1、Fitment: 72v 450A brushless dc motor controller is fit for electric motorcycle electric scooter brushless dc driver, with good compatibility, easy to install. 2、Enhance Motor Control: After replacing it with our controller, it can significantly increase the speed of the motor and effectively increase the motor power. 3、Stable Performance: Sine wave controller with stable work performance, not easy to fluctuate, can be well matched QS hub motor or QS middrive motor 4、Material and Workmanship: DC motor controller is made of ABS, high temperature and corrosion resistance, professional manufacturing, exquisite technology, can be used stably for a long time. 5、Battery Protection: Our motor controller is versatile, it protects the battery and extends battery life, it also increases the driving distance.