Futaba GY401 Gyro with S9254 Digital Servo FEATURES: AVCS System: Since the rudder trim changes the front, rear and other heli attitudes change and are automatically cancelled INCLUDES: One GY401 gyro One S9254 Digital servo, available separately One .81 round servo horn, one 1.8 round servo horn one 1.25 FEATURES: AVCS System: Since the rudder trim changes the front, rear, and other heli attitudes change and are automatically cancelled; INCLUDES: One GY401 gyro One S9254 Digital servo, available separately One .81 round servo horn, one 1.8 round servo horn one 1.25; INCLUDES: One GY401 gyro One S9254 Digital servo, available separately One .81 round servo horn, one 1.8 round servo horn one 1.25