Product Description of Spektrum M-SPMX-1085 4730 350Kv brushless outrunner motor 

The Spektrum M-SPMX-1085 4730 350Kv brushless outrunner motor for 800-class helicopters is engineered to deliver high-torque performance and smooth RPM control for advanced electric heli builds. Designed for pilots operating large-scale rotorcraft, this motor supports 6S–12S LiPo configurations and integrates seamlessly into Blade Fusion 800 platforms. Its low-Kv rating and robust 4730 size class make it ideal for driving large-diameter rotors with precision, stability, and voltage efficiency. Whether you're focused on scale realism, cyclic finesse, or aggressive 3D flight, the Spektrum M-SPMX-1085 motor offers the torque and control required to elevate your flying experience.

Key features of the Spektrum M-SPMX-1085 motor

• Low-Kv output – supports large rotor blades with stable RPM and torque delivery
• Outrunner configuration – enhances torque at lower RPMs for precise cyclic control
• Preinstalled connectors – simplifies setup with secure high-current bullet terminals
• OEM-compatible sizing – enables direct fitment into Blade Fusion 800 frames
• Brushless architecture – reduces heat and wear for extended flight sessions
• Durable build – withstands vibration and stress during demanding maneuvers

Why is the Spektrum M-SPMX-1085 motor ideal for 800-class helicopters?

The Spektrum M-SPMX-1085 350Kv motor for 6S–12S LiPo electric heli builds is tailored for high-voltage power systems that demand consistent torque and refined RPM control. With a 350Kv rating, this motor delivers the low-RPM torque necessary to drive large rotor blades efficiently, making it a strategic choice for 800-class helicopters. The Kv profile ensures that pilots can maintain stable lift and precise cyclic response across a wide range of throttle inputs. Whether hovering with scale realism or executing high-speed transitions, the motor’s output remains predictable and responsive, supporting both casual and competitive flight styles.

How does the outrunner design improve torque and flight control?

The Spektrum M-SPMX-1085 with torque-rich outrunner design and brushless efficiency features an external rotor configuration that maximizes magnetic interaction and torque generation. This design is particularly beneficial for large-scale helicopters, where low-RPM torque is essential for stable lift and accurate cyclic behavior. The outrunner format also contributes to smoother throttle transitions and reduced vibration, enhancing overall flight control. For pilots flying 800-class platforms, this configuration ensures that every input translates into refined movement, whether during slow hover or aggressive pitch changes. The mechanical simplicity of the outrunner design further reduces maintenance and improves long-term reliability.

What installation advantages do the preinstalled connectors offer?

The Spektrum M-SPMX-1085 helicopter motor with 6mm bullet connectors and OEM fit arrives with factory-installed high-current terminals that streamline the setup process. These 6mm bullet connectors provide secure electrical connections with compatible ESCs, minimizing resistance and improving system efficiency. By eliminating the need for soldering or custom wiring, pilots can focus on tuning and flight preparation rather than installation logistics. This plug-and-play convenience is especially valuable in high-voltage systems, where connection integrity directly impacts performance and safety. The connectors also support rapid motor swaps and diagnostics, making the Spektrum M-SPMX-1085 motor a practical choice for builders and technicians alike.

Is the Spektrum M-SPMX-1085 motor compatible with Blade Fusion 800 platforms?

Yes. The Spektrum helicopter motor with high-voltage compatibility and drop-in fit for Blade platforms is designed with OEM sizing and mounting patterns that align with Blade Fusion 800 frames. This compatibility simplifies installation and ensures proper alignment with drivetrain components, reducing setup time and eliminating guesswork. For pilots upgrading from stock motors or assembling custom 800-class configurations, the Spektrum M-SPMX-1085 motor offers a reliable and performance-matched solution. Its mechanical footprint supports standard helicopter motor mounts, and its electrical specifications align with high-performance ESCs used in Blade systems, making integration seamless and efficient.

How does brushless efficiency support extended and aggressive flying?

The Spektrum 350Kv motor for scale realism, cyclic precision, and 3D flight control leverages brushless technology to minimize heat generation and mechanical wear during operation. This efficiency translates into longer flight durations, reduced maintenance intervals, and more consistent performance across multiple sessions. Brushless motors eliminate friction points found in brushed designs, allowing for smoother rotation and improved thermal management. For pilots engaging in extended flights or high-load maneuvers, this efficiency ensures that the motor remains cool and responsive, preserving battery life and protecting internal components. The result is a propulsion system that supports both scale flying and aggressive aerobatics with equal reliability.

What makes the Spektrum M-SPMX-1085 motor a durable choice for demanding flight profiles?

The Spektrum M-SPMX-1085 4730 350Kv brushless outrunner motor for 800-class helicopters is built to withstand the mechanical demands of high-intensity flying. Its construction resists vibration and stress during rapid pitch changes, inverted flight, and high-speed transitions. The torque-rich output and smooth RPM control enable pilots to execute complex maneuvers with precision and confidence. Combined with high-voltage compatibility and secure ESC integration, the motor supports aggressive throttle inputs without sacrificing stability or responsiveness. For pilots seeking the best Spektrum upgrade for torque delivery and smooth RPM control in electric helis, this motor delivers the performance and reliability required for advanced flight profiles.

Why is the Spektrum M-SPMX-1085 motor a strategic investment for electric helicopter builders?

The Spektrum M-SPMX-1085 4730 350Kv brushless outrunner motor for 800-class helicopters combines voltage efficiency, torque-rich output, and installation simplicity in a single, performance-driven package. Its 350Kv rating supports smooth rotor dynamics, while the outrunner design enhances torque delivery and flight stability. Preinstalled connectors and OEM fitment reduce setup complexity, and brushless architecture ensures long-term reliability. For builders seeking the affordable Spektrum 4730 350Kv motor for high-performance rotor setups and ESC pairing, this motor offers unmatched value and integration. Buy Spektrum M-SPMX-1085 motor for precision hovering and aggressive 3D maneuvers.

Technical Specifications of Spektrum M-SPMX-1085 4730 350Kv brushless outrunner motor 

Brand, Model and Product Type

• Brand: Spektrum
• Model: M-SPMX-1085
• Product Type: Spektrum M-SPMX-1085 4730 350Kv brushless outrunner motor for 800-class helicopters, Spektrum M-SPMX-1085 helicopter motor with 6mm bullet connectors and OEM fit, Spektrum M-SPMX-1085 350Kv motor for 6S–12S LiPo electric heli builds, Spektrum M-SPMX-1085 with torque-rich outrunner design and brushless efficiency, Spektrum 350Kv motor for scale realism, cyclic precision, and 3D flight control

Dimensions

• Size Class: 4730 – the motor measures 4.7 cm in diameter and 3.0 cm in length, ideal for compact integration in 800-class helicopter frames
• Connector Diameter: 0.6 cm – supports high-current flow with minimal resistance and secure ESC pairing

Electrical and Mechanical Specifications

• Kv Rating: 350Kv – engineered for smooth RPM control and torque-rich output in high-voltage helicopter systems
• Voltage Compatibility: 6S–12S LiPo – supports a wide range of electric heli builds with consistent power delivery
• Motor Type: Brushless outrunner – reduces mechanical wear and improves thermal performance during extended flights
• Rotor Configuration: Outrunner design – provides high torque at lower RPMs for scale realism and cyclic precision
• Connector Type: 6mm bullet connectors – preinstalled for secure, high-current ESC integration and simplified setup
• Application: Designed for 800-class electric RC helicopters – supports precision hovering and aggressive 3D maneuvers
• Mounting Pattern: Standard helicopter motor mount – ensures drop-in fit for Blade Fusion 800 and compatible platforms
• Thermal Efficiency: Brushless architecture minimizes heat buildup – ideal for sustained high-load maneuvers
• Mechanical Durability: Built to withstand vibration and stress – supports demanding flight profiles and rapid pitch transitions
• ESC Compatibility: Compatible with high-performance helicopter ESCs – supports clean and responsive throttle mapping
• Installation Simplicity: OEM fitment reduces setup time – aligns with factory mounting and electrical standards
• Flight Profile Support: Suitable for scale realism, cyclic precision, and 3D flight control – enables versatile flying styles
• Maintenance Profile: Low-maintenance brushless design – eliminates friction points and extends operational lifespan
• Performance Stability: Consistent torque delivery across voltage range – supports reliable lift and maneuverability
• System Integration: Designed for seamless pairing with Blade helicopter electronics – ensures optimal performance alignment

What’s in the Box

• (1) Spektrum 4730 350Kv Brushless Outrunner Helicopter Motor – model M-SPMX-1085

What You Require

• (1) Compatible ESC with 6mm bullet connectors and support for 6S–12S LiPo input

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.
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• 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.