 spoke holes, OD 4.2mm

Matching Rim Size: 24inch, 26inch E-Bike Wheel, 17inch, 18inch, 19inch moped wheel

Magnet Height: 40mm, 16 pole pairs

Stator: Aluminum Core

Rated Power: 4000W

Speed: 72V100KPH.

Work Voltage range: 48V-96V, it will be 72V as default.

Max Torque approx 266.0N.m

KV: 72v1090rpm

Thermic Probe: KTY83-122 (as default, optional)

Max Efficiency approx 84%

Working Temperature: 70-120℃ , peak 150 ℃

Brake type: Disc brake (as default), PCD6*44mm for bicycle

Drop-outs/Rear fork Width for installation: 152mm

Dual Halls with waterproof connectors(One for using, one for spare)

14mm english thread length for single/3 speed freewheel

10mm axle flats

16mm² Cross Section of Phase Wire(not including insulation layer)

Waterproof Grade: IP54

Color: Black (As default)

N.W/ G.W: 17.5kg/18.5kg

4kW spoke sia


Dimension Drawing:


  • QS 273 152mm drop-outs e-bike spoke hub motor

273 152mm e-bike



Please noted:


Optional appearance, drawing, performance curve/test report are available. 

If you need more technical information, please feel free to contact us.

We will give you reply in 12hours.



2. Single speed freewheel


1. Single speed 1/2*3/32*16T, only 16T is available now

2. Black

3. English System Thread

4. Suit for QS Spoke Motor (English thread)

Freewheel sia


3. Sabvoton 72200 motor controller (customized for H6 speedometer) 


1). Sine wave controller, programmable, with regen function

2). DC Current Limit: 200A

3). Max. Phase Current: 450A

4). Protect Phase Current: 550A

5). Battery Voltage: 24V-72V rated, Max. 95V

6). Including one controller

7). Controller size: 283mm*147mm*62mm    

8). Net weight: 2.2kg

9). Default including bluetooth adapter.

10). Default function: Hall, Throttle, Electric brake, High Brake Level, speed switch




4. TFT H6 color speedometer display


· 3.2 inch color TFT screen

· 48V/60V/72V power supply

· Shutdown leakage current <1Ua

· Supply controller terminal operating current 100mA

· Normal operating temperature of the instrument -20~65°C




1. Battery display: 5 segments of power indication, the voltage value of each segment can be set according to customer requirements;

2. Speed mode: real-time speed RT SPEED, maximum speed MAX SPEED, average speed AVG SPEED;

3. Speed display: display range 00.0. ~ 99.9, unit Km / h km per hour, MPH miles per hour;

4. Assist gear position: 0~9 files, of which 0 gear is neutral and no boost, 1~9 corresponds to boost gear, and P is displayed in 6Km push mode;

5. Headlight display: displayed when the headlights are on;

6. motor temperature: monitor motor temperature in real time;

7. Mileage mode: cumulative mileage ODO, single mileage Trip

8. WH.KM: the controller power consumption ,wh/km 

9. Motor temperature.

10. Regen Ah:Cumulative Ah while controller in regen mode .

11. Clock: Built-in battery, user set up;

12. Clock: Built-in battery, user set the year, month, day, hour, minute and second.





5. Half Twist Throttle with 3 speed toggle switch 




7. Thumb Throttle for 0-5V variable regen brake

It could be mounted in left hand




8. Bicycle Disc brake assembly


Electric bicycle forged aluminum hydraulic disc brake system assembly

1. Model: 152PYD+BS152

2. Including 2pcs 203mm plate, PCD6*44mm, 2mm thickness

3. The length of oil of both front and rear can be customized according to your e-bike(900mm for front, 1600mm for rear as default)

4. Callipers: double-piston 2*21mm

5. Installing Distance of front tire: 74mm(as default) or 51mm

6. Installing distance of rear tire: 51mm

7. Wiring: two core wiring

8. Materials: Caliper/Lever Forged aluminum, Bracket: Cast aluminum

9. Current: 1A (max)



9. DC DC converter


72V to 12V, 10A



Application for QS electric spoke hub Motor


205 spoke motor 750×750

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