Xpert RC SI-4401-HV Aluminum Case "Super Torque" High Voltage Brushless Servo

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This is the Xpert RC SI-4401-HV High Voltage (6.0V~8.4V), Standard Size, High Strength Metal Gear, Digital Servo.

Features & Specifications:

  • 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.
  • Light weight design
  • Aluminum middle case for optimized thermal dissipation.
  • Strong Metal Gear
  • Glitch-free
  • Sophisticated error correction
  • High-Speed, High-precision 12-bit AD converter and CPU calculation
  • Fail safe
  • Over current protection
  • Over temperature protection
  • Start sonorant

Dimensions: 40x37.80x20 mm

Weight: 62.50 g


  • @6.0V: .111sec/60
  • @7.4V: .090 sec/60
  • @8.4V: .079 sec/60


  • @6.0V: 13.43 kg-cm (186.41 oz-in)
  • @7.4V: 16.56 kg-cm (229.85 oz-in)
  • @8.4V: 18.80 kg-cm (260.94 oz-in)

Matching Gear replacement: XGS72320

Matching Case: XP-01