Spedix LS40 Slim F4 3-6S 32Bit 40A ESC

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The Spedix LS40 is an incredibly slim and compact ESC, especially for packing a 40A punch! It's protected from heat buildup and impact by an aluminum heatsink and features and integrated RGB LED for extra style points. 

Check out all our individual ESCs and our Spedix selection!


  • Equipped with the latest STM32L4 chip (F4 Core) and BLHeli_32 firmware, LS40A has the fastest response speed compare to any other similar products in the market. 
  • Ultra-slim design. LS40A fits narrower arms of modern racing drones guaranteeing a clean build.
  • Powered by full-size 40V MOSFET to ensure extreme reliability.
  • Customized aluminum heat sink for improved cooling and impact resistance.
  • Intergrated RGB LED support multiple color settings.


  • Input Voltage: 3-6S
  • Max. Continuous Current: 40A
  • Burst Current(10 Sec.): 50A
  • BEC: No
  • Current Detection: No
  • Firmware: BLHeli_32
  • Integrated RGB LED
  • Dimensions: 9x38x6mm
  • Weight: 7.5g


    • 1x Wired Spedix LS40 Slim 40A 32Bit F4 ESC
    • 1x Heat Shrink