THETA THS921 HV Micro Coreless Servo 

• This high end micro servo from THETA offers MONSTER torque (104oz @ 8.4v) when compared to any other micros on the market, combine that with high speed (0.08 @ 8.4v) and you have an incredible micro Cyclic servo for anything swinging 420mm blades or less.
• It's also 100% high voltage compatible and very precise. Ideal for helicopters, such as the Goblin 380 / 420, Goblin RAW 420, GAUI X3 or X3L, OXY 4 MAX, and many others that benefit greatly from micro servos with huge torque.
• NOTE: Can be used as a tail servo as well.
• Full specs can be found below.

Features

• High Voltage
• High Torque
• High Speed
• Ultra Precision Centering
• Compatible with Futaba type horns/arms (25T) (eg. SAB HA052-S horns)
• Light Weight
• Aluminum case to keep the servo running cool even on hot days!

• Operating Voltage: 5V - 8.4V (direct 2S lipo capable)

Speed:

• 6.0V: 0.11 sec/60
• 7.4V: 0.09 sec/60
• 8.4V: 0.08 sec/60

Torque

• 6.0V: 80 oz/in (5.8kg-cm)
• 7.4V: 94 oz/in (6.8kg-cm)
• 8.4V: 104 oz/in (7.5kg-cm)