When controlled with a radio control system, most hobby servos offer 90° (45° either direction) rotation right out of the box. This can sometimes be increased if your radio system offers end point adjustments or your servo controller has a 180° jumper pin. If you are using Hitec digital servos, you simply want to purchase the hand-held programmer to increase the rotation. If you have a Hitec or Futaba analog servo that only offers 90° of rotation, the amount of rotation can sometimes be increased to 180° by performing a simple modification.
Note: You can purchase Hitec servos from us that are pre-modified in our own manufacturing facility on the individual Hitec servo pages. This modification voids all ServoCity and Hitec warranties.