Pre-Order | Releasing November 04, 2026

Spektrum Firma 150A Brushless Smart ESC V2, 3S - 4S: IC5

Spektrum - Item No. SPMXSE2155CP
4.3 out of 5 Customer Rating
$109.99
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Feature-packed Firma™ Smart ESCs deliver power and intelligence all-in-one, with no additional modules or links required. This 150A Spektrum Smart Firma Brushless ESC drives your vehicle through almost any conditions imaginable, with explosive acceleration and ultra-smooth performance — while feeding real-time telemetry straight to your Spektrum™ transmitter!

(1) Spektrum™ Firma™ Smart ESC

(1) Spektrum Smart Sticker Sheet

(1) Product Manual

(1) 3-4S LiPo Battery with IC5 Connector

(1) Spektrum Radio and Compatible Surface Receiver

Spektrum Firma 150A Brushless Smart Electronic Speed Control Introduction

Like every component in the Spektrum™ Smart ecosystem, Firma™ Smart ESCs combine "plug-and-play" simplicity with the ability to communicate with other Smart electronics, creating the best-performing RC system for your vehicle.

Firma Smart ESCs do much more than regulate power. They function like a virtual engineer inside your model, providing a direct path to the vital operating data you need to reach peak performance. Firma Smart ESCs give you more confidence that your electronics are all operating at their best.

With Firma Smart ESCs, you'll be better connected to your vehicle than ever without installing extra components that work independently. You won't need additional wires, modules, or links. A Firma electronic speed control provides a one-wire solution for obtaining telemetry data such as RPM, temperature, battery voltage, and capacity.

Firma ESCs gather the data and send it to your transmitter in real-time instead of storing it for an after-run study. You can adjust settings as needed to boost performance on the go. The Firma Smart single-wire telemetry solution has been tested for quality and performance by the best brands in RC. Their verdict? Smart technology is both simpler and superior!

Spektrum Firma 150A Brushless Smart Electronic Speed Control Features

  • Smart all-in-one telemetry
  • Fast, powerful 32-bit ARM M4 processor
  • Waterproof
  • Multiple options for easy programming:
    • Button programming
    • Smart ESC Programming Box
    • SmartLink USB Updating and Programmer application
  • Multi-point protection:
    • Over-current protection
    • Automatic LiPo low-voltage cutoff
    • Thermal protection
    • Failsafe protection
  • Developed and designed by Spektrum™ engineers in partnership with the industry's leading ESC manufacturer
  • High current adjustable BEC (6v or 7.4v @ 4 Amps)
  • Compact for easy installation in most applications
  • Ready to install — no soldering required
  • Rugged plastic case with mounting tabs
  • Aluminum heat sink for high efficiency
  • Cooling fan
  • Adjustable high-power BEC
  • Firmware updatable through the Smart ESC Programming Box
  • High heat-resistant IC5™ connector
  • Limited 1-year warranty
WATERPROOF for the Spektrum Firma 150A Brushless Smart ESC
WATERPROOF

The all-weather, waterproof design of Spektrum™ Firma™ Smart ESCs allows them to perform in nearly any terrain under almost any conditions. Firma ESCs keep you going through dust, gravel, snow, and water.

ONE-WIRE TELEMETRY for the Spektrum Firma 150A Brushless Smart ESC
ONE-WIRE TELEMETRY

No need to connect multiple wires, sensors, modules, and links. With Firma™ ESCs, simple one-wire telemetry transmits a wide range of data directly to your transmitter in real-time, including RPM, voltage, temperature, balance, capacity, and speed.*

*See the compatibility chart for more information.

SMART TECHNOLOGY BATTERY DATA for the Spektrum Firma 150A Brushless Smart ESC
SMART TECHNOLOGY BATTERY DATA

When used with a Spektrum™ Smart LiPo battery, your Firma™ ESC provides battery telemetry that's automatically transmitted to your compatible Spektrum radio in real-time. On your transmitter screen, you'll be presented with helpful information such as the number of cycles, battery percentage, individual cell voltage, and more!

MULTIPLE PROGRAMMING OPTIONS for the Spektrum Firma 150A Brushless Smart ESC
MULTIPLE PROGRAMMING OPTIONS

Multiple programming options are available. Button programming can be used with nothing more needed. Using the Smart Firma™ ESC Programming Box, you can easily change settings at the track to suit driving conditions. An easy-to-use Smart Link USB Updating and PC Programmer app is also available.

FAST, POWERFUL M4 PROCESSOR for the Spektrum Firma 150A Brushless Smart ESC
FAST, POWERFUL M4 PROCESSOR

The Firma™ ESCs' 32-bit M4 processor produces higher resolution signal input and more accurate motor output.

PRODUCT SPECS

Battery Type
LiPo (3.7V per cell)
BEC Continuous Current
150A
BEC Type
Linear
Brakes
Yes
Connector Type
IC5
Forward
Yes
Input Voltage
3S to 4S LiPo (11.1V to 14.8V)
Maximum Burst Current
950A
Motor Type
Brushless
Output
6V/7.4V @ 5A
Output Connector
4mm Bullet
Product Height
1.5" (38 mm)
Product Length
2.3" (58 mm)
Product Weight
238 g (8.4oz)
Product Width
1.97" (50 mm)
Reverse
Yes
Water-Resistant
Yes