40A 2-4S SimonK ESC w/BEC by RaceTek

Discontinued Online
This item is discontinued and no longer available for purchase. You may want to search our site for a similar item.

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Frederick, MD

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This is the RaceTek 40A 2-4S SimonK ESC with built in BEC, intended for use with multirotor aircraft use.


  • Highest efficiency 100% N-FET design.
  • Highest accuracy with Crystal Oscillator (Temperature won't affect the PWM operating range like other cheap ESC's).
  • No low voltage cutoff, because any cutoff in a multirotor = crash.
  • No over temp cutoff, because any cutoff in a multirotor = crash.
  • Super high refresh rate, no buffering of the input signal, resulting in more than 490Hz response rate.
  • 16KHz motor frequency, giving fastest response of the motor, and quietest operation as well (no 8KHz squeal).
  • Super simple, foolproof operation! Nothing to program other than the throttle range.
  • Don't buy a 40A multirotor ESC that doesn't meet all these criteria! There are a lot of low quality 40A ESC out there!

Max continuous current:
Peak current: 50A (10s)
Voltage: 2-4S
BEC: 5V/3A
Size: 55x24x11mm
Weight: ~28g

This product was added to our catalog on August 20, 2015.