Firma 70A Brushed Smart ESC, 2S-3S: IC3 / 35T Brushed Motor Combo

Firma 70A Brushed Smart ESC, 2S-3S: IC3 / 35T Brushed Motor Combo
Firma 70A Brushed Smart ESC, 2S-3S: IC3 / 35T Brushed Motor Combo
Firma 70A Brushed Smart ESC, 2S-3S: IC3 / 35T Brushed Motor Combo
Firma 70A Brushed Smart ESC, 2S-3S: IC3 / 35T Brushed Motor Combo
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Availability: Sorry we are out of stock but have more on the way.
SKU: 100025064
Part #: SPMXSEMC12
UPC: 605482162019
MFG: Spektrum
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Firma 70A Brushed Smart ESC, 2S-3S: IC3 / 35T Brushed Motor Combo

The Spektrum™ Firma 70 amp Brushed Smart ESC and motor combo is waterproof and ready to use in most 1/10th scale RC crawlers. Featuring programming options that make it easy to tune for off-road scalers and rock crawlers on or off the trail.

This ESC and Motor Combo is an excellent choice to complete your 1/10th scale off-road crawlers and scale rigs. The ESC and Motor feature industry leading tunability and accessibility, making it easy to adjust settings to get the best performance out of your crawlers, at home or on the trail.

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 — together, creating the best-performing RC system for your vehicle imaginable.

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 an extra layer of confidence that your electronics are all operating at their best.

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

Firma ESCs not only gather the data but also send it to your transmitter in real time, instead of only storing it for after-run study. You're able to 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!


  • Smart all-in-one telemetry
  • Full Smart functionality
    • Provides Spektrum Smart battery data, input voltage, esc temperature, esc amperage, RPM, and Text Gen Telemetry data over one wire. No additional sensors required
  • Includes Spektrum 35T Rebuildable Brushed Motor – Excellent completion option for 1/10 scalers and rock crawler models running 2S or 3S LiPo power
  • Integrated LED light power outputs for simple installation without the need of additional receiver ports
  • Includes 2 LED Light Strings (Red and White)
  • 70 Amp continuous power - excellent for 1/10 scale on-road and off-road racing and 1/10 scale crawlers and scalers
  • 2S-3S LiPo Compatible
  • Waterproof ESC*
  • Multiple options for easy programming:
    • Smart ESC Programming Box
    • SmartLink USB Updating and Programmer application
    • Programming from Transmitter via Text Gen Telemetry
  • 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
  • Compact for easy installation in most applications
  • Ready to install — no soldering required
  • Aluminum heat sink for high efficiency
  • Adjustable high-power BEC (6V or 7.4V, 4amp)
  • Firmware updatable through the Smart ESC Programming Box
  • High heat-resistant IC™ connectors, backwards compatible with EC™ connectors
  • Limited 1-year warranty

In The Box:
(1) Spektrum Firma 70A Brushed Smart ESC
(1) Spektrum Firma 35T Rebuildable 3-Pole Brushed Motor
(1) Product Manual

Needed to Complete:
Spektrum™ Surface Receiver
2S or 3S Lipo Battery with EC3 or IC3 Connector
Spektrum Transmitter

Turns: 35T
Forward: Yes
Reverse: Yes
Amperage: 70A
Programmable: Yes
Product Width: 1.18" (30 mm)
Technology: Smart
BEC: Yes
BEC Voltage: 6V / 7.4V User Selectable
Input Voltage: 2–3 Cell Li-Po / Li-Fe; 5–9 Cell Ni-MH / Ni-Cd
Motor Limit: 540 / 550 Size Brushed Motors
Product Application: Crawling, Surface
Product Height: 0.71" (18 mm)
Maximum Burst Current: 200A
Maximum Continuous Current: 70A
Motor Type: Brushed
Speed Control: Included
Auto Cutoff: Yes
BEC Continous Current: 4A (Shared Between Receiver and Aux Light Outputs)
Low-Voltage Cutoff Programmable: Yes
Number of Poles: 3
Product Weight: 1.76 oz (50 g)
Water-Resistant: Yes
Adjustable Timing: No
Brakes: Integrated with ESC
Connector Type: IC3, 3.5mm Bullet
Product Length: 1.41" (36 mm)
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