QS138 90H 72V IPM PMSM Mid Drive Motor


This motor is perfect for medium to large size electric motorcyles. With its extra long body compared to the 70h model you will be able to achieve a higher torque and power. This combo is capable of over 22kW! 



1pc X QS 138 4kW Mid drive motor (tapered shaft with key) with 14T 428 sprocket

1pc X EM-200 QS Controller

1pc X Z6 Throttle


Option Available Upon Selection:

1pc X DKD Display

MX Plug & Play Service - Be Sure to Grab the MX Plug & Play Service so you can save years on your life not stressing about the details. Just plug it in, apply power and go! With this service we build you a custom braided harness complete with Waterproof connectors, Switches, Throttle & Controller that is Pretuned with our Proven EMX setup.


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 performace high load situations such as climbing and racing.
  • Supports regenerative braking
  • Proven reliability

QS138 90H (4000w) EM-200 Kit

  • 1 Week on Standard Combo/Kit

    +1-3 Weeks for Orders including MX Plug & Play Service.