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The Spektrum M-SPMXSM2400 Firma 750Kv brushless motor for 1/6 scale 3S–8S RC vehicles is built for serious power delivery, drivetrain resilience, and smooth throttle response across demanding terrain. Designed for buggies, truggies, and monster trucks, this sensorless inrunner motor delivers a robust 3950W output, making it ideal for torque-heavy 6S–8S bashing and racing setups. Its 4-pole, 8-magnet rotor design minimizes cogging and ensures consistent acceleration, while the CNC-machined aluminum housing enhances heat dissipation and structural integrity. The hardened alloy steel 8mm shaft provides secure gear engagement and long-term durability, even under extreme load. Preinstalled 6.5mm gold-plated bullet connectors simplify installation and ensure reliable high-current connectivity. Whether you're building a high-voltage basher or a precision-tuned racer, the Spektrum M-SPMXSM2400 motor offers the performance and reliability needed to dominate 1/6 scale terrain.
Key features of the Spektrum M-SPMXSM2400 motor
- 4-pole rotor – delivers torque-rich propulsion and consistent throttle response for large-scale platforms
- 3950W output – supports aggressive acceleration and sustained performance under heavy load
- Low-cog 8-magnet rotor – minimizes startup hesitation and improves throttle fidelity
- CNC aluminum housing – enhances thermal stability and protects internal components from vibration and impact
- 8mm hardened alloy steel shaft – ensures secure gear engagement and long-term drivetrain integrity
- Precision ball bearings – reduce friction and support smooth, vibration-free rotation
How does the rotor design improve throttle response?
The Spektrum M-SPMXSM2400 with low-cog 8-magnet rotor and 3950W output features a 4-pole configuration that enhances torque delivery and minimizes cogging during startup. This design ensures smooth, predictable throttle response across all RPM ranges, making it ideal for high-speed launches and technical terrain. Whether you're navigating jumps or pushing for top speed, the rotor architecture supports fluid control and consistent propulsion.
Why is the 8mm shaft critical for drivetrain durability?
The Spektrum M-SPMXSM2400 4-pole motor with CNC aluminum housing and 8mm steel shaft includes a hardened alloy steel output shaft designed to handle the mechanical demands of 1/6 scale drivetrains. Its 8mm diameter provides a secure interface for heavy-duty pinions and gear systems, reducing flex and wear under load. This shaft specification ensures long-term mechanical integrity and reliable power transfer, even during aggressive driving or high-torque launches.
What installation advantages do the 6.5mm bullet connectors offer?
The Spektrum M-SPMXSM2400 sensorless inrunner motor with 6.5mm bullet connectors comes preinstalled with gold-plated terminals that simplify wiring and ensure secure high-current connections. These connectors are designed for durability and conductivity, reducing resistance and heat buildup during operation. Their robust size supports clean installations in large-scale motor bays, making setup fast and reliable for high-voltage builds.
For RC enthusiasts seeking a high-performance upgrade for their 1/6 scale vehicle, the Spektrum M-SPMXSM2400 Firma 750Kv brushless motor for 1/6 scale 3S–8S RC vehicles delivers unmatched torque, precision, and installation simplicity. Buy Spektrum M-SPMXSM2400 motor for torque-heavy 6S–8S bashing and racing setups.
Product Description of Spektrum M-SPMXSM2400 Firma 750Kv brushless motor
The Spektrum M-SPMXSM2400 Firma 750Kv brushless motor for 1/6 scale 3S–8S RC vehicles is built for serious power delivery, drivetrain resilience, and smooth throttle response across demanding terrain. Designed for buggies, truggies, and monster trucks, this sensorless inrunner motor delivers a robust 3950W output, making it ideal for torque-heavy 6S–8S bashing and racing setups. Its 4-pole, 8-magnet rotor design minimizes cogging and ensures consistent acceleration, while the CNC-machined aluminum housing enhances heat dissipation and structural integrity. The hardened alloy steel 8mm shaft provides secure gear engagement and long-term durability, even under extreme load. Preinstalled 6.5mm gold-plated bullet connectors simplify installation and ensure reliable high-current connectivity. Whether you're building a high-voltage basher or a precision-tuned racer, the Spektrum M-SPMXSM2400 motor offers the performance and reliability needed to dominate 1/6 scale terrain.
Key features of the Spektrum M-SPMXSM2400 motor
- 4-pole rotor – delivers torque-rich propulsion and consistent throttle response for large-scale platforms
- 3950W output – supports aggressive acceleration and sustained performance under heavy load
- Low-cog 8-magnet rotor – minimizes startup hesitation and improves throttle fidelity
- CNC aluminum housing – enhances thermal stability and protects internal components from vibration and impact
- 8mm hardened alloy steel shaft – ensures secure gear engagement and long-term drivetrain integrity
- Precision ball bearings – reduce friction and support smooth, vibration-free rotation
How does the rotor design improve throttle response?
The Spektrum M-SPMXSM2400 with low-cog 8-magnet rotor and 3950W output features a 4-pole configuration that enhances torque delivery and minimizes cogging during startup. This design ensures smooth, predictable throttle response across all RPM ranges, making it ideal for high-speed launches and technical terrain. Whether you're navigating jumps or pushing for top speed, the rotor architecture supports fluid control and consistent propulsion.
Why is the 8mm shaft critical for drivetrain durability?
The Spektrum M-SPMXSM2400 4-pole motor with CNC aluminum housing and 8mm steel shaft includes a hardened alloy steel output shaft designed to handle the mechanical demands of 1/6 scale drivetrains. Its 8mm diameter provides a secure interface for heavy-duty pinions and gear systems, reducing flex and wear under load. This shaft specification ensures long-term mechanical integrity and reliable power transfer, even during aggressive driving or high-torque launches.
What installation advantages do the 6.5mm bullet connectors offer?
The Spektrum M-SPMXSM2400 sensorless inrunner motor with 6.5mm bullet connectors comes preinstalled with gold-plated terminals that simplify wiring and ensure secure high-current connections. These connectors are designed for durability and conductivity, reducing resistance and heat buildup during operation. Their robust size supports clean installations in large-scale motor bays, making setup fast and reliable for high-voltage builds.
For RC enthusiasts seeking a high-performance upgrade for their 1/6 scale vehicle, the Spektrum M-SPMXSM2400 Firma 750Kv brushless motor for 1/6 scale 3S–8S RC vehicles delivers unmatched torque, precision, and installation simplicity. Buy Spektrum M-SPMXSM2400 motor for torque-heavy 6S–8S bashing and racing setups.
Technical Specifications of Spektrum M-SPMXSM2400 Firma 750Kv brushless motor
Brand, Model and Product Type
- Brand: Spektrum
- Model: M-SPMXSM2400
- Product Type: Spektrum M-SPMXSM2400 Firma 750Kv brushless motor for 1/6 scale 3S–8S RC vehicles, Spektrum M-SPMXSM2400 sensorless inrunner motor with 6.5mm bullet connectors, Spektrum M-SPMXSM2400 4-pole motor with CNC aluminum housing and 8mm steel shaft, Spektrum M-SPMXSM2400 with low-cog 8-magnet rotor and 3950W output, Spektrum Firma motor with precision ball bearings and high-efficiency windings
Dimensions & Weight
- Motor Length: 8.7 cm – supports secure mounting in 1/6 scale chassis
- Motor Diameter: 5.6 cm – compatible with 5687-class motor bays
- Shaft Diameter: 8 mm – hardened alloy steel shaft for drivetrain stability
- Product Weight: 947 g – robust construction for torque-heavy applications
Performance & Electrical Specifications
- Kv Rating: 750Kv – optimized for torque-rich propulsion and controlled acceleration
- Input Voltage Range: 3S–8S LiPo – supports high-voltage brushless setups
- Output Power: 3950W – delivers high-efficiency performance for large-scale builds
- Maximum Continuous Current: 80A – enables sustained high-load operation
- Efficiency: 87% – 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
Construction & Materials
- Rotor Design: Low-cog 8-magnet – enhances throttle response and startup smoothness
- Housing Material: CNC-machined aluminum – improves heat dissipation and structural durability
- Shaft Material: 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
Connectivity & Compatibility
- Connector Type: 6.5mm gold-plated bullet connectors – preinstalled for secure high-current connections
- Application: Designed for 1/6 scale buggies, truggies, and monster trucks – ideal for 3S–8S LiPo builds
- Recommended ESC: Firma 150A Smart ESC – ensures optimal pairing and performance
What’s in the Box
- (1) Firma 5687-750Kv 4-Pole Brushless Motor
What You Require
- Electronic Speed Control such as the Spektrum Firma 150A 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.
