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Firma 2-in-1 Brushless Crawler Motor/ESC: 2300Kv
Firma 2-in-1 Brushless Crawler Motor/ESC: 2300Kv
Firma 2-in-1 Brushless Crawler Motor/ESC: 2300Kv
Firma 2-in-1 Brushless Crawler Motor/ESC: 2300Kv
Firma 2-in-1 Brushless Crawler Motor/ESC: 2300Kv
Firma 2-in-1 Brushless Crawler Motor/ESC: 2300Kv
Firma 2-in-1 Brushless Crawler Motor/ESC: 2300Kv
Firma 2-in-1 Brushless Crawler Motor/ESC: 2300Kv
Firma 2-in-1 Brushless Crawler Motor/ESC: 2300Kv
Firma 2-in-1 Brushless Crawler Motor/ESC: 2300Kv
Firma 2-in-1 Brushless Crawler Motor/ESC: 2300Kv
Firma 2-in-1 Brushless Crawler Motor/ESC: 2300Kv

Firma 2-in-1 Brushless Crawler Motor/ESC: 2300Kv

Brand: Spektrum

Part No: SPMXSEM1040B

£170.99 RRP £179.99

Shadow Stock: Usually ships next day

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The Spektrum Firma 2-in-1 Brushless Crawler Motor/ESC: 2300Kv (SPMXSEM1040B) combines a sensored brushless motor with an integrated 40A ESC in a compact package that suits detailed 1/10 trail rigs and rock crawlers. With advanced Field‑Oriented Control (FOC), high‑precision magnetic encoder feedback and RPM/throttle matching, it delivers smooth low‑speed control, strong torque and next‑level drag brake performance.

Designed with an industry‑leading waterproof and dustproof construction, this 2–3S LiPo‑ready system provides dependable operation across mud, sand, snow and water. Closed‑loop speed and torque control maintain feel and holding power as terrain and gradients change, while efficient power delivery helps extend run time versus comparable sensorless setups. This 2300Kv variant offers responsive control that suits trailers and rock bouncer styles.

Key Benefits

  • 2‑in‑1 ESC/motor combo for space‑limited scale builds
  • Advanced sensored control for precise slow‑speed driving and powerful drag brake
  • Industry‑leading waterproof and dustproof design for all‑weather use
  • Multi‑point protection: over‑current, LiPo low‑voltage cutoff, thermal and failsafe

Features

  • Pro‑level drag brake performance and adjustability (up to 200% drag power)
  • RPM/Throttle Matching enabled
  • FOC (Field‑Oriented Control) equipped
  • Integrated 40‑amp ESC (160A burst)
  • 2–3S LiPo / 6–9 cell NiMH input range
  • Fully programmable with optional Spektrum ESC Programming Box (V2, not included)
  • Firmware updatable via Spektrum ESC Programming Box
  • Adjustable high‑power BEC (6V or 7.4V)
  • High heat‑resistant IC3 connectors (backwards compatible with EC3)
  • Compact form factor for easy installation
  • Developed and designed by Spektrum engineers in partnership with a leading ESC and motor manufacturer
  • Limited 1‑year warranty

Specifications

  • Application: 1/10 rock crawler
  • Motor Type/Size: Brushless, 550‑size, sensored (4‑pole)
  • RPM/Volt (Kv): 2300Kv
  • ESC Current: 40A continuous, 160A burst
  • Input Voltage: 2–3S LiPo, 6–9 cells NiMH
  • BEC: 6V/7.4V adjustable, 4A (switch mode)
  • Connector: IC3 (EC3 compatible)
  • Waterproof/Resistance: Industry‑leading waterproof design; Water‑Resistant: Yes
  • Protection: Over‑current, thermal, low‑voltage cutoff, failsafe
  • Forward/Reverse: Yes / Yes
  • Programmable/Firmware: Yes, via Spektrum ESC Programming Box (V2)
  • Dimensions/Weight: OD 37 mm, length 58 mm; weight 201 g (incl. wires)
  • Shaft: 3 mm diameter, 16 mm length

In The Box

  • Spektrum Firma Brushless Sensored 2‑in‑1 System 2300Kv
  • Product Manual

Needed to Complete

  • Product Manual
  • 2S or 3S LiPo battery with EC3 or IC3 connector
  • Spektrum transmitter
Key Benefits

2-in-1 ESC Motor Combo: Compact option for detailed scale builds where space is limited

Advanced Sensored Motor Control: Great for slow speed driving and next level drag brake performance

Industry Leading Waterproof Design: The Firma 2-in-1 Brushless Crawler Motor/ESC provides industry leading waterproof and dustproof operation for worry-free 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 enabled
  • FOC (Field-Oriented Control) equipped
  • Integrated 40-amp ESC (160amp burst)
  • 2-3S LiPo/6-9 Cell NiMH input voltage range
  • Industry Leading Waterproof Design
  • Fully programmable with optional Spektrum ESC Programmer Box (not included)
  • Developed and designed by Spektrum™ engineers, in partnership with the industry's leading ESC and Brushless Motor manufacturer
  • Compact for easy installation in most applications
  • Ready to install — no soldering required
  • Adjustable high-power BEC (6V or 7.4V)
  • Firmware updatable through the Spektrum ESC Programming Box
  • High heat resistant IC3 connectors, backwards compatible with EC3 connectors
  • Limited 1-year warranty
The Ultimate Compact Crawler Solution

The Spektrum Firma Sensored 2-in-1 System is specifically engineered to be used with 10th scale Crawlers and Scalers. Featuring advanced Field-orientated Control (FOC) and professional drag brake performance and torque control, all while being fully waterproof.

The compact 2-in-1 design grants builders the ability to reduce clutter and components, giving 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 option for extreme slow speed and high angle of attack performance. And a high speed 2300Kv for excellent control for trailers and rock bouncers.

Field-oriented Control

The Spektrum Firma Sensored 2-in-1 System features a high-precision magnetic encoder and rotor position sensor that provides excellent 1 to 1 control feel when driving at any speed and at any angle. Perfectly suited for trail driving, rock crawling competitions and rock racing setups. This advancement in sensored motor control allows the ESC to match your throttle input to the motors RPM with unmatched precision.

 

Intelligent Speed And Torque Control

The Spektrum Firma Sensored 2-in-1 System provides a closed loop control, ensuring that the esc maintains torque and RPM levels even as driving conditions change. Giving unprecedented control when driving uphill or downhill and even when in wet or loose traction conditions. No matter the terrain, the Spektrum Firma Crawler system keeps you in complete control.

 

Maximum Power Efficiency Provides Longer Battery Life

When driving with the Spektrum Firma Sensored 2-in-1 System, drivers are better equipped for the long trails 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 current levels and extremely long battery life when compared with similar sensorless systems.

 

Pro-Level Drag Brake Adjustment

The Spektrum Firma Sensored 2-in-1 System features a huge range of drag brake adjustability, allowing for drivers to expertly tune their crawlers and scalers depending on their driven train and vehicle weight. Allowing up to 200% drag power, no matter the setup, the Spektrum Firma Sensored 2-in-1 System can keep your vehicle parked at nearly any incline.

 

Waterproof

The all-weather, waterproof design of Spektrum™ Firma™ ESCs allows them to perform in nearly any terrain under almost any conditions. Firma ESCs keep you going through dust, gravel, snow, and water.

 

High-adjustability Programming Options

Using the Spektrum ESC Programming Box (version V2 required) , you can easily change settings on the trail to suit driving conditions. An easy-to-use Smart Link USB Updating and PC Programmer app is also available.

 

Firma 2-in-1 Brushless Crawler Motor/ESC: 2300Kv Specfications:

  • Outer Diameter: 1.46" (37 mm)
  • Forward: Yes
  • Reverse: Yes
  • Application: 1/10 Rock Crawler
  • Auto Cutoff: Yes
  • Number of Poles: 4
  • Overload Protection: Yes
  • Product Weight: 201g (including wire plug)
  • Shaft Diameter: 0.125" (3 mm)
  • Maximum Burst Current: 160A
  • Maximum Continuous Current: 40A
  • Motor Type: Brushless
  • Programmable: Yes
  • Connector Type: IC3
  • Motor Size: 550-Size
  • Product Length: 2.28" (58 mm)
  • BEC Voltage: 6V/7.4V Adjustable, Continuous Current 4A (Switch Mode)
  • Input Voltage: 2-3S LiPo, 6-9 Cells NiMH
  • Product Application: Crawling, Surface
  • RPM/Volt (Kv): 2300Kv
  • Sensored: Yes
  • Shaft Length: 0.63" (16 mm)
  • Water-Resistant: Yes

In The Box
  • (1) Spektrum Firma Brushless Sensored 2-in-1 System 2300Kv
  • (1) Product Manual
Needed to Complete
  • (1) Product Manual
  • (1) 2S or 3S LiPo Battery with EC3 or IC3 Connector
  • (1) Spektrum Transmitter


Key Info:
  • Brand: Spektrum
  • Part No: SPMXSEM1040B
  • Barcode: 605482769089
  • Fitment: Option Part
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