No Superior Designs RC RS400 Low Profile Racing Servo (High Voltage)

No Superior Designs RC RS400 Low Profile Racing Servo (High Voltage)
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Price: $96.99

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No Superior Designs RC RS400 Low Profile High Voltage  Racing Servo. Designed with speed and precision in mind to deliver an incredible 400oz-in of torque and 0.05 transit speed at 8.4V! Making this servo a top contender for many 1/18 to 1/8 scale on-road and off-road vehicles used for racing, drifting, and anything else requiring lighting fast speed, awesome responsiveness, and great power! Other features include a full CNC-machined aluminum case that provides high durability and improved heat dissipation, an industry leading 5 gear stainless steel gear train that is supported by dual ball bearings, and a high efficiency coreless motor. In addition, using the industry leading 5-gear stainless steel gear-train alongside a high quality magnetic angle sensor that gives the RS400 a superior centering with extreme precision, smooth actuation and unrivaled durability!

NOTE: The power connection plug, or power switch on your ESC, must be disconnected and turned off when not in use to prevent damage to the servo and/or battery! Not recommended to power using a balance plug.


  • Low-Profile case design that saves space and weight
  • 5-gear stainless steel design 
  • Black anodized all CNC-machined aluminum case provides high durability and improved heat dissipation
  • Hardened stainless steel qears
  • High Efficiency Coreless Motor
  • Water Resistant (Not Recommended to submerged)
  • 11 Point O-ring seal
  • Dual Ball Bearings
  • High quality magnetic angle sensor
  • High voltage (HV) 8.4V capable!


  • Type: Low Profile High Speed Racing Servo
  • Motor Type: Coreless
  • Operating Voltage: 5V - 8.4V
  • Gears: Hardened Stainless Steel
  • Spline: 25T
  • Dimension (LxWxH): 40x27x20mm
  • Weight: 64g
  • Case: CNC-Machined Aluminum
  • Torque:
    • 6V: 290oz-in (21kg-cm)
    • 7.4V: 345oz-in (25kg-cm)
    • 8.4V: 400oz-in (29kg-cm)
  • Speed:
    • 8.4V: 0.07 sec/60°
    • 12.6V: 0.06 sec/60°
    • 16.8V: 0.05 sec/60°


  • (1) RS400 Low Profile Racing Servo
  • Multiple composite horns
  • Mounting screws, bushing and rubber grommets

This product was added to our catalog on July 17, 2023