I have just completed an upgrade, installing a very powerful CYCMotor X1 Pro Gen4 motor with 6000W of power and 280 Nm of torque! Consider that E-Bikes have torque ratings not exceeding 120 Nm. It is a surface-to-air missile and on dirt terrain, it glides on the air of its fat tires. Twist throttle, like a motorcycle, in addition to pedal assist for starting. It has a very detailed App that allows you to create custom power delivery based on the routes, whether they are acceleration tests or mountain trails. It is equipped with a 40T chainring and a 12-speed 10/50 drivetrain. I have climbed 25...