Delivery Included
1 Year Warranty
Spektrum Firma 130A ESC / 2250Kv Motor Combo Overview
The Spektrum Firma Sensored ESC System is a combo that includes a Sensored 2250kv Motor and the Firma 130 Amp Sensored ESC, providing a perfect upgrade for 1/8th scale truggies.
Like every component in the SpektrumT Smart ecosystem, FirmaT Smart ESCs combine "plug-and-play" simplicity with the ability to communicate with other Smart electronics, creating the best-performing RC system for your vehicle.
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.
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.
Firma ESCs gather the data and send it to your transmitter in real time instead of storing it for an after-run study. You can 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!
This ESC comes bundled with a Spektrum Firma 2250Kv Brushless Motor, which is capable of handling everything this ESC can put out and is perfect for getting you driving with Spektrum Smart technology.
Spektrum Firma 130A ESC / 2250Kv Motor Combo Features
- Smart all-in-one telemetry
- Fast, powerful 32-bit ARM M4 processor
- 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 SpektrumT engineers in partnership with the industry's leading ESC manufacturer
- Comes bundled with Spektrum Firma 2250Kv Brushless Motor
- 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 ICT connectors, backward compatible with ECT connectors
- Limited 1-year warranty
Product Description of Spektrum M-SPMXSEMC21 Firma 130A ESC and 2250Kv sensored motor combo
The Spektrum M-SPMXSEMC21 Firma 130A ESC and 2250Kv sensored motor combo for 1/8 truggies is engineered for high-performance racing platforms that demand precision throttle control, Smart telemetry integration, and rugged reliability. Designed specifically for 4S LiPo setups, this sensored brushless system pairs a 4274-class 2250Kv motor with Spektrum’s advanced Smart ESC architecture, delivering seamless power delivery and real-time data feedback. The motor’s rotor position sensor and magnetic encoder enable unmatched throttle fidelity, translating driver input into smooth, responsive acceleration across all terrain types. With one-wire telemetry support and compatibility with IC5-equipped Smart batteries, the combo offers plug-and-play simplicity and elite control for competitive truggy builds. Whether you're upgrading an 8IGHT-XT/XTE or building a new 1/8 scale platform, the Spektrum M-SPMXSEMC21 combo is purpose-built to elevate drivability and system awareness.
Key features of the Spektrum M-SPMXSEMC21 combo
- Rotor position sensor – enables precise motor timing and smooth throttle transitions across all speeds
- One-wire Smart telemetry – delivers real-time system data without additional sensors or modules
- 32-bit ARM M4 processor – enhances signal resolution and motor output accuracy for refined control
- Multiple programming options – supports button setup, USB interface, and Smart ESC Programming Box
- High-current IC5 battery lead – enables Smart LiPo integration and secure power delivery
- Compact 4274 motor size – ensures drop-in compatibility with 1/8 scale truggy platforms
How does the rotor position sensor improve throttle fidelity?
The Spektrum M-SPMXSEMC21 with rotor position sensor and one-wire telemetry features a high-precision magnetic encoder that tracks rotor position with exceptional accuracy. This allows the ESC to match throttle input to motor RPM with one-to-one responsiveness, eliminating cogging and ensuring smooth launches. The result is consistent acceleration and braking performance, especially critical in competitive truggy racing where terrain variability demands precise modulation. This sensor-driven feedback loop transforms driver input into fluid motion, enhancing control and confidence during high-speed maneuvers.
What makes Smart telemetry integration a game-changer?
The Spektrum M-SPMXSEMC21 Smart ESC with telemetry and 2250Kv motor for 4S LiPo setups incorporates a one-wire telemetry system that transmits RPM, voltage, temperature, and battery metrics directly to compatible Spektrum transmitters. When paired with a Smart LiPo battery, users gain access to cycle count, individual cell voltage, and battery percentage—all displayed in real time. This integration eliminates the need for external modules or sensors, streamlining setup while enhancing system awareness. Drivers can monitor performance mid-run and make adjustments on the fly, ensuring optimal operation and preventing thermal or voltage-related issues.
Why is the 32-bit ARM M4 processor essential for high-resolution control?
At the core of the Spektrum Firma combo for precision throttle control and real-time data feedback is a 32-bit ARM M4 processor that governs signal input and motor output with exceptional precision. This processor enables higher resolution in throttle mapping, braking curves, and timing adjustments, resulting in a more refined driving experience. The increased processing power ensures that the ESC can respond to rapid changes in input without lag, maintaining consistent performance even under high-load conditions. For 1/8 scale truggies, this translates into tighter handling, smoother launches, and more predictable control across varied terrain.
How does the IC5 battery lead support Smart integration?
The Spektrum M-SPMXSEMC21 sensored brushless system with IC5 battery lead and Smart tech includes a user-installable IC5 connector designed for high-current delivery and Smart telemetry compatibility. This connector offers superior heat resistance and a more secure fit compared to legacy EC5 formats. When used with a Spektrum Smart LiPo battery, the IC5 lead enables full telemetry functionality, including battery health metrics and real-time voltage monitoring. The solder tab design also allows for clean wiring and robust electrical contact, minimizing resistance and improving reliability during high-demand operation.
What programming options are available for performance tuning?
The Spektrum M-SPMXSEMC21 Firma 130A ESC and 2250Kv sensored motor combo for 1/8 truggies supports multiple programming methods to suit different user preferences and track conditions. Basic adjustments can be made using onboard button programming, while more advanced configurations are accessible via the Smart ESC Programming Box or the SmartLink USB interface. Users can modify throttle curves, braking strength, timing, and voltage cutoff parameters to match terrain and driving style. Additionally, forward programming is supported when paired with compatible Spektrum transmitters, allowing settings to be adjusted directly from the radio. This flexibility ensures that drivers can fine-tune their setup without disassembling the vehicle or interrupting their session.
Is the Spektrum M-SPMXSEMC21 combo optimized for 1/8 scale truggy platforms?
The Spektrum 2250Kv motor with solder tabs and compatibility with 8IGHT-XT/XTE platforms is specifically designed for 1/8 scale truggies that require torque-rich acceleration, thermal stability, and intelligent control. Its compact 4274 motor size ensures drop-in compatibility with popular platforms like the 8IGHT-XT/XTE, while the ESC’s Smart telemetry capabilities provide actionable data during operation. The rugged ESC housing and cooling system maintain thermal efficiency, and the sensored motor design ensures smooth power delivery. For racers seeking the best Spektrum ESC and motor combo for high-resolution control and telemetry access, this system delivers elite performance through integrated design and simplified connectivity.
For RC enthusiasts upgrading their 1/8 scale truggy with a sensored brushless system that offers Smart telemetry, precision control, and flexible programming, the Spektrum M-SPMXSEMC21 Firma 130A ESC and 2250Kv sensored motor combo for 1/8 truggies stands out as a complete solution. Buy Spektrum M-SPMXSEMC21 combo for 1/8 truggy upgrades with Smart ESC integration.
Technical Specifications of Spektrum M-SPMXSEMC21 Firma 130A ESC and 2250Kv sensored motor combo
Brand, Model and Product Type
- Brand: Spektrum
- Model: M-SPMXSEMC21
- Product Type: Spektrum M-SPMXSEMC21 Firma 130A ESC and 2250Kv sensored motor combo for 1/8 truggies, Spektrum M-SPMXSEMC21 Smart ESC with telemetry and 2250Kv motor for 4S LiPo setups, Spektrum M-SPMXSEMC21 sensored brushless system with IC5 battery lead and Smart tech, Spektrum M-SPMXSEMC21 with rotor position sensor and one-wire telemetry, Spektrum Firma combo for precision throttle control and real-time data feedback
Dimensions
- Motor Size: 4274 – optimized for 1/8 scale truggy platforms
- Motor Shaft Diameter: 5 mm – supports standard drivetrain configurations
- Motor Shaft Length: 19 mm – ensures secure gear mesh and alignment
Electrical Specifications
- Kv Rating: 2250Kv – delivers high-RPM output and responsive throttle control
- Input Voltage: 3S–4S LiPo – optimized for 1/8 scale truggy racing
- Max Continuous Current: 130A – supports sustained high-load operation
- Max Burst Current: 760A – enables peak acceleration and power delivery
- BEC Voltage: Selectable 6V or 7.4V – supports high-torque servos and accessories
- BEC Continuous Current: 5A – ensures stable power for receiver and peripherals
Mechanical Specifications
- ESC Type: Sensored Brushless – enables smooth startup and accurate motor timing
- Motor Type: Brushless Sensored – includes rotor position sensor and magnetic encoder
- Number of Poles: 4 – supports torque-rich propulsion and smooth acceleration
- Bearings: Ball bearing supported – reduces friction and enhances durability
- Cooling System: ESC cooling fan and aluminum heat sink – maintains thermal stability
- ESC Case: Rugged plastic with mounting tabs – compact and durable for off-road use
Smart Technology & Telemetry
- Telemetry: One-wire Smart telemetry – transmits RPM, voltage, temperature, and battery data in real time
- Smart Battery Compatibility: IC5-equipped Smart LiPo – enables cycle count, cell voltage, and battery percentage display
Connectors & Compatibility
- Motor Output Lead: Solder tabs – allows secure and customizable wiring
- Battery Connector Type: IC5 (user installable) – compatible with Spektrum Smart batteries
- Application: 1/8 scale truggies – optimized for platforms like 8IGHT-XT/XTE
Programming & Protection Features
- Programming Options: Button programming, Smart ESC Programming Box, SmartLink USB, and forward programming via compatible transmitters
- Protection Features: Over-current, thermal, low-voltage cutoff, and failsafe protection
- Programmable: Yes – adjust throttle curves, braking, timing, and voltage cutoff
What’s in the Box
- (1) Spektrum Firma 130A Black Edition Sensored Brushless Smart ESC
- (1) Spektrum Firma 4274 2250Kv 4-Pole Sensored Brushless Motor
- (1) Product Manual
What You Require
- (1) Spektrum Surface Receiver
- (1) Spektrum Smart Technology LiPo Battery
- (1) Spektrum Transmitter
Finance Options
Click to see Novuna Finance Information
Novuna Personal Finance Available on this product
| DEPOSIT |
MONTHS |
APR |
MONTHLY PAYMENTS |
TOTAL AMOUNT PAYABLE |
| 24 Month Credit |
| £35.00 |
24 |
19.9% |
24 x £15.77 |
£413.48 |
| 36 Months Credit |
| £35.00 |
36 |
19.9% |
36 x £11.43 |
£446.48 |
| 48 Months Credit |
| £35.00 |
48 |
19.9% |
48 x £9.30 |
£481.40 |
| Buy Now Pay Later 48 months (6 months Deferred) |
| £35.00 |
48 |
24.9% |
48 x £10.97 |
£561.56 |
| Buy Now Pay Later 48 months (10 months Deferred) |
| £35.00 |
48 |
24.9% |
48 x £11.60 |
£591.80 |
| Buy Now Pay Later 48 months (12 months Deferred) |
| £35.00 |
48 |
24.9% |
48 x £12.26 |
£623.48 |
We want to make sure your delivery goes smoothly, so here are some important details about our service:
- For orders above £120, we offer delivery to most mainland UK addresses. For orders under £120, we can still deliver to Northern Ireland and the outlying isles, as long as the item can be sent by Royal Mail, weighs less than 30kg, and fits within 61cm × 46cm × 46cm. Some highland and remote areas may carry an extra delivery charge as couriers often apply surcharges in these locations. If you live in one of these areas, feel free to contact us before ordering so we can confirm the delivery options and costs for you.
- Most of our products include delivery in the price. If your order is under £90, a small delivery fee will apply but do not worry this will always be clearly shown at checkout before you complete your purchase.
- Depending on what you choose at checkout, your order will usually be delivered either the next working day or within 2 working days. For next day delivery please place your order before 2:00pm. Orders are dispatched Monday to Friday only. Some items may take a little longer and if that is the case we will always show the expected delivery time on the product page.
- If your order includes items with different dispatch times we will normally wait and send everything together once all items are in stock. If one of the items is going to take a while we will give you the choice either wait for everything to arrive or let us send the available items now and deliver the rest later. It is up to you.
- We use trusted delivery partners to make sure your order gets to you safely and on time. We use DPD for next working day deliveries and Royal Mail for the 2 day option.
- As soon as your order is on its way we will send you a tracking number by email. If you provide your mobile number at checkout we will also send delivery updates straight to your phone so you can keep an eye on progress.
- If a product is marked as "Dispatched within 3 working days" delivery usually takes around 3 to 5 working days from when your order is placed.
- For customers in Inverness and other parts of the Scottish Highlands deliveries can take up to 2 working days even if you select next day delivery as couriers do not currently offer a guaranteed next day service to those areas.
