The Tamiya is the best servo saver you can install in the RB6. It fits perfectly and has a strong spring. The original Kyosho servo saver is way to soft.
You need the servo saver and the aluminum horn:
300051000 - Tamiya Hi-Torque Servo Saver
300054369 - Tamiya RM-01 HT Servo Saver Alu. Horn
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