Spektrum RC Firma 150 Amp Brushless Smart ESC

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Price: $159.99
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Spektrum Firma 150 Amp Brushless Smart ESC. 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
  • 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
Forward: Y
Reverse: Y
Brake: Y
Time Delay Brake: Y
Continuous Maximum Current: 130A (760A Max Burst)
Input Voltage: 7.4 - 14.8V
Input Connector Types: IC5 with 12AWG, 160mm wire
Output Connector Types: 4.0mm Female Bullet with 12AWG, 150mm wire
Length: 2.2in (57mm)
Width: 1.4 (37mm)
Height: 1.5in (38mm)
Weight: 80g (2.8 oz)
BEC Voltage: 6V (4A)

  • (1) Spektrum™ Firma™ Smart ESC
  • (1) Spektrum Smart sticker sheet
  • (1) Product Manual
Forward: Y
Reverse: Y
Brake: Y
Time Delay Brake: Y
Continuous Maximum Current: 150A (950A Max Burst)
Input Voltage: 11.1 - 22.2V
Input Connector Types: IC5
Output Connector Types: 6.5 Female Bullet
Length: 58mm (2.3in)
Width: Case = 47.5mm (1.9in) W/ Tabs = 59.5mm (2.3in)
Height: 38.5mm (1.5in)
Weight: 238g (8.4 oz)
BEC Voltage: 6V (5A)

This product was added to our catalog on December 5, 2019

Saturday, Nov 21 2020 (about a year ago)
Spektrum RC Firma 150 Amp Brushless Smart ESC
A great ESC from Spectrum. This is a sensorless designed for running primarily go-fast and "bash" vehicles with all the integrated performance and detailed analytics of the new spectrum system. Improves and "fixes" the low speed cogging issue with most V4 Arrma ESCs. Anyone (^^^) complaining about not knowing it was sensorless clearly doesn't know how to do their research when choosing electronics.
Sunday, Mar 14 2021 (about a year ago)
Spektrum RC Firma 150 Amp Brushless Smart ESC
Works great in my Losi 8ight XTE. I've had it for 6 months and have several hours of run time.
Monday, Mar 29 2021 (about a year ago)
Spektrum RC Firma 150 Amp Brushless Smart ESC
After less then 10mild runs on my new Mojave V2 rtr. This spectrum smart ESC first killed a $50 receiver. Then acting like all was good with a new receiver installed put it all back together. Went outside powered up the the spectrum smart ESC and it killed another $50 receiver along with itself at $150. Nice quiet death while taking out a couple receivers with it!! -out over $250, thanks spectrum.. top notch product right there.
Verified Owner
Thursday, Mar 4 2021 (about a year ago)
Spektrum RC Firma 150 Amp Brushless Smart ESC
Replaced the blx 6s esc with the new smart 150 firma in my notorious . Really nice esc.time will tell.
Verified Owner
Wednesday, Mar 30 2022 (3 months ago)
Spektrum RC Firma 150 Amp Brushless Smart ESC
Amain is the best for your rc parts. Easy to find what parts your looking for showing the compatibility. Your choice of wich Shipping option you want. Amain, don't stop what your doing. Everything is perfect ?
Verified Owner
Thursday, Nov 4 2021 (8 months ago)
Spektrum RC Firma 150 Amp Brushless Smart ESC
me llegó a tiempo voy a montarsela aver como traja a mi Mojave arrma
Friday, Apr 9 2021 (about a year ago)
Spektrum RC Firma 150 Amp Brushless Smart ESC
Same problem as everyone else..brand new Mojave 6s..few runs..killed receiver..4 receivers later I contacted horizon amd they actually hooked me up with 4 sr5 receivers (I had receipts) and I told them to send the blx185 instead..which they did..no problems after that...I traded it yesterday for scx 10 iii brand new in the box hahaha and felt a huge weight lifted off my shoulders...any way jus got home to a lil box in my garage and it was this esc hahaha anyone wanna buy it?? I wouldn’t sell this thing to my worst enemy..jk I would...anyway..it’s trash step down to blx 185..jus as good
Wednesday, Feb 17 2021 (about a year ago)
Spektrum RC Firma 150 Amp Brushless Smart ESC
JUNK!!! I got an infraction v2 and killed the stock one in the first week. Bought another one and it also died within a week. Never buying one again. Get a hobbywing.
Verified Owner
Friday, May 29 2020 (about 2 years ago)
Spektrum RC Firma 150 Amp Brushless Smart ESC
SENSORLESS ONLY!! Shame all around.

Great idea conceptually but how does a $150 esc NOT support sensored motors? As of 5/28/2020, the product amain page does not specify that this is a sensorless ONLY ESC as other product pages seem to. My perception is that detail omission is grossly negligent from a reputable retailer such as amain.

I paid for rush processing and 2nd day air shipping on this order and now that, return shipping and a 15% restocking fee is going to be gone.

Shame on Spektrum for making such a pointless product in the first place. Shame on amain for not listing the lack of sensored motor support and further more, not identifying that it would be a key thing to note in the first place as a mostly great retailer. Shame on me for not figuring that out in the first place on my own.