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.
  • LEAD TIME: Ships within 72 Business Hours
  • Free Shipping in Continental USA

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! 


1- QS 120 2kW Mid drive motor with 10t sprocket for 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


EM-100 Controller


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)

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.


Max Battery Current: 150 amps
Max Output: 10,800w or 10.8kw

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

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