Futaba AVCS GY401 S. M Rate Gyro Set With S9254 Servo. The item “Futaba AVCS GY401 S. M. M Rate Gyro Set With S9254 Servo” is in sale since Thursday, December 7, 2017. This item is in the category “Toys & Games\Radio Control & RC Toys\RC Model Vehicle Parts & Accs\Other RC Parts & Accs”. […]