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QS 273 4000W V2 Electric Spoke Hub Motor Kits for Electric Scooter

$448.00 / Set | 1 Set (Min. Order)
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Lead Time:
15 day(s) after payment received
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Quick Details
> 400w
Product Name:
QS 273 4000W V2 Electric Spoke Hub Motor Kits for Electric Scooter
Output Power(W):
Brushless dc motor
Waterproof Grade:
Motor design:
Double Shaft

Packaging & Delivery

Selling Units:
Single item
Single package size: 
43X43X34 cm
Single gross weight:
20.000 kg
Package Type:
Carton Box
Picture Example:
Lead Time :
Quantity(Sets) 1 - 10 >10
Est. Time(days) 15 To be negotiated

QS 273 4000W V2 Electric Spoke Hub Motor Kits for Electric Scooterub Motor For E-Bicycle

Product Description

For this 273 spoke hub motor, the dropout is 152mm, it could be used for electric bike, high power electric bicycle.

273 motor means the diameter of iron ring of rotor is 273mm


For 152mm dropout 273 spoke hub motor, we can provide from 3000w-4000w, you can refer below link for the detailed information.



1). Simplify to make a electric-scooter. Gearbox, transmission shaft, clutch are no need. Which save space.

2). It could be installed in the rear to save more space for battery.

3). Support regenerative braking

4). High efficiency: 85~92% 


QS Motor Specification (e.g. 4000W 273 40H V2)

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

· Brand: QS Motor,QSMOTOR

· Motor Design: Double axle without rim (not integrated), 36 spoke holes, OD 4.2mm 

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

· Magnet Height: 40mm, 23 pole pairs

· Stator: Aluminmum Core

· Rated Power: 4000W 

· Rated Voltage: 72V as default (48V-96V, optional)

· Speed: 80KPH as default (24-100KPH, optional) 

· Max Torque: approx 228N.m

· Max Efficiency: 86-91%


· Thermic Probe: KTY83/122 (as default, optional)

· Working Temperature: 70-120℃ , peak 150 ℃ 

· Brake type: Bike Disc brake, PCD6*44mm(as default)

· Drop-outs/Rear Fork Width for installation: 152mm

· 14mm english thread length for single/3 speed freewheel

· 10mm axle flats

· Dual Hall Set with waterproof connectors

· 16mm⊃2; Cross Section of Phase Wire (not include insulation layer)

· Hall Sensor Phasing angle: 120 degree

· Waterproof Grade: IP54

· Color: Black (as default), White/Luminous (extra $5.0)

· N.W./G.W.: 18.2kg/20.0kg  

· Package Dimension: 43cm*43cm*41cm/piece


Pictures Show






QS Motor 273 4000W E-Bike Spoke Hub Motor List  


How to recommend you suitable motors? 

Firstly, To customize a suitable electric hub motor for your vehicle, could you please inform the points in below?

1. E-bike, E-scooter, E-tricycle or E-car? 

2. Weight of vehicle with battery, loading weight (weight with load only)? 

3. Tire model/diameter? 

4. Rated voltage and wattage of motor, nominal speed/top speed, and climb angle or torque @ what speed? 

5. Battery nominal voltage, peak voltage, capacity and vehicle range? 

6. What's the drop-outs/rear fork width of your frame?

Within your details information, we could make assessment and calculation accordingly for your project




Company Information

 About US

SIAECOSYS is an union of manufactories in electric driving industry, and belongs to Taizhou SIA Trading Co., Ltd that set from QS Factory in 2013 year.

Currently, more than 80 top factories join SIAECOSYS, and they are willing to provide customized products and service for international customers who has passion in e-scooter/tricycle/car industry.

SIAECOSYS focus on organizing member factories together to customize specific e-driving system solution and products for different requirements from customers in the world.

Nowadays, SIAECOSYS has more than 5000 customers from the world and more than 40 customers send inquiry every day.

SIAECOSYS has sale department, Technology department, Quality inspection department, general accounting department, purchase department and after-sale service department.






Q1. Are you trader or manufacture?

A: We're manufacture.


Q2. How long is your production time?
A: Generally, the production period is 12-14 working days(6 working days per week).

The specific delivery time depends on the items and the quantity of your order.

Q3. How long is your warranty time?

A: For motor, the warranty time is one year and three months. For other parts, the warranty time is one year.


Q4. About Customs Clearance

For some special countries with strict customs for import, so pls. confirm it firstly to us that you have ability to do customs clearance, otherwise we will not take on heavy responsibilities for this issue, return money and goods are not support.

Special countries list:

Argentina, Brazil, Egypt, Turkey, Iran,Portugal,Romania, Kazakhstan, Ukraine, Yeman etc.

Some countries name not listed, the salesman will inform you in time if you placed the order online directly. Thank you for your understanding.


05. Does your products with CE certification?

Yes, our motor with Certification (CE, CCC), and our factory with certification of ISO9001, TS86949