Arrma BLX120 Brushless 4S ESC ARA390264

Arrma BLX120 Brushless 4S ESC ARA390264
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Price: $109.99
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This is an Arrma BLX120 Brushless 4S ESC for the 4S Kraton BLX 4x4 and Outcast BLX 4x4. Fitted with super-reliable EC5 connectors and sporting a built-in cooling fan for reduced heat during intense driving action, the BLX120 ESC has over voltage 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.


  • Super-reliable EC5 connectors
  • Built-in cooling fan
  • Over-voltage protection
  • 2-stage LiPo cut off
  • High-quality 12AWG wires
  • 6V BEC unit
  • Three-mode throttle profile
    • Forward
    • Reverse
    • Brake

1x BLX120 Brushless 4S ESC
1x Loop Connector


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: 6V
BEC Current: 3A
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: 12AWG
ESC Battery Connector Type: 2xEC5

This product was added to our catalog on May 20, 2019

Verified Owner
Wednesday, Mar 24 2021 (4 months ago)
Arrma BLX120 4S Brushless ESC
This is exactly what wanted, needed to up the power on my Typhon 3S
it work like a charm. Delivery was speedy. Amain is my new fav parts store!
Verified Owner
Friday, Jul 24 2020 (12 months ago)
Arrma BLX120 4S Brushless ESC
I'm a big fan of how arrma electronics bolt mount to arrma vehicles. Solid for bashing. Fairly simple, limited programmability. But hey, it's for a basher! 3s, 4s compatible so it's a great upgrade for the blx line.