Price Unavailable

Product Features

  • High-voltage (direct 2S Li-Po/Li-Fe battery) compatible
  • Lower price point, but higher performance value
  • Longer-lasting plastic composite gear material
  • Ball bearing-supported output shaft


The JR® 821HV servo is one of the latest updates for the JR brand. Based on the original and successful DS821 servo, it has the new high-voltage motor allowing it to be used unregulated when using 2-cell Li-Po power sources. The DS821HV servo is a powerful, accurate sport digital servo recommended for RC airplane applications up to 1.20-size. For helicopters, the DS821HV servo operates best with 30-size glow models and up to 500-size electric.


  • Size Category: Standard
  • Type: Digital
  • Application: Airplanes up to 1.20 size, 30-size glow, 500-size electric helis
  • Torque: 6.3Kg.cm @ 7.4V
  • Speed: 0.15 sec/60-deg @ 7.4V
  • Length: 38mm
  • Width: 19mm
  • Height: 37mm
  • Weight: 42.5g
  • Bushing Or Bearing: Bearing
  • Bearing: Single
  • Motor Type: 3-pole ferrite
  • Connector Type: JR®
  • Gear Material: Nylon composite (note - not compatible with threadlock liquids)
  • Voltage: High-voltage (direct 2S Li-Po/Li-Fe battery) compatible, 6-8.5V

  • Model: JRC821HV

This product was added to our catalog on Thursday 19 January, 2017.