A direct replacement for the stock piece

etc then the HB-2 Controller is the answer

Lane Width: 4

5lbs for more racing and aggressive driving styles

Savox - High Voltage 1/5 Scale Servo 0.17sec / 555.5oz @ 7.4V RGR6000 A direct replacement for theThe SW0236MG is a large scale, and digital servo. It is metal geared with an amazing amount of torque while capable of operating on high voltage. "Plus" series servos feature Soft Start and Sanwa SSR compatibility. Features: Ideal for 1 5 scale off road and large scale aircraft applications Strong metal gear train for added durability. Extremely high torque output. Capable of operating on high voltage. Specifications: Torque @ 6v 30. 0kg 416. 6oz in