QS Motor 2000W 120 70H electric bike mid drive motor assembly kits

$568.00 / Piece | 1 Piece (Min. Order)
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Brushless, Brushless DC Motor
> 400w, 2000W

Packaging & Delivery

Selling Units:
Single item
Single volume: 
160050 cm 3
Single gross weight:
32.0 kg
Package Type:
QS Standard Export Packing 1. Polyfoam + Carton Box + Wooden support 2. Or according to customer's requirements
Lead Time :

QS Motor 2000W 120 70H electric bike mid drive motor assembly kits


For 120 2000W mid drive motor kit assembly, it could be used for electric scooter, electric motorcycle.

It could be 72V 70KPH, only avaiable for 12inch wheel kits (We might make bigger wheel & more powerful motor in near future.). 




QS Motor 2000W 120 70H Mid Drive Motor

Motor Type: BLDC Permanent Magnet Inner Rotor Motor With Hall Sensor

Brand: QS Motor,QSMOTOR

Motor Design: Single axle 

Matched Wheel: 12inch Wheel (as default)

Magnet Height: 70mm, 40pcs, 5 pole pairs

Diameter of stator: 120mm

Rated Power: 2000W (peak power, pending) 

Rated Voltage: 72V as default

Speed: 70KPH 

No-load rpm: 2900rpm without flux weakening, 4500RPM with flux weakening.

Max Torque: 187.9N.m (with Reduction ratio 1:4.7)

Reduction ratio: 1:4.7 (as default)

Max Efficiency: 89.2%

Continuous Battery Current: 35A (72V)

Peak Battery Current: 60A (72V)

Suggest Peak Phase Current: 250A

Thermic Probe: None (KTY83/122 is available for sample).

Working Temperature: pending

Single Hall Plate with waterproof connectors

8mm² Cross Section of Phase Wire (not include insulation layer)

Hall Sensor Phasing angle: 120 degree

Waterproof Grade: IP54

Color: Black 

N.W./G.W.: 7.8kg/9.1kg   Package Dimension: 34cmX34cmX33cm



APT AE72250, 250A peak phase current


The Kits include as below.

·1pc QS 2000W Mid Drive Motor with Left/Right fork 

·1pc APT AE72250, 72V 250A, SINUSOIDAL WAVE BLDC MOTOR CONTROLL (customized)

·1pc Rear synchronous belt wheel 

·2pcs Decoration cover

·1pc Rear axle with screws

·2pcs Adapter

·1pc Synchronous belt

·1pc 12inch Aluminmun wheel

·1pc fender

·1pc Belt shield 

·1pc Belt side shield 

For the pakage, we will pack in two carton with wooden support.

70cm*39cm*25cm, 20kg

51cm*48cm*37.5cm, 12kg

PS. Not Include Disc,Brake callipers & Tire (it will be apprx $88.0 more).


The total payment for a set of mid drive motor assembly is USD480.00/set + tire and disc brake cost USD88 = USD568. 








1. Motor (not sell separately)

2000W Rated Power, 72V 2900RPM


2. Controller









Test Report/Performance Curve

120 7#72V 968LD65A__1.jpg


Appication (e.g. E-Motorcycle M6)


Motor: 120 2000W Rated Power, 72V 2900RPM without flux weakening.

72V 4500RPM with flux weakening.

Ratio: 1:4.7

Wheel: 12inch

Speed: 70KPH

Battery: 72V 33Ah Lead-Acid Battery

Range: 30km@70KPH, 120km@30KPH

G.W. 135kg, not include controller & battery.


Combo A, not include battery & Charger, USD 1458.0

Combo B, not include controller, battery & Charger, USD 1398.0

Payment Term: Only accept 50% TT,Western Union, Money Gram in advance for deposit, balance should be paid before shipping. 

Delivery time: 23 -25 business days after receiving deposit (6 business days per week).

Not support on-line sale.

For details, refer to the hyperlink.



How to make the order

·Before-sale,  please advise which motor do you prefer, and advise above expected configuration of EV if possible.

After confirming motor, we could also advise suitable motor kits (e.g. controller).

It could be paid online, e.g. QS Motor Shop on alibaba, aliexpress;

We suggest to make the deal offline, we will make PI accordingly (latest price & accurate delivery cost).

·In-sale,  we will informe you once received the payment to start the order & ETD.

Before delivery, we will send some pictures for reference.

·After-sale,  Once got the tracking number, will informed you immediately.  

Manual and software will be sent accordingly, also we will email you after the package delivered.


Payment Term

Wire Transfer/TT, Money Gram,Western Union, Paypal 100% in advance(for sample) 
Generally, we perefer T/T, Money Gram,Western Union 100% in advance (for sample). 
Meanwhile, we could also accpet paypal. There will be extra cost for transaction fee: Total cost*4.4%+0.3

Withdraw fee: USD 35.0 (We could bear USD 35.0).
For Mass Production, we support 30% T/T in advance + 70% T/T the balance before shipment.

Produce Time

For normal motors, e.g. e-scooter motor, e-motorcycle, it takes 10-12 business days (6 business per week).
For customzide motor & single shaft motor, it takes 15-16 business days.
In busy season,  the order might be postponed. For mass production, the produce time will be increased accordingly.
PS. For the 3000W 205 50H V3 spoke hub motor, we made some 24*5T & 30*4T motor in store.

Standard export packing 1. polyfoam + carton box (for sample) 2. Or according to customer's requirements


Life Time of QS Motor & Warranty of Sample
The Life Time of motor depends on usage.
For general usage, it's about 3-5 years, and it could be 5-7 years if it work in good condition.
For testing and abusing usage, the lifetime will decrease accordingly.
E.g., For 3kW V2/V3 motor, the peak power could be 6kW (2 times of rated power).
Situation 1:
We suggest peak 70-80A battery current for general usage (72V). It's most stable configuration & longest life time.
Some EV enthusiast adjust it to be 150A, the output power is far more than 6kW peak. QS Motor could also work,

which might not as stable as former situation. For a long time in high current/power, the motor might over heat & even burnt.

We strongly suggest to install Thermic Probe (e.g. KTY 83/122), so that controller will protect motor due to the temp inside of motor.
Situation 2:
The peak speed of 1pc 3kW motor is 80KPH in 72V(for e-scooter).
Some EV enthusiast adjust it to be 96V, the max speed might be 100KPH, the continuous output power is far more than 3kW rated (maybe equal to 5-6kW).

QS Motor could also work, which might not as stable as it in 72V. 
We call it over voltage/abusing usage, the life time might be shorter, and V3 will work better than V2. 


Warranty period: one year and three months (sincethe date of manufacture) or after riding 15000KM.
For Sample, If it's destructive test/abusing usage due to test purpose, we could not do aftersale issue for free.

If there is some damage during your test, which we could repair. 
After checking your video or pictures, we could deliver some motor parts (e.g. hall sensor) for maintenance.
Also, you could deliver them back to our factory(I'm afraid that you have to bear delivery fee, both way), 
We will make maintenance as possible as we could. For repair fee, we could bear the cost for 1 year. 


QS Motor Manufacture

Certification: Business License, Patent Certificatie, ISO9001 Certificate,CCC Certificate, CE Certificate, Brand Certificate.




No QS Motor, No Super EVs!