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QS138 70h V1 Motor

$430.50 USD $430.50
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1-Year + 180-Day Warranty

So that you can buy with confidence, we provide a comprehensive warranty on every product.

  • Warranty Period: This product comes with a 12-month standard warranty.
  • Extended Warranty: Buy from our official website and you can register directly for the extended warranty, adding a further 180 days of coverage.

For more details, see the [Warranty Policy].

After your purchase, be sure to complete [Product Registration] to activate your warranty.

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    If you are not satisfied, you may return or exchange the item within 30 days of delivery.
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    For extra peace of mind, we recommend adding Seel Shipping Protection at checkout. With this coverage you can file a claim directly for shipping delays, loss or damage, and receive faster handling and stronger protection.

Please note that if shipping protection is not added, compensation is handled according to the carrier's rules and the applicable conditions. We are always happy to help with logistics inquiries, but the scope of compensation follows the carrier's policy.

For full details, please see the [Shipping Policy] and [Return Policy] pages.

Features

Specifications
Product Specifications Value

Product Name

 QS138 70h V1 Motor
Model Number 8164740759850
Age Range 5+
Shipping Free shipping
Delivery Time 1–5 days

Reviews (434)

Customer Reviews

Based on 12 reviewsVerified Checkmark
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04/07/2026
Eddy Raw
04/07/2026
Amazon Customer
04/07/2026
ris999ing
04/07/2026
Shimazori
04/07/2026
Fussara

Payment & Security

Payment methods

  • American Express
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  • Google Pay
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  • Union Pay
  • Visa
  • Klarna
  • Afterpay

Your payment information is processed securely. We do not store credit card details, nor do we have access to your credit card information.

This motor is perfect for medium size electric motorcycles. The QS138 70H is well known around the world for its ability to produce power in a small form factor. A tried and true motor that packs a hefty punch for its size and weight. This motor is capable of over 30kw Bursts! 

Includes

1- QS 138 3kW Mid drive motor with 10t sprocket for spline drive

Key Features 

  • Light weight and small dimension compared to other motors of similar power outputs
  • V configured rotor design allows for higher RPM with flux weakening
  • High Torque suitable for high performance high load situations such as climbing and racing.
  • Supports regenerative braking
  • Proven reliability

Compatibility

EM-150 & Em-200 Controller

Specification

Motor Type: BLDC Inner Rotor Motor
Brand: QS Motor, QSMOTOR
Motor Design: Single Axle
Matched Tire: 12 inch Wheel (as default)
Magnet Height: 70mm, 5 pole pairs
Dimension: 162x210mm
Rated Power: 6000W
Peak Power: 10000W
Rated Voltage: 72V
Speed: 3800RPM (basic RPM)
With Flux Weakening(RPM): 6000RPM
Max Torque: 45-55N.m
Cooling Method: Air Cooling
Max Efficiency: 94%
Continuous Battery Current: 67A (72V)
Peak Battery Current: 140A (72V)
Thermic Probe: KTY83/122 (as default)
Working Temperature: 70-120C, peak 150C
Hall Sensor: Single Hall Set with Waterproof Connectors
Phase Wire: 16mm2 Cross Section (not include insulation layer)
Waterproof Grade: IP66
Color: Black
N.W./G.W.: approx. 11kgs/12.79kgs
Package Dimensions: 34cmx34cmx33cm/piece

E&C Findings

Based on our testing we have come up with some alternative ratings. These ratings are strictly our opinion and warranty will not be provided for any motor pushed beyond QS recommended ratings.

Details

Max Battery Current: 200 amps
Max Output: 14,500w or 14.5kw

We recommend buying our E&C sprocket to ensure proper fitment and to reduce the chance of damage to the spline drive

    Brand:
    Electro & Company Inc.
    Category:
    All Products
    SKU:
    400-0006
    Tags:
    All Products, Holiday Sale, On Road Kart, Pit Bike Fab, QS Motors, QS Products

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