QS120 (2000w) with Spline Drive - Electro & Company Inc.
QS120 (2000w) with Spline Drive - Electro & Company Inc.
QS120 (2000w) with Spline Drive

QS120 (2000w) with Spline Drive

Regular price$499.00
Shipping calculated at checkout.

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QS120 72V IPM PMSM Mid Drive Motor

This motor is perfect for small & medium to large size electric motorcycles. This is the more compact version of the infamous 138 70h model. If you have a tight space but need big power the qs120 is for you. This motor is capable of over 15kW Bursts! 


1pc X QS 120 2kW Mid drive motor with 10t sprocket for spline drive

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

Key Features 

  • Light weight and small dimension compared to other motors of similar power outputs
  • High Torque suitable for high performace high load situations such as climbing and racing
  • Supports regenerative braking
  • Proven reliability


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

Rated Voltage: 72V (as default)

Speed: 60KPH 

No-load rpm: 2800rpm without flux weakening, 4400RPM with flux weakening.

Max Torque: approx 45.4N.m without Reduction ratio, approx 216.7N.m with 1:4.77 Reduction ratio  

Reduction ratio: 1:4.77 (as default)

Max Efficiency: 88%

Continuous Battery Current: Pending (72V)

Peak Battery Current: 60A (72V)

Suggest Peak Phase Current: 250A

Thermic Probe: None as default (KTY83/122 is available, please let sales know if needed)

Working Temperature: Pending

Hall Sensor: Single Hall Plate with Waterproof Connectors

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

Hall Sensor Phasing angle: 120 degree

Waterproof Grade: IP54

Color: Black 

N.W./G.W.: 10.8kgs/11.5kgs   

Package Dimension: 34cmx34cmx33cm

Axle matched with 428 sprocket, teeth optional(12T, 13T, 14T...etc)


EM-100 Controller

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 recomended ratings.


Max Battery Current: 150 amps

Max Output: 10,800w or 10.8kw

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