KST X20-8.4-50 Standard Digital Metal Gear Servo

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The KST X20-8.4-50 is an incredibly powerful servo that features a full CNC aluminum case, high power coreless motor, and metal gears throughout. Boasting an incredible 527 oz/in of torque at 6V, theX20-8.4-50 will suite a wide variety of RC applications from giant scale aircraft, 1/8 scale nitro and electric off-road or on-road vehicles, crawlers, and much much more!


  • Standard size aluminum case
  • Coreless Motor
  • Full metal gears
  • Dual ball bearings
  • HV compatible

Operating Voltage: 
Size: 40.5x21x42mm (width x height x thickness) 
Torque: 38kg.cm @ 6.0V; 45kg.cm @ 8.4V | 527oz/in @ 6.0V; 624oz/in@ 8.4V
Speed: 0.20sec/60 @ 6.0V; 0.15sec/60 @ 8.4V 
Weight: 78g 
Working Frequency: 1520us/333Hz, 800us - 2200us 
Motor: Coreless
Ball Bearing: 2BB 

This product was added to our catalog on October 4, 2017