In Stock With Supplier
Delivery Included
1 Year Warranty
The Spektrum M-SPMXMM1400 Firma 4068 1600Kv brushless marine motor for 4S–6S RC boats is engineered for RC boaters who demand torque-rich propulsion, smooth throttle response, and thermal stability in deep-V and hydroplane hulls. Designed for 1/8 scale brushless platforms, this mid-Kv motor delivers balanced acceleration and sustained top-end speed without thermal overload. Its 4-pole sensorless architecture ensures consistent torque and simplified setup, while the integrated water cooling jacket actively dissipates heat during extended operation. With a 5mm shaft and 5.5mm bullet connectors, the Spektrum M-SPMXMM1400 motor offers robust drivetrain support and seamless ESC integration—making it a drop-in upgrade for Pro Boat UL-19 and Impulse 32" platforms.
Key features of the Spektrum M-SPMXMM1400 motor
- 1600Kv output – delivers strong acceleration and high RPM for deep-V and hydroplane hulls
- 4-pole sensorless design – ensures smooth throttle response and consistent torque
- Water cooling jacket – maintains thermal stability during continuous throttle use
- 5mm shaft – supports robust drivetrains and propeller systems
- 5.5mm bullet connectors – enables secure, high-current ESC integration
- OEM fit – compatible with Pro Boat UL-19 and Impulse 32" for streamlined installation
Why is the 1600Kv rating ideal for mid-scale marine propulsion?
The Spektrum 1600Kv motor for UL-19 and Impulse 32" compatibility offers a balanced power profile that supports both rapid acceleration and sustained top-end velocity. Its mid-Kv output is optimized for 4S–6S LiPo setups, delivering high RPM without thermal overload. This makes it ideal for 1/8 scale deep-V and hydroplane hulls where responsiveness and speed must be matched with reliability. Whether you're racing or cruising, the motor’s Kv rating ensures consistent performance across throttle ranges.
How does the 4-pole sensorless design enhance control?
The Spektrum M-SPMXMM1400 4-pole sensorless motor with water cooling jacket features a rotor configuration that minimizes cogging and vibration. The 4-pole layout provides smoother magnetic transitions, resulting in refined throttle response and stable torque delivery. Sensorless operation simplifies installation and reduces mechanical complexity, making it ideal for builders who prioritize performance and ease of use. This design ensures that the motor performs reliably under aggressive launches and sustained high-speed conditions.
What role does the water cooling jacket play in thermal management?
The Spektrum M-SPMXMM1400 with mid-Kv output and thermal stability for deep-V hulls includes an integrated water cooling jacket that circulates fluid around the motor housing to dissipate heat. This feature is essential for marine environments where continuous throttle use can lead to thermal buildup. By maintaining optimal operating temperatures, the cooling system protects internal components and preserves consistent performance. For boaters pushing their setups to the limit, this thermal management system ensures that the motor remains cool, efficient, and responsive throughout the run.
Is the Spektrum M-SPMXMM1400 motor compatible with Smart ESCs?
Yes. The Spektrum Firma motor with smooth throttle response and Smart ESC support is designed to pair seamlessly with Firma Smart Marine ESCs, including the 160A variant. This compatibility enables telemetry feedback, adaptive timing, and simplified setup, enhancing system awareness and control. The motor’s electrical specifications align with Smart ESC parameters, ensuring safe current handling and efficient power delivery. For users building Smart Technology-equipped boats, this integration offers a reliable and performance-matched solution.
Why choose the Spektrum M-SPMXMM1400 motor for your next RC boat build?
The Spektrum M-SPMXMM1400 Firma 4068 1600Kv brushless marine motor for 4S–6S RC boats combines mid-Kv output, thermal stability, and installation simplicity in a single, race-ready package. Its 4-pole sensorless design supports aggressive launches, while the water cooling jacket ensures consistent performance during extended runs. With OEM compatibility for Pro Boat UL-19 and Impulse 32", this motor offers plug-and-play convenience and elite propulsion. For RC boaters seeking the affordable Spektrum 4068 1600Kv motor for aggressive offshore RC boating setups, this model delivers unmatched value and reliability. Buy Spektrum M-SPMXMM1400 motor for high-speed marine builds with 4S–6S LiPo.
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.
