Arrma BLX120 Brushless 4S ESC, AR390264

In stock

The ARRMA BLX120 120A waterproof ESC provides consistent power control and is 4S LiPo ready



  • Waterproof
  • 4S LiPo ready
  • Fitted with EC5 connectors
  • Three mode throttle profile - Forward/Reverse/Brake
You're reviewing:

Arrma BLX120 Brushless 4S ESC, AR390264

Your Rating

Product Information

Fitted with super-reliable EC5 connectors and sporting a built-in cooling fan for reduced heat during intense driving action, the BLX120 ESC has overvoltage protection, and a two-stage LiPo cut off for added cell management.

The fitted 12AWG high-quality wires and 6V BEC unit are combined with a three-mode throttle profile (FWD/REVERSE/BRAKE) to provide the ultimate driving experience.


Battery usage
3S LiPo (11.1V) or 4S LiPo (14.8V)
Low Voltage Cut-Off (LVC)
3.4V per cell
Thermal Protection Temperature
125°C / 257°F
Over-Voltage Protection
Over 17.2V
BEC Voltage
BEC Current
ESC Length
43mm / 1.69"
ESC Height
34mm / 1.34"
ESC Width
54.5mm / 2.15" (Including hold-down tabs)
ESC Weight
150g / 5.3 oz
Receiver Wire Length
170mm / 6.70"
Battery Wire Length
225mm / 8.86"
Motor Wire Length (Including Connector)
200mm / 7.87"
Switch Length
21mm / 0.83"
Switch Width
13.3mm / 0.52"
Switch Height
16mm / 0.63"
Motor Bullet Connector Size
4mm / 0.16"
Wire Specifications
ESC Battery Connector Type