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Spektrum Firma 2 in 1 Brushless Cr (Spektrum XSEM1040B | SPMXSEM1040B)

Model: Spektrum XSEM1040B
Dist. #: SPMXSEM1040B   SKU: SPMXSEM1040B

Customer Reviews: Rated 4.0 stars 4 of 5 (1 Review)

Shipping: In Stock For Shipping
Store Pickup:

South Jordan, UT
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List Price:  $183.99
Price:  $179.99
You Save:  $4 (2%)

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Updated on Apr 17, 2026 06:11:14 PM

Firma 2 in 1 Brushless Cr...


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Key Advantages
2-in-1 ESC Motor Combination: Compact alternative|choice|alternative} for comprehensive scale builds where space is restricted
Advanced Sensored Motor Control: Great for sluggish speed driving and next level drag brake performance
IP-67 Waterproof Style: The IP-67 water resistant system supplies market leading water resistant and dustproof operation for carefree driving in mud, sand, snow and water





Multi-point Protection:

Over-current protection

Automatic LiPo low-voltage cutoff

Thermal protection

Failsafe protection





Features

Pro-level Drag Brake performance and adjustability

RPM/Throttle Matching made it possible for

FOC (Field-Oriented Control) geared up

Integrated 40-amp ESC (160amp burst)

2-3S LiPo/6-9 Cell NiMH input voltage variety

IP-67 rated water resistant system

Fully programmable with optional Spektrum ESC Programmer Box (not consisted of)

Established and developed by Spektrum™ engineers, in partnership with the market's leading ESC and Brushless Motor producer

Compact for simple installation in many|many|a lot of|the majority of} applications

All set to install — no soldering needed

Adjustable high-power BEC (6V or 7.4V)

Firmware updatable through the Spektrum ESC Programs Box

High heat resistant IC3 connectors, backwards compatible with EC3 connectors

Limited 1-year service warranty





The Ultimate Compact Spider Solution
The Spektrum Firma Sensored 2-in-1 System is particularly crafted to be used with 10th scale Crawlers and Scalers. Featuring innovative Field-orientated Control (FOC) and professional drag brake performance and torque control, all while being completely waterproof.

The compact 2-in-1 design grants builders the ability to reduce mess and elements, providing you the most room for scale accessories and customization. The integrated design makes the size similar to a 550 can size motor, making it a easy drop-in option for most 1/10 scale crawler, scaler and trailer models.

Available in a low speed 1400Kv alternative for severe sluggish speed and high angle of attack performance. And a high speed 2300Kv for outstanding control for trailers and rock bouncers.





Field-oriented Control

Field-oriented Control
The Spektrum Firma Sensored 2-in-1 System features a high-precision magnetic encoder and rotor position sensing unit that supplies outstanding 1 to 1 control feel when driving at any speed and at any angle. Perfectly matched for trail driving, rock crawling competitors and rock racing setups. This development in sensored motor control permits the ESC to match your throttle input to the motors RPM with unequaled accuracy.
 

Intelligent Speed and Torque Control

Intelligent Speed And Torque Control
The Spektrum Firma Sensored 2-in-1 System supplies a closed loop control, making sure that the esc maintains torque and RPM levels even as driving conditions alter. Offering extraordinary control when driving uphill or downhill and even when in wet or loose traction conditions. No matter the surface, the Spektrum Firma Spider system keeps you in complete control.
 





Maximum Power Efficiency Offers Longer Battery Life

Maximum Power Efficiency Provides Longer Battery Life
When driving with the Spektrum Firma Sensored 2-in-1 System, chauffeurs are much better geared up for the long tracks ahead. The Spektrum Firma Sensored 2-in-1 System only uses the power it needs to match your desired throttle output, providing substantially more efficient existing levels and very long battery life when compared to similar sensorless systems.
 

Pro-Level Drag Brake Modification

Pro-Level Drag Brake Adjustment
The Spektrum Firma Sensored 2-in-1 System features a substantial variety of drag brake adjustability, permitting chauffeurs to expertly tune their crawlers and scalers depending on their driven train and lorry weight. Enabling as much as 200% drag power, no matter the setup, the Spektrum Firma Sensored 2-in-1 System can keep your lorry parked at nearly any slope.
 





Water resistant

Waterproof
The all-weather, water resistant design of Spektrum™ Firma™ ESCs permits them to perform in nearly any surface under practically any conditions. Firma ESCs keep you going through dust, gravel, snow, and water.
 

High-adjustability Programs Options

High-adjustability Programming Options
Using the Spektrum ESC Programs Box (version V2 needed) , you can quickly alter settings on the trail to match driving conditions. An easy-to-use Smart Link USB Updating and PC Programmer app is also offered.
 



Specifications

Application: 1/10 Rock Spider

Car Cutoff: Yes

BEC Voltage: 6V/7.4V Adjustable, Constant Current 4A (Switch Mode)

Adapter Type: IC3

Forward: Yes

Input Voltage: 2-3S LiPo, 6-9 Cells NiMH

Maximum Burst Current: 160A

Maximum Constant Current: 40A

Motor Size: 550-Size

Motor Type: Brushless - Sensored

Number of Poles: 4

Outer Diameter: 1.46" (37 mm)

Overload Protection: Yes

Product Length: 2.28" (58 mm)

Product Weight: 201g (including wire plug)

Programmable: Yes

Reverse: Yes

RPM/Volt (Kv): 2300Kv

Shaft Diameter: 0.125" (3 mm)

Shaft Length: 0.63" (16 mm)

Waterproof: Yes

Frequently Bought Together

Spektrum Firma 2 in 1 Brushless Cr
+
Spektrum Smart ESC Programming Update Box: Avian and Firma
+
Traxxas Servo Digital High Torque 600 Bl Bb
This Item: Spektrum Firma 2 in 1 Brushless Cr
$179.99
Spektrum Smart ESC Programming Update Box: Avian and Firma
$37.99
Traxxas Servo Digital High Torque 600 Bl Bb
$159.95

Total Price: $377.93

Add All Three To Cart
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Rated 4 stars Best 1/10 crawler motor esc
By Scott S on March 14, 2023

I have really enjoyed this combo and it has tons of low end and tuning is awesome I have four of the 1400kv 2 in 1 Firma and it is a great choice crawling motor for sure thank you Vortex

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