The standard MD1.0 transmission has 3 gears and positive torque, but by adding a counter gear and reconfiguring it, this conversion set can be used with 4 gears and anti-torque specifications.

Compared to a 3-gear transmission, the additional gear increases drive loss, but the anti-torque of the motor works to push the rear of the car downward during acceleration, making it easier to gain rear traction. The high stability and acceleration power, especially on corner exits, are very attractive, and will be a big advantage in pursuits.