Parts/Radio & control/Servos/KO Propo RSx4S Response H.C Servo w/4S Selector (High Voltage)
KO Propo RSx4S Response H.C Servo w/4S Selector (High Voltage)
KO Propo

KO Propo RSx4S Response H.C Servo w/4S Selector (High Voltage)

Part # KOP30144
Where to buy
$140.00
AMain Hobbies
Seen Oct 12, 2026
$140.00Buy
Prices are as last seen at the store; stock is not tracked.

About this part

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. This combo includes the 4S servo selector to change between different preset parameters.

Model Presets:
Five presets are installed in the model memory of the RSx4S. These allow for refined servo performance based on the vehicle and driving surface. Using the included 4S selector allows for easy changes between servo profiles.

Features:
  • 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
Specifications:
  • 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
Includes:
  • (1) KO Propo RSx4S Response Servo
  • (1) 4S Servo Selector
  • (4) Grommets
  • (4) Eyelets
  • (1) Screw

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