Delivery Included
1 Year Warranty
Overview
The Firma 2100Kv Sensored brushless motor is a great choice for 1/10 scale crawlers, rock racers, and trailers running on 2S – 3S LiPo power. Featuring a low cog 4-pole 8-magnet rotor design, CNC machined aluminum housing, insulated high purity copper windings, high-quality alloy steel 3.175mm (1/8") output shaft, and precision bearings for high durability and smooth rotation. Preinstalled with 4mm gold plated bullet connectors for easy installation. The Spektrum FIRMA 60A Sensored Brushless Smart Crawler ESC is required.
Features
- Excellent upgrade for 540 brushed motors with the same diameter and mounting pattern (vehicle must accept pinions with a 1/8" mm bore)
- Perfect balance of speed and torque, great for trail and scale crawling applications
- High-quality 4-pole sintered rotor
- Polarity protection - magnetic encoder inside the motor guarantees consistency between three phases' signals and always outputs precise signals indicated by rotor position. When installing simply match wire color to esc connectors
- 4mm gold plated bullet connectors
- Waterproof sensor wire with locking plug and gasket
- High-quality construction with precision ball bearings and hardened steel 1/8" shaft
Product Description of Spektrum M-SPMXSM3001 Firma 2100Kv sensored crawler motor
The Spektrum M-SPMXSM3001 Firma 2100Kv sensored crawler motor for 1/10 scale 2S–3S setups is engineered for trail rigs, rock racers, and scale crawling platforms that demand a precise balance of torque and speed. Designed as a direct upgrade for 540 brushed motors, this sensored brushless motor matches the same diameter and mounting pattern, making it ideal for builders seeking a seamless transition to high-performance control. With a 4-pole sintered rotor and low-cog 8-magnet design, the motor delivers smooth throttle response and consistent torque delivery across technical terrain. The integrated magnetic encoder ensures polarity-protected signal output, maintaining accurate rotor position feedback for refined crawling performance. Housed in CNC-machined aluminum and fitted with a hardened steel 1/8" shaft, the Spektrum M-SPMXSM3001 motor combines structural durability with installation simplicity, making it a trusted choice for 1/10 scale platforms running on 2S–3S LiPo power.
Key features of the Spektrum M-SPMXSM3001
- FOC sensored signal system – delivers precise rotor tracking for smooth throttle transitions
- Magnetic encoder – ensures consistent phase signal output and polarity protection
- Waterproof sensor wire – supports reliable operation in moisture-prone environments
- 3.5mm bullet connectors – enable secure, high-conductivity connections with minimal resistance
- Hardened steel 1/8" shaft – resists wear and supports torque-heavy gear engagement
- CNC aluminum housing – improves heat dissipation and protects internal components from vibration
How does the FOC sensor system enhance crawling precision?
The Spektrum M-SPMXSM3001 brushless motor with FOC sensor and 3.5mm bullet connectors features field-oriented control that continuously monitors rotor position and adjusts phase signals in real time. This system enables ultra-smooth throttle control, particularly at low speeds where precision is critical. Whether navigating tight rock formations or scaling uneven terrain, the FOC system ensures that torque delivery remains consistent and predictable, giving drivers the control they need for technical crawling scenarios.
Why is the magnetic encoder essential for signal accuracy?
The Spektrum M-SPMXSM3001 4-pole motor with magnetic encoder and waterproof sensor wire integrates a polarity-protected encoder that guarantees consistent signal output across all motor phases. This eliminates signal drift and ensures accurate rotor position feedback, which is vital for maintaining smooth and responsive throttle behavior. The encoder’s precision enhances the motor’s ability to deliver torque exactly when needed, making it ideal for scale crawling and trail applications where control is paramount.
What makes this motor suitable for rugged outdoor conditions?
The Spektrum Firma motor with CNC aluminum housing and hardened steel 1/8" shaft is built to withstand the rigors of outdoor use. Its waterproof sensor wire includes a locking plug and gasket to prevent moisture ingress, while the CNC-machined aluminum housing provides structural reinforcement and thermal management. The hardened steel shaft maintains gear alignment under load, ensuring long-term drivetrain reliability. These features make the motor a dependable choice for trail rigs and rock racers operating in wet or dusty environments.
Is the Spektrum M-SPMXSM3001 motor compatible with standard 540 brushed mounts?
Yes. The Spektrum 2100Kv motor for trail rigs, rock racers, and scale crawling platforms is designed to replace 540 brushed motors, featuring the same diameter and mounting pattern. Vehicles that accept pinions with a 1/8" bore can integrate this motor without modification, streamlining the upgrade process. This compatibility allows users to enhance their drivetrain performance without altering their chassis or gear setup, making it a practical and efficient upgrade path.
How do the 3.5mm bullet connectors simplify installation?
The Spektrum M-SPMXSM3001 sensored crawler motor for 1/10 scale 2S–3S setups comes preinstalled with 3.5mm gold-plated bullet connectors that support secure, high-current connections. These connectors reduce resistance and heat buildup, ensuring efficient power transfer during operation. Their compact size allows for clean installations in tight motor bays, and their polarity protection ensures safe and error-free wiring. For builders seeking a plug-and-play solution, these connectors offer both convenience and reliability.
Why is this motor a strategic upgrade for 1/10 scale trail builds?
The Spektrum M-SPMXSM3001 with low-cog rotor and polarity-protected signal output delivers a refined balance of torque and speed, making it ideal for scale crawling and trail applications. Its 4-pole rotor supports smooth rotation and low-speed fidelity, while the sensored architecture ensures precise throttle response. The motor’s compatibility with the Spektrum Firma 60A Sensored Brushless Smart Crawler ESC guarantees optimal pairing and system coherence. For users replacing brushed motors in 1/10 scale platforms, this motor stands out as the best Spektrum upgrade for achieving control, durability, and installation ease.
For RC enthusiasts building or upgrading 1/10 scale trail rigs, crawlers, or rock racers, the Spektrum M-SPMXSM3001 Firma 2100Kv sensored crawler motor for 1/10 scale 2S–3S setups delivers precision, torque, and long-term reliability. Buy Spektrum M-SPMXSM3001 motor for smooth throttle control and torque-rich crawling.
Technical Specifications of Spektrum M-SPMXSM3001 Firma 2100Kv sensored crawler motor
Brand, Model and Product Type
- Brand: Spektrum
- Model: M-SPMXSM3001
- Product Type: Spektrum M-SPMXSM3001 Firma 2100Kv sensored crawler motor for 1/10 scale 2S–3S setups, Spektrum brushless motor M-SPMXSM3001 with FOC sensor and 3.5mm bullet connectors, Spektrum 4-pole motor M-SPMXSM3001 with magnetic encoder and waterproof sensor wire, Spektrum M-SPMXSM3001 with low-cog rotor and polarity-protected signal output, Spektrum 2100Kv motor M-SPMXSM3001 for trail rigs, rock racers, and scale crawling platforms
Dimensions
- Motor Length: 5.8 cm – compact size for tight 1/10 scale crawler chassis
- Motor Diameter: 3.6 cm – matches standard 540-class brushed motor mounts
- Shaft Diameter: 0.3175 cm (1/8") – hardened steel shaft for secure gear engagement
Performance & Electrical Specifications
- RPM/Volt (Kv): 2100Kv – tuned for torque-rich crawling with balanced speed
- Input Voltage Range: 7.4V–11.1V (2S–3S LiPo) – supports standard trail rig power setups
- Maximum Continuous Current: 38A – enables sustained torque delivery under load
- Constant Wattage: 250–499W – supports efficient output for trail and scale crawling
- Motor Type: Brushless Sensored – delivers precise throttle response and rotor tracking
- Sensor Type: FOC Sensored – field-oriented control for ultra-smooth signal output
- Motor Design: Inrunner – compact and efficient for enclosed motor compartments
- Number of Poles: 4 – supports torque-rich propulsion and smooth rotation
- Main Motor Class: 1/10 Scale – engineered for crawlers, trailers, and rock racers
- Rotor Design: Low-cog 4-pole – enhances throttle fidelity and startup smoothness
Construction & Materials
- Housing Material: CNC-machined aluminum – improves heat dissipation and structural durability
- Shaft Material: Hardened steel – resists wear and ensures long-term mechanical integrity
- Windings: Insulated high-purity copper – maximizes conductivity and thermal control
- Cooling System: Passive – maintains consistent operating temperatures without external fans
- Encoder: Magnetic – ensures polarity protection and accurate rotor position feedback
- Bearings: Precision ball bearings – support smooth, vibration-free rotation and reduce drivetrain wear
Connectivity & Compatibility
- Connector Type: 3.5mm gold-plated bullet connectors – preinstalled for secure high-current connections
- Sensor Wire: Waterproof with locking plug and gasket – supports reliable operation in wet conditions
- Application: Designed for 1/10 scale crawlers, rock racers, and trailers – ideal for 2S–3S LiPo setups
- Recommended ESC: Spektrum Firma 60A Sensored Brushless Smart Crawler ESC – ensures optimal pairing and system coherence
What’s in the Box
- (1) Firma 2100Kv Brushless Sensored Crawler Motor
What You Require
- Electronic Speed Control such as the Spektrum Firma 60A Sensored Brushless Smart Crawler 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.
