Delivery Included
1 Year Warranty
The Spektrum M-SPMXSM2500 Firma 1100Kv brushless motor for 1/5 scale 3S–8S RC vehicles is engineered to meet the demands of high-powered RC enthusiasts who require uncompromising torque, sustained acceleration, and drivetrain resilience across large-scale platforms. Designed specifically for Arrma Roller kits and 1/5 scale monster trucks, this sensorless inrunner motor delivers a commanding 7900W output, making it a formidable choice for speed builds and bashing setups that operate on high-voltage LiPo configurations. With a 4-pole rotor architecture and CNC-machined aluminum housing, the Spektrum M-SPMXSM2500 motor combines mechanical precision with thermal stability, ensuring consistent performance under extreme load. The inclusion of a hardened steel 8mm Safe-D shaft with a C-clip locking point further reinforces the motor’s ability to maintain gear alignment and prevent slippage during aggressive launches and terrain transitions. Every component of the Spektrum M-SPMXSM2500 motor is optimized for durability, efficiency, and ease of installation, making it a strategic upgrade for serious RC builders.
Key features of the Spektrum M-SPMXSM2500
- High-output power system – delivers 7900W for sustained torque and top-end speed
- Safe-D shaft with C-clip locking – prevents pinion gear slip under high-load conditions
- Precision ball bearings – support smooth rotation and reduce drivetrain wear
- High-efficiency copper windings – maximize conductivity and thermal control
- Sensorless inrunner design – simplifies setup and enhances reliability
- 6.5mm bullet connectors – enable secure, high-current connections with minimal resistance
- CNC-machined aluminum housing – improves heat dissipation and structural integrity
Why is the 7900W output critical for 1/5 scale monster trucks?
The Spektrum M-SPMXSM2500 with 7900W output and low-cog rotor design is built to deliver extreme power across a wide voltage range, supporting 3S to 8S LiPo configurations. This level of output is essential for 1/5 scale monster trucks and Arrma Roller kits that require sustained torque and high-RPM acceleration to navigate rugged terrain, execute jumps, and maintain speed during competitive runs. The motor’s ability to handle a continuous current of 95A ensures that performance remains consistent even under prolonged stress, making it a reliable choice for users who push their vehicles to the limit. Whether you're racing across open tracks or bashing through uneven surfaces, the Spektrum M-SPMXSM2500 motor provides the raw power needed to dominate large-scale RC environments.
How does the Safe-D shaft enhance drivetrain reliability?
The Spektrum M-SPMXSM2500 4-pole motor with CNC aluminum housing and 8mm Safe-D shaft features a hardened steel output shaft designed to withstand the mechanical demands of high-torque applications. The 8mm diameter provides a robust interface for heavy-duty pinions and gear systems, while the integrated C-clip locking point prevents slippage during high-load operation. This Safe-D shaft design is particularly valuable for users who engage in aggressive driving, as it ensures that gear alignment remains intact even during sudden acceleration or terrain impact. By eliminating the risk of pinion gear movement, the motor preserves drivetrain integrity and reduces the likelihood of mechanical failure, allowing users to focus on performance without compromise.
What role do the precision ball bearings play in performance?
The Spektrum Firma motor with precision ball bearings and high-efficiency windings incorporates high-quality bearings that reduce rotational friction and support smooth, vibration-free operation. These bearings are essential for maintaining consistent motor performance, especially during extended sessions where heat and mechanical stress can degrade lesser components. By minimizing resistance and wear, the precision bearings contribute to the motor’s overall efficiency and longevity. This feature is particularly beneficial for users who demand reliability across varied terrain and driving conditions, as it ensures that the motor continues to perform optimally without requiring frequent maintenance or replacement.
Why is the sensorless inrunner design ideal for large-scale builds?
The Spektrum M-SPMXSM2500 sensorless inrunner motor with 6.5mm bullet connectors utilizes a sensorless architecture that simplifies installation and reduces mechanical complexity. Unlike sensored motors, which require additional wiring and calibration, the sensorless design offers plug-and-play convenience without sacrificing performance. This is especially advantageous for large-scale builds where space and accessibility may be limited. The inrunner configuration further enhances efficiency by concentrating the rotor within the stator, resulting in a compact form factor that fits seamlessly into 1/5 scale chassis. Combined with the preinstalled 6.5mm gold-plated bullet connectors, the motor supports quick setup and secure electrical connections, allowing users to get up and running with minimal effort.
How does the CNC aluminum housing improve thermal management?
The Spektrum 1100Kv motor for Arrma Roller kits and large-scale monster trucks features a CNC-machined aluminum housing that plays a critical role in heat dissipation and structural reinforcement. The precision-machined casing ensures that internal components remain protected from vibration and impact, while the aluminum material conducts heat away from the motor core during operation. This passive cooling system helps maintain consistent internal temperatures, reducing the risk of thermal shutdown or performance degradation. For users operating in high-voltage environments or under sustained load, the housing provides a reliable thermal buffer that supports long-term motor health and consistent output.
What makes the Spektrum M-SPMXSM2500 motor a strategic upgrade?
The Spektrum M-SPMXSM2500 Firma 1100Kv brushless motor for 1/5 scale 3S–8S RC vehicles is more than just a power unit—it’s a comprehensive solution for builders seeking durability, efficiency, and ease of integration. Every component, from the high-purity copper windings to the Safe-D shaft and CNC housing, is engineered to deliver value across performance, reliability, and installation. The motor’s compatibility with the Spektrum Firma 160A Smart ESC ensures optimal pairing and system coherence, while its 86% efficiency rating supports energy conservation and thermal stability. For users looking to maximize drivetrain durability and achieve high-RPM acceleration, this motor stands out as one of the best Spektrum upgrades available for large-scale platforms.
For RC enthusiasts building or upgrading 1/5 scale monster trucks and Arrma Roller kits, the Spektrum M-SPMXSM2500 Firma 1100Kv brushless motor for 1/5 scale 3S–8S RC vehicles delivers unmatched torque, installation simplicity, and long-term reliability. Buy Spektrum M-SPMXSM2500 motor for torque-heavy 8S bashing and speed builds.
Product Description of Spektrum M-SPMXSM2500 Firma 1100Kv brushless motor
The Spektrum M-SPMXSM2500 Firma 1100Kv brushless motor for 1/5 scale 3S–8S RC vehicles is engineered to meet the demands of high-powered RC enthusiasts who require uncompromising torque, sustained acceleration, and drivetrain resilience across large-scale platforms. Designed specifically for Arrma Roller kits and 1/5 scale monster trucks, this sensorless inrunner motor delivers a commanding 7900W output, making it a formidable choice for speed builds and bashing setups that operate on high-voltage LiPo configurations. With a 4-pole rotor architecture and CNC-machined aluminum housing, the Spektrum M-SPMXSM2500 motor combines mechanical precision with thermal stability, ensuring consistent performance under extreme load. The inclusion of a hardened steel 8mm Safe-D shaft with a C-clip locking point further reinforces the motor’s ability to maintain gear alignment and prevent slippage during aggressive launches and terrain transitions. Every component of the Spektrum M-SPMXSM2500 motor is optimized for durability, efficiency, and ease of installation, making it a strategic upgrade for serious RC builders.
Key features of the Spektrum M-SPMXSM2500
- High-output power system – delivers 7900W for sustained torque and top-end speed
- Safe-D shaft with C-clip locking – prevents pinion gear slip under high-load conditions
- Precision ball bearings – support smooth rotation and reduce drivetrain wear
- High-efficiency copper windings – maximize conductivity and thermal control
- Sensorless inrunner design – simplifies setup and enhances reliability
- 6.5mm bullet connectors – enable secure, high-current connections with minimal resistance
- CNC-machined aluminum housing – improves heat dissipation and structural integrity
Why is the 7900W output critical for 1/5 scale monster trucks?
The Spektrum M-SPMXSM2500 with 7900W output and low-cog rotor design is built to deliver extreme power across a wide voltage range, supporting 3S to 8S LiPo configurations. This level of output is essential for 1/5 scale monster trucks and Arrma Roller kits that require sustained torque and high-RPM acceleration to navigate rugged terrain, execute jumps, and maintain speed during competitive runs. The motor’s ability to handle a continuous current of 95A ensures that performance remains consistent even under prolonged stress, making it a reliable choice for users who push their vehicles to the limit. Whether you're racing across open tracks or bashing through uneven surfaces, the Spektrum M-SPMXSM2500 motor provides the raw power needed to dominate large-scale RC environments.
How does the Safe-D shaft enhance drivetrain reliability?
The Spektrum M-SPMXSM2500 4-pole motor with CNC aluminum housing and 8mm Safe-D shaft features a hardened steel output shaft designed to withstand the mechanical demands of high-torque applications. The 8mm diameter provides a robust interface for heavy-duty pinions and gear systems, while the integrated C-clip locking point prevents slippage during high-load operation. This Safe-D shaft design is particularly valuable for users who engage in aggressive driving, as it ensures that gear alignment remains intact even during sudden acceleration or terrain impact. By eliminating the risk of pinion gear movement, the motor preserves drivetrain integrity and reduces the likelihood of mechanical failure, allowing users to focus on performance without compromise.
What role do the precision ball bearings play in performance?
The Spektrum Firma motor with precision ball bearings and high-efficiency windings incorporates high-quality bearings that reduce rotational friction and support smooth, vibration-free operation. These bearings are essential for maintaining consistent motor performance, especially during extended sessions where heat and mechanical stress can degrade lesser components. By minimizing resistance and wear, the precision bearings contribute to the motor’s overall efficiency and longevity. This feature is particularly beneficial for users who demand reliability across varied terrain and driving conditions, as it ensures that the motor continues to perform optimally without requiring frequent maintenance or replacement.
Why is the sensorless inrunner design ideal for large-scale builds?
The Spektrum M-SPMXSM2500 sensorless inrunner motor with 6.5mm bullet connectors utilizes a sensorless architecture that simplifies installation and reduces mechanical complexity. Unlike sensored motors, which require additional wiring and calibration, the sensorless design offers plug-and-play convenience without sacrificing performance. This is especially advantageous for large-scale builds where space and accessibility may be limited. The inrunner configuration further enhances efficiency by concentrating the rotor within the stator, resulting in a compact form factor that fits seamlessly into 1/5 scale chassis. Combined with the preinstalled 6.5mm gold-plated bullet connectors, the motor supports quick setup and secure electrical connections, allowing users to get up and running with minimal effort.
How does the CNC aluminum housing improve thermal management?
The Spektrum 1100Kv motor for Arrma Roller kits and large-scale monster trucks features a CNC-machined aluminum housing that plays a critical role in heat dissipation and structural reinforcement. The precision-machined casing ensures that internal components remain protected from vibration and impact, while the aluminum material conducts heat away from the motor core during operation. This passive cooling system helps maintain consistent internal temperatures, reducing the risk of thermal shutdown or performance degradation. For users operating in high-voltage environments or under sustained load, the housing provides a reliable thermal buffer that supports long-term motor health and consistent output.
What makes the Spektrum M-SPMXSM2500 motor a strategic upgrade?
The Spektrum M-SPMXSM2500 Firma 1100Kv brushless motor for 1/5 scale 3S–8S RC vehicles is more than just a power unit—it’s a comprehensive solution for builders seeking durability, efficiency, and ease of integration. Every component, from the high-purity copper windings to the Safe-D shaft and CNC housing, is engineered to deliver value across performance, reliability, and installation. The motor’s compatibility with the Spektrum Firma 160A Smart ESC ensures optimal pairing and system coherence, while its 86% efficiency rating supports energy conservation and thermal stability. For users looking to maximize drivetrain durability and achieve high-RPM acceleration, this motor stands out as one of the best Spektrum upgrades available for large-scale platforms.
For RC enthusiasts building or upgrading 1/5 scale monster trucks and Arrma Roller kits, the Spektrum M-SPMXSM2500 Firma 1100Kv brushless motor for 1/5 scale 3S–8S RC vehicles delivers unmatched torque, installation simplicity, and long-term reliability. Buy Spektrum M-SPMXSM2500 motor for torque-heavy 8S bashing and speed builds.
Technical Specifications of Spektrum M-SPMXSM2500 Firma 1100Kv brushless motor
Brand, Model and Product Type
- Brand: Spektrum
- Model: M-SPMXSM2500
- Product Type: Spektrum M-SPMXSM2500 Firma 1100Kv brushless motor for 1/5 scale 3S–8S RC vehicles, Spektrum M-SPMXSM2500 sensorless inrunner motor with 6.5mm bullet connectors, Spektrum M-SPMXSM2500 4-pole motor with CNC aluminum housing and 8mm Safe-D shaft, Spektrum M-SPMXSM2500 with 7900W output and low-cog rotor design, Spektrum Firma motor with precision ball bearings and high-efficiency windings
Dimensions & Weight
- Motor Length: 8.6 cm – supports secure mounting in 1/5 scale chassis
- Motor Diameter: 5.6 cm – compatible with 5687-class motor bays
- Shaft Diameter: 8 mm – hardened alloy steel shaft for drivetrain stability
- Shaft Length: 2.2 cm – ensures secure gear engagement and alignment
- Product Weight: 893 g – robust construction for torque-heavy applications
Performance & Electrical Specifications
- Kv Rating: 1100Kv – optimized for high-RPM acceleration and torque delivery
- Input Voltage Range: 11.1V–29.6V (3S–8S LiPo) – supports high-voltage brushless setups
- Output Power: 7900W – delivers high-efficiency performance for large-scale builds
- Maximum Continuous Current: 95A – enables sustained high-load operation
- Efficiency: 86% – minimizes energy loss and supports thermal stability
- Motor Type: Brushless Sensorless – simplifies setup and reduces mechanical complexity
- Motor Design: Inrunner – compact and efficient for enclosed motor compartments
- Number of Poles: 4 – supports smooth rotation and torque delivery
- Resistance: 0.0041 ohms – supports efficient current flow and thermal control
Construction & Materials
- Rotor Design: Low-cog 4-pole – enhances throttle response and startup smoothness
- Housing Material: CNC-machined aluminum – improves heat dissipation and structural durability
- Shaft Material: Hardened alloy steel – resists wear and ensures long-term mechanical integrity
- Cooling System: Passive – maintains consistent operating temperatures without external fans
- Windings: Insulated high-purity copper – maximizes conductivity and thermal efficiency
- Safe-D Shaft: C-clip locking point – prevents pinion gear slip during high-torque operation
Connectivity & Compatibility
- Connector Type: 6.5mm gold-plated bullet connectors – preinstalled for secure high-current connections
- Wire Length: 190 mm – supports flexible routing in large-scale builds
- Application: Designed for Arrma Roller kits and 1/5 scale monster trucks – ideal for 3S–8S LiPo setups
- Recommended ESC: Firma 160A Smart ESC – ensures optimal pairing and performance
What’s in the Box
- (1) Firma 1100Kv 4-Pole Brushless Motor
What You Require
- Electronic Speed Control such as the Spektrum Firma 160A Smart ESC
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.
