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KST X12-508 Micro Cyclic Coreless HV Servo

KST X12-508 Micro Cyclic Coreless HV Servo

Regular price $59.99 CAD
Regular price Sale price $59.99 CAD
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The micro KST X12-508 is designed to work with micro helicopters (cyclic use) such as Goblin 380/420/420C, Align Trex 300/450/470, OMP M4/M4 Max, Goosky RS4 Venom and other helicopters using micro servos. The KST servos has been proven to be one of the most reliable and durable servos for the last ten years.  


  • Brushless DC Motor
  • Hardened Steel Gear 
  • Programmable via KST Programming Box
  • Great temperature rage: -20℃ to +65℃
  • Aluminium case
  • Potentiometer sensor


  • Operating Voltage: DC 6V-8.4V (rated for 7.4V)
  • Torque:
  • Speed:
    • 0.09sec/60°@6.0V
    • 0.08sec/60°@7.4V
    • 0.07sec/60°@8.4V
  • Working Frequency: 1520us/333Hz, 900us-2100us
  • Size: 23x12x27.5mm
  • Weight: 20g (~10%)


  • (1) Micro Cyclic KST X12-508 Coreless servo

Customer Reviews

Based on 1 review
Darryl Carpenter
KST X12-508 Micro Servos

My Blade Fusion 360 came stock with the same servos as my Blade 230s. No surprise when one of the original 360 servos got the gears stripped so I replaced all the Horizon Hobby ones with KST. They perform perfectly and are barely warm after a flight whereas the HH servos would be hot.
Very impressed with performance and price.
Thanks Rotorquest for great products and quick service.