KO Propo KOP30145 RSx4S Power H.C Servo (High Voltage)

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  • Regular price $199.99

Currently In Stock: 6

The KO Propo RSx4S Response H.C Servo has been designed for 1/8th scale off-road or on-road and 1/10th scale off-road. KO Propo has given this servo serial compatibility and EX-NEXT advanced mode. These combined give this RSx4S better response. By using the telemetry function of EX-NEXT, the ICS parameters of the servo can be changed from the radio. EX-NEXT supports conventional HCS and standard communication specifications, it can be used not only with the serial-compatible KR-420XT but also with a wide variety of receivers.

Model Presets:
When paired with the optional 4S Servo Selector (KOP61032) the user can change between five presets servo profiles. These allow for refined servo performance based on the vehicle and driving surface.

  • Core-less motor
  • Reinforced stainless steel final gear
  • Hard anodized aluminum gear
  • Dual ball bearings
  • Hard servo gear shaft
  • Aluminum top case
  • Aluminum heat sink middle case
  • Black cable
  • Gold plated connector
  • Serial Compatible
  • HCS Compatible
  • Operating voltage: 6.0-7.4V
  • Torque:
    • 6.0V: 201.36oz-in (14.5Kg-cm)
    • 7.4V: 244.41oz-in (17.6Kg-cm)
    • 8.4V: 269.41oz-in (19.4Kg-cm)
  • Speed:
    • 6.0V: 0.07sec/60deg
    • 7.4V: 0.06sec/60deg
    • 8.4V: 0.06sec/60deg
  • Weight: 75.3g
  • Dimensions: 40.4×37.5×20mm


  • (1) KO Propo RSx4S Power Servo
  • (4) Grommets
  • (4) Eyelets
  • (1) Screw