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Spektrum Firma 85A Brushless Smart ESC / 3300Kv Sensorless Motor Combo, SPMXSEMC01

4.2 out of 5 stars 448 ratings
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Purchase options and add-ons

Brand Spektrum Glasses
Model name Brushless Smart ESC / 3300Kv Sensorless Motor Combo
Voltage 3 Volts
Item weight 1.04 Pounds
Manufacturer Spektrum
UPC 605482692387

About this item

  • Spektrum Firma 85A Brushless Smart Esc / 3300Kv Sensorless Motor Combo, Spmxsemc01
  • Brand: Spektrum
  • Package Height: 6.36 Inches
  • Item Package Weight: 0.44 Pounds
› See more product details

Product information

Technical Details

Model Number ‎SPMXSEMC01
Assembly Required ‎No
Batteries Required? ‎No
Batteries Included? ‎No
Colour ‎Black
Release date ‎Jan. 15 2021
Manufacturer recommended age ‎14 years and up
Item model number ‎SPMXSEMC01
Product Dimensions ‎17.53 x 13.21 x 5.33 cm; 471.74 g
ASIN ‎B08T5VCKY1

Additional Information

Customer Reviews
4.2 out of 5 stars 448 ratings

4.2 out of 5 stars
鶹 Rank
Date First Available Jan. 15 2021
Manufacturer Spektrum

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Spektrum Firma 85A Brushless Smart ESC / 3300Kv Sensorless Motor Combo, SPMXSEMC01

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Frequently bought together

Spektrum Firma 85A Brushless Smart ESC / 3300Kv Sensorless Motor Combo, SPMXSEMC01
This item: Spektrum Firma 85A Brushless Smart ESC / 3300Kv Sensorless Motor Combo, SPMXSEMC01
$189.99
Get it by Saturday, Jun 28
In Stock
Ships from and sold by 鶹.ca.
+
Spektrum Smart ESC Programmer: Avian and Firma, SPMXCA200, Black - RC Vehicle Speed Control Programmer - Includes USB Cable -
$42.98
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Safety and product resources

Product description

Spektrum Firma 85A Brushless Smart ESC / 3300Kv Sensorless Motor Combo, SPMXSEMC01

Top Brand: Spektrum Glasses

Highly Rated
10K+ customers rate items from this brand highly
Trending
1K+ orders for this brand in past 3 months
Low Returns
Customers usually keep items from this brand

Important information

Safety Information

WARNING: Read the ENTIRE instruction manual to become familiar with the features of the product before operating. Failure to operate the product correctly can result in damage to the product, personal property and cause serious injury. This is a sophisticated hobby product. It must be operated with caution and common sense and requires some basic mechanical ability. Failure to operate this Product in a safe and responsible manner could result in injury or damage to the product or other property. This product is not intended for use by children without direct adult supervision. Do not attempt disassembly, use with incompatible components or augment product in any way without the approval of Horizon Hobby, LLC. This manual contains instructions for safety, operation and maintenance. It is essential to read and follow all the instructions and warnings in the manual, prior to assembly, setup or use, in order to operate correctly and avoid damage or serious injury.

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Customer reviews

4.2 out of 5 stars
448 global ratings

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Customers say

Customers like the performance, quality, and speed of the electric motor. They mention it works great, keeps low temperature when cycling through several batteries during a bash, and is a perfect upgrade from a brushed system. Customers also appreciate the value for money.

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PerformanceQualitySpeedTemperature controlUpgradeValue for money
9 customers mention "Performance"9 positive0 negative

Customers are satisfied with the performance of the electric motor. They mention it works great and has no issues so far.

"...It works well in my 1/10 crawler (which I use as a trail truck), works great in my senton, and so it does in my SMT10 monster truck." Read more

"I have had no problems on 3s .and its fast" Read more

"Replaced brushed system in a 2s typhon. Works very well, just as fast as my 3s typhon now." Read more

"Works good and looks good thanks!" Read more

4 customers mention "Quality"4 positive0 negative

Customers are satisfied with the quality of the electric motor. They mention it's a good product and an awesome set up.

"Awesome set up..." Read more

"Good product..." Read more

4 customers mention "Speed"4 positive0 negative

Customers like the speed of the electric motor. They mention it has lots of torque and runs cooler than the VXL3500.

"...arrma senton Mega v3, and it is at least twice as responsive and fast as stock...." Read more

"Replaced brushed system in a 2s typhon. Works very well, just as fast as my 3s typhon now." Read more

"Heap upgrade for my granite to go brushless, mush faster , just remember to upgrade your slipper ." Read more

"...Lots of torque, fast, it runs cooler than the VXL3500" Read more

3 customers mention "Temperature control"3 positive0 negative

Customers like the temperature control of the electric motor. They mention it keeps low temperature when cycling through several batteries during a bash.

"...and it absolutely rips, and has done so for a year, through winter in -20C temperatures, hot summer days in the mud and in sand pits...." Read more

"...Easy to install. And does around 65km on NHB battery. Keeps low temperature when cycling through several batteries during a bash. ..." Read more

"...Lots of torque, fast, it runs cooler than the VXL3500" Read more

3 customers mention "Upgrade"3 positive0 negative

Customers are satisfied with the electric motor. They mention it's a perfect upgrade from a brushed system and a great upgrade for Sento.

"Perfect upgraded from a brushed system couldn’t be happier tons of speed." Read more

"Great upgrade for Sento Mega..." Read more

"Perfect upgrade for brushed granite...." Read more

3 customers mention "Value for money"3 positive0 negative

Customers are satisfied with the value for money of the electric motor. They mention it works great and is dirt cheap.

"Excellent value for money" Read more

"Works great, dirt cheap...." Read more

"Well worth the money..." Read more

Works great, durable.
5 out of 5 stars
Works great, durable.
I have put this combo in my arrma senton Mega v3, and it is at least twice as responsive and fast as stock. I started using 3S batteries on this, and it absolutely rips, and has done so for a year, through winter in -20C temperatures, hot summer days in the mud and in sand pits. It's never failed me, which is why I own 3 of these spektrum motors, one for each of my RC. It works well in my 1/10 crawler (which I use as a trail truck), works great in my senton, and so it does in my SMT10 monster truck.
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Top reviews from Canada

  • Stuart
    5.0 out of 5 stars Great upgrade for Sento Mega
    Reviewed in Canada on June 9, 2025
    Verified Purchase
    Put this system into my son's senton mega.
    Upgraded the spur clutch assembly as well to a 57tooth .8 mod and 16tooth 32p pinion. Using a 2s lipo the difference is very noticeable from the original brushed motor. It's much more alive and fun now.
    Helpful
     Report
  • i88766
    5.0 out of 5 stars Works great, durable.
    Reviewed in Canada on April 17, 2024
    Verified Purchase
    I have put this combo in my arrma senton Mega v3, and it is at least twice as responsive and fast as stock. I started using 3S batteries on this, and it absolutely rips, and has done so for a year, through winter in -20C temperatures, hot summer days in the mud and in sand pits. It's never failed me, which is why I own 3 of these spektrum motors, one for each of my RC. It works well in my 1/10 crawler (which I use as a trail truck), works great in my senton, and so it does in my SMT10 monster truck.
    Customer image
    i88766
    5.0 out of 5 stars
    Works great, durable.

    Reviewed in Canada on April 17, 2024
    I have put this combo in my arrma senton Mega v3, and it is at least twice as responsive and fast as stock. I started using 3S batteries on this, and it absolutely rips, and has done so for a year, through winter in -20C temperatures, hot summer days in the mud and in sand pits. It's never failed me, which is why I own 3 of these spektrum motors, one for each of my RC. It works well in my 1/10 crawler (which I use as a trail truck), works great in my senton, and so it does in my SMT10 monster truck.
    Images in this review
    Customer image
    Helpful
     Report
  • Jesse Begon
    5.0 out of 5 stars Way more power !
    Reviewed in Canada on April 4, 2023
    Verified Purchase
    Bought as replacement for the 12t brushed motor in the aarma vorteks boos 4x2 . The difference is night and day , i swapped a bunch of plastic parts for metal ie shocks A arms slipper gear etc. And also added the 4x4 kit but after all that the truck was slow . Finally i got the spektrum motor upgrade and its easily able to shred all 4 tires like it never has before even on 2s lipo . Definitely would buy again this little budget motor has sooo much power !

    Edit: almost a month later and this beast motor destroyed the differential gear in my vorteks lol , literally ripped the teeth off the ring gear it has that much power on 3s . Proly shoulda ran it on 2s but it was too much fun .
    7 people found this helpful
    Helpful
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  • Richard
    1.0 out of 5 stars Shaft on motor Is brittle.
    Reviewed in Canada on April 27, 2025
    Verified Purchase
    Second time using it and the propeller shaft on the motor sheared off. 👎
    Customer image
    Richard
    1.0 out of 5 stars
    Shaft on motor Is brittle.

    Reviewed in Canada on April 27, 2025
    Second time using it and the propeller shaft on the motor sheared off. 👎
    Images in this review
    Customer image
    Helpful
     Report
  • 鶹 Customer
    4.0 out of 5 stars Works great
    Reviewed in Canada on April 8, 2022
    Verified Purchase
    I have had no problems on 3s .and its fast
    3 people found this helpful
    Helpful
     Report
  • Brooke
    5.0 out of 5 stars Read me first / Lots of misleading Reviews
    Reviewed in Canada on June 17, 2023
    Verified Purchase
    Purchased this Firma 85A Brushless motor for my 1/10 senton 4x4 Mega. The seller is easy to work with.

    Item as described. Easy to install. And does around 65km on NHB battery. Keeps low temperature when cycling through several batteries during a bash.

    PLEASE note the orange and yellow wires must be swapped as seen in picture to reverse motor operation and then can be corrected on remote. You have to read manual of how to set up the parameters. iE.) Battery type, punch level and so fourth. Reversing the wires is completely safe for this non senssored system.
    Customer image
    Brooke
    5.0 out of 5 stars
    Read me first / Lots of misleading Reviews

    Reviewed in Canada on June 17, 2023
    Purchased this Firma 85A Brushless motor for my 1/10 senton 4x4 Mega. The seller is easy to work with.

    Item as described. Easy to install. And does around 65km on NHB battery. Keeps low temperature when cycling through several batteries during a bash.

    PLEASE note the orange and yellow wires must be swapped as seen in picture to reverse motor operation and then can be corrected on remote. You have to read manual of how to set up the parameters. iE.) Battery type, punch level and so fourth. Reversing the wires is completely safe for this non senssored system.
    Images in this review
    Customer imageCustomer image
    12 people found this helpful
    Helpful
     Report
  • Iain
    5.0 out of 5 stars Great combo
    Reviewed in Canada on September 18, 2024
    Verified Purchase
    I used this as an upgrade to the Arrma Granite 4x4 mega brushed. The swap was simple and the difference from stock to this is beyond amazing.
    Helpful
     Report
  • Olivier Brazeau
    3.0 out of 5 stars Très bon ,mais 2x le prix que j ai payé,il i a de ca moins de 1 ans
    Reviewed in Canada on February 10, 2025
    Verified Purchase
    Trop cher maintenant !
    Helpful
     Report

Top reviews from other countries

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  • Marc Hastie
    5.0 out of 5 stars Quality peice of electronics
    Reviewed in Australia on January 30, 2023
    Verified Purchase
    The items came in quality packaging and were displayed nicely in the box. Easy to install. Has made a huge difference to the RC car I installed this in replacing a brushed motor.
    Have used this on NiMh, and 2S and 3S LiPo batteries. All worked well with higher power as expected from larger capacity LiPo.
    Highly recommend this product as an upgrade if that suits your needs.
    Report
  • Eddie
    5.0 out of 5 stars Rustler 2wd Upgrade
    Reviewed in the United States on February 24, 2024
    Verified Purchase
    Bought this to upgrade an old rustler. It was getting time to start replacing batteries and my main is a 4s Outcast v2 so I wanted to battery share. I figured it'd be more beneficial/cost effective if I run them off the same ESCs so they can battery share (this combo is UP TO 3s) and since I have so much into the spektrum ecosystem, I'll merge where I can. You'll need to reverse the motor for 2wd and you'll want to adjust the punch. You can keep all the traxxas parts. Drilling 2 holes on the ESC mount and using a longer screw for the receiver box to mount the button is all I did to mount the ESC to a stock rustler (if your batteries are thick, you can use collars and longer screws to lift the ESC mount for clearance; I also replaced the battery tie down nuts for velcro so i can use 3s hardcase G2s). For the new motor, transmission is stock so I did upgrade the spur/pinion to a metal 86/21 for the extra power the motor produces. The stock is fine if you just want to upgrade cheaply but I'd imagine it would not last long on 3s 100c because stock is plastic, so keep that in mind for spares. This ESC has an IC3 connector so if you have IC5/EC5 batteries you'll need an adapter (if you want to benefit from their smart batteries you need the smart extension). All-in-all, this was a great upgrade and the 3300kv motor is good power for the rustler platform. Without much tweaking, it was hitting between 42-47 mph with more to go. If you're stock, you definitely need to upgrade the rear wheels.

    Update 25 Feb 2024:
    Took it out for an extended run and decided to adjust the punch to 6 (from the factory 5) WOW did that make a huge difference. This thing is a rocket with punch 6 using a 3s 5000mAh 100c battery (G2). I had to adjust the wheelie bar to the lowest setting to keep it from flipping or start walking. Upgrading the shocks to something with a quicker return might help keep the front end down but I was able to feather the speed to ramp it up. What an amazing upgrade and took less than 20min to upgrade. Definitely recommend

    Final Update:
    With all that torque, had to replace driveshafts (factory) as it twisted them in two. Took that time to upgrade the turnbuckles, wheelie bar (to the better metal wheels), and added a can fan. This thing is a rocket but to add any more speed it'll need to be weighted for speed runs.
    Customer image
    Eddie
    5.0 out of 5 stars
    Rustler 2wd Upgrade

    Reviewed in the United States on February 24, 2024
    Bought this to upgrade an old rustler. It was getting time to start replacing batteries and my main is a 4s Outcast v2 so I wanted to battery share. I figured it'd be more beneficial/cost effective if I run them off the same ESCs so they can battery share (this combo is UP TO 3s) and since I have so much into the spektrum ecosystem, I'll merge where I can. You'll need to reverse the motor for 2wd and you'll want to adjust the punch. You can keep all the traxxas parts. Drilling 2 holes on the ESC mount and using a longer screw for the receiver box to mount the button is all I did to mount the ESC to a stock rustler (if your batteries are thick, you can use collars and longer screws to lift the ESC mount for clearance; I also replaced the battery tie down nuts for velcro so i can use 3s hardcase G2s). For the new motor, transmission is stock so I did upgrade the spur/pinion to a metal 86/21 for the extra power the motor produces. The stock is fine if you just want to upgrade cheaply but I'd imagine it would not last long on 3s 100c because stock is plastic, so keep that in mind for spares. This ESC has an IC3 connector so if you have IC5/EC5 batteries you'll need an adapter (if you want to benefit from their smart batteries you need the smart extension). All-in-all, this was a great upgrade and the 3300kv motor is good power for the rustler platform. Without much tweaking, it was hitting between 42-47 mph with more to go. If you're stock, you definitely need to upgrade the rear wheels.

    Update 25 Feb 2024:
    Took it out for an extended run and decided to adjust the punch to 6 (from the factory 5) WOW did that make a huge difference. This thing is a rocket with punch 6 using a 3s 5000mAh 100c battery (G2). I had to adjust the wheelie bar to the lowest setting to keep it from flipping or start walking. Upgrading the shocks to something with a quicker return might help keep the front end down but I was able to feather the speed to ramp it up. What an amazing upgrade and took less than 20min to upgrade. Definitely recommend

    Final Update:
    With all that torque, had to replace driveshafts (factory) as it twisted them in two. Took that time to upgrade the turnbuckles, wheelie bar (to the better metal wheels), and added a can fan. This thing is a rocket but to add any more speed it'll need to be weighted for speed runs.
    Images in this review
    Customer image
    Report
  • Oakley Robinson
    1.0 out of 5 stars Don’t buy
    Reviewed in the United Kingdom on March 26, 2025
    Verified Purchase
    The esc blew up and it maid my servo and resiver blow up to I had only used it twice and it’s corsed me more damage then it’s worth would not recommend
    Report
  • Sehr entäuschent, mir wurde ein gebrauchter Motor und ESC geschickt, dieser Artikel war nicht neu wie beschrieben sondern wurde bereits versandt und zurück gesendet.
    1.0 out of 5 stars Neu bestellt und stark gebrauchten Artikel erhalten
    Reviewed in Germany on March 29, 2024
    Verified Purchase
    Habe einen neuen Artikel bestellt und einen alten/gebrauchten kaputten bekommen. Der Karton war neu foliert aber man konnte erkennen daß er bereits geöffnet war. Frechheit das Rücksendungen nicht besser geprüft werden und als neuer Artikel wieder verkauft werden
    Customer image
    Sehr entäuschent, mir wurde ein gebrauchter Motor und ESC geschickt, dieser Artikel war nicht neu wie beschrieben sondern wurde bereits versandt und zurück gesendet.
    1.0 out of 5 stars
    Neu bestellt und stark gebrauchten Artikel erhalten

    Reviewed in Germany on March 29, 2024
    Habe einen neuen Artikel bestellt und einen alten/gebrauchten kaputten bekommen. Der Karton war neu foliert aber man konnte erkennen daß er bereits geöffnet war. Frechheit das Rücksendungen nicht besser geprüft werden und als neuer Artikel wieder verkauft werden
    Images in this review
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    Report
  • Heather
    1.0 out of 5 stars Item was clearly 2nd hand.
    Reviewed in Australia on March 1, 2024
    Verified Purchase
    Product is damaged, and is not new. It has been modified, does not have original genuine spectrum connector, has been fitted with aftermarket xt60 connector. Battery smart sensor wire is broken. Product is dirty, lack of QC, someone has clearly already returned this and no one has bothered to check if it was new or used or blown up.
    Customer image
    Heather
    1.0 out of 5 stars
    Item was clearly 2nd hand.

    Reviewed in Australia on March 1, 2024
    Product is damaged, and is not new. It has been modified, does not have original genuine spectrum connector, has been fitted with aftermarket xt60 connector. Battery smart sensor wire is broken. Product is dirty, lack of QC, someone has clearly already returned this and no one has bothered to check if it was new or used or blown up.
    Images in this review
    Customer imageCustomer imageCustomer imageCustomer image
    Report