Firma 85 Amp Brushless Smart ESC 2S - 3S

Firma 85 Amp Brushless Smart ESC 2S - 3S
Firma 85 Amp Brushless Smart ESC 2S - 3S
Firma 85 Amp Brushless Smart ESC 2S - 3S
Firma 85 Amp Brushless Smart ESC 2S - 3S
Firma 85 Amp Brushless Smart ESC 2S - 3S
Firma 85 Amp Brushless Smart ESC 2S - 3S
Firma 85 Amp Brushless Smart ESC 2S - 3S
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Availability: In stock available to ship within 24 hours.
SKU: 100022839
Part #: SPMXSE1085
UPC: 605482716441
MFG: Spektrum
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Firma 85A Brushless Smart ESC, 2S - 3S

Spektrum Firma 85A Smart ESC for surface vehicles is waterproof and delivers power and intelligence all-in-one. Without additional sensors or modules, they feed battery and ESC telemetry data straight to your radio in real time, all over one connection.

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 RPM, 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
  • 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
  • Ideal for 2WD and 4WD 1/10th scale surface applications running on 2s Lipo setups
  • 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 IC™ connectors, backwards compatible with EC™ connectors
  • Limited 1-year warranty

What's in the Box?
(1) Spektrum™ Firma™ Smart ESC
(1) Spektrum Smart sticker sheet
(1) Product Manual

Needed to Complete:
(1) Spektrum™ Surface Receiver
(1) Spektrum Smart Technology LiPo Battery
(1) Spektrum Transmitter

Auto Cutoff: Yes
Battery Input Lead: 12AWG 5.1" (130mm)
Battery Type: LiPo (3.7V per cell)
BEC: Yes
BEC Continous Current: 4A
BEC Maximum Burst Current: 8A
BEC Type: Switch Mode
BEC Voltage: 6V/7.4V
Brakes: Yes
Connector Type: IC3
Forward: Yes
Input Voltage: 7.4 - 9.6V (2-3S LiPo, 5-9 cell)
Low-Voltage Cutoff Programmable: No
Maximum Burst Current: 550A
Motor Limit: With 2S LiPo KV ≤ 5000 - With 3S LiPo: KV≤3000
Motor Output Lead: 12AWG 5.1" (130mm)
Motor Type: Brushless - Sensorless
Output: 85A
Output Connector: 4mm Bullet
Overload Protection: Yes
Product Height: 1.3" (33 mm)
Product Length: 1.7" (43 mm)
Product Weight: 0.255lbs (116g)
Product Width: 2.1" (53 mm)
Programmable: Yes
Reverse: Yes
Technology: Smart
Time Delay Brake: Yes
Water-Resistant: Yes
Wire Gauge: 12 AWG
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