Theta Servos Razor-C1 Brushless High Voltage Servo (Black Edition)

Read Reviews
Write a Review
Theta Servos Razor-C1 Brushless High Voltage Servo (Black Edition)
In Stock Online
Usually ships in 24 hours
FREE Shipping Eligible! Learn More
Price: $129.99
Note: Manufacturer does not allow coupons
This item earns up to 130 VIP Reward Points Learn More

The Razor C1 Theta Servo is a full size brushless servo that is capable of handling high voltage of up to 8.4V. The high torque brushless servo delivers incredible power and can be used for RC helicopters, airplanes, cars, and trucks. Featuring NFC technology, the Razor series of servos can tune and optimize performance through an Android device. Settings such as servo centering (servo offset), refresh rate, acceleration, and PID control loop are all available for tuning. 


  • All black design
  • High voltage compatibility
  • Brushless motor
  • Metal gears
  • Precision centering 
  • NFC Wireless tuning via Android devices
  • 25T Output shaft 
  • All black cables
  • Neutral position: 760uS | 1520uS - Selectable
  • Sanwa SSR Compatible

  • Operating Voltage: 5V - 8.4V
  • Torque:
    • 2.6A:
      • 6V: 374 oz/in (27kg-cm)
      • 7.4V:  471oz/in (34kg-cm)
      • 8.4V: 499 oz/in (36kg-cm)
    • 5A:
      • 6V: 513 oz/in (37kg-cm)
      • 7.4V:  610 oz/in (44kg-cm)
      • 8.4V: 666 oz/in (48kg-cm)
  • Speed:
    • 2.6A:
      • 6V: 0.084 sec/60
      • 7.4V:  0.071 sec/60
      • 8.4V:  0.06 sec/60
    • 5A:
      • 6V: 0.079 sec/60
      • 7.4V: 0.067 sec/60
      • 8.4V:  0.056 sec/60
  • Weight: 73g (2.57 Oz)
  • Motor Type: Brushless
  • Spline: 25T

This product was added to our catalog on May 4, 2022

Verified Owner
Thursday, Jun 23 2022 (11 months ago)
Theta Servos Razor-C1 Brushless High Voltage Servo (Black Edition)
Even though this servo is mainly marketed for large scale helicopters I used it for steering my ET48 2.0: and I have to say I'm really enjoying the superior torque, precision and speed. I'v only used a couple of battery packs so I can't say much for reliably but I'm guessing it's designed for the normal abuse of a flybarless systems it should hold up well for Vehicles.

Only wish the app to access setup options for the servo was endorsed by Google Play as the app will need to be side loaded into your Android phone and for some it's not a very secure option. At the moment I've not accessed the setup options but it runs great out of the box anyhow. However accessing setup would allow options for increasing both speed and torque which would be even better especially for the value of this great servo.

To access setup options you will need an android phone with NFC enabled hardware.