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Spedix GS40A 4in1 Blheli_32 40A ESC (2-6S)

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The GS40A 4in1 ESC is a 6S compatible ESC capable of outputting a continuous 40A current. When designing this ESC, spedix engineers have attempted to make this the best 40A ESC on the market and have not taken any corners. To start, the GS40A uses 40v MOSFETs (most ESC use 30V), this results in an ESC that produces less noise, is more stable and has a faster response. This combined with BLHeli_32 firmware will let you squeeze every last ounce of performance from your quadcopter when running Dshot 1200.

Apart from the impressive MOSFETs, the GS40A us 6S compatible and includes a metal heatsink and 6 layer PCB to ensure the ESC runs cool and can handle the high current from the most demanding power hungry motors. The ESC also has a layer of conformal coating to add to the reliability of the electronics.

To top it all off the GS40A includes vibration damped mounts, a silicone battery wire, silicone flight controller connection wires. And if you have any noise issues when running bigger motors/props, a capacitor is included to filter it out, just in case.

Key Features

  • 40A continuious current
  • 6S compatible
  • BLheli 32 firmware (Dshot1200)
  • Metal heatsinc
  • 40V MOSFETs
  • Includes silicone connection wires and battery wire


  • Firmware: BLHeli_32
  • Input: 2S-6S
  • Constant:40A
  • Burst >45A (10s)
  • Size: 38.5x43x6mm
  • Weight: 11.8g (not including cables)
  • Built in current sensor