Xpert KD2 Standard Size Full Aluminum Servo

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This is the Xpert HS-6403-HV KD2 Standard Size Full Aluminum Servo.


  • Developed and tuned by World Champion Helicopter Master, Kyle Dahl.
  • All new software algorithm with the best "connection" with your helicopters.
  • All new motor and gear set design with enlarged 2mm gear alignment pins for better durability under impact.
  • Auto Adaptive DUAL BAND (760/1520us)
  • Auto Adaptive FREQUENCY RANGE (50-1000Hz)
  • Quick release cable that allows easy and quick installation for all helicopters.
  • Brushless motor design provides extremely high speed, top efficiency, and low power consumption.
  • 4096 resolution and SIC (Single Integrated Circuit) for the highest performance and durability.
  • All Aluminum case for the best thermal dissipation and durability.
  • High-Speed, High-precision 12-bit AD converter and CPU calculation
  • Fail safe
  • Over current protection
  • Over temperature protection
  • Start sonorant


  • Power Supply: 7.4V~8.4V
  • Speed (sec/ 60°): 
    • @7.4V: .07 sec/60°
    • @8.4V: .062 sec/60°
  • Torque (oz/in): 
    • @7.4V: 366.85 oz-in
    • @8.4V: 416.40 oz-in
  • Torque (kg/cm): 
    • @7.4V: 26.43 kg-cm
    • @8.4V: 30.00 kg-cm
  • Dimensions: 40x40.5x20 mm
  • Weight: 73.2 g
  • Range: Auto Adaptive FREQUENCY RANGE (50-1000Hz)
  • Center Position: Auto Adaptive DUAL BAND (760/1520us)
  • Applications: Helicopter Cyclic
  • Matching Gear Set: XGS-S232
  • Matching Case: