Overview
The SPM Firma 3800Kv 4-Pole Brushless Motor is a high-performance motor designed for RC enthusiasts looking to upgrade their RC car with genuine Spektrum quality and reliability. This brushless motor represents the pinnacle of electric motor engineering for RC vehicles, offering smooth power delivery and exceptional efficiency that serious RC racers and bashers demand. Whether you're piloting a competitive 1/10 scale RC buggy, setting up a new RC monster truck, or seeking a brushless motor upgrade for your existing RC car UK setup, the Firma 3800Kv delivers consistent performance that'll keep you racing lap after lap.
Manufactured by Spektrum, a recognised leader in spread spectrum technology and RC electronics, this motor is engineered to exacting standards and backed by the technical expertise that makes Spektrum products trusted across the UK RC community. The 3800Kv specification positions this motor perfectly for mid-range power applications, balancing speed and torque characteristics to suit a variety of ready to run RC vehicles and custom builds. With its 4-pole design, this brushless motor generates smooth, responsive acceleration whilst maintaining the durability needed for both competitive racing and casual weekend bashing.
Spektrum's Firma series motors represent the gold standard in brushless RC motor technology, and this 3800Kv variant is no exception. The engineering precision, quality of materials, and attention to detail evident in every Firma motor ensures that RC enthusiasts investing in this motor are getting a product that will perform reliably season after season. If you're serious about maximising your RC car's potential, this genuine Spektrum Firma brushless motor deserves your consideration.
Key Features
- 3800Kv Rating — The 3800Kv specification determines the motor's speed constant, meaning it will rotate 3800 revolutions per minute for every volt supplied, making it ideal for mid-range power applications where you need a balance between acceleration and top speed. This KV rating is a critical specification that determines how your RC car will perform under load.
- 4-Pole Design — The 4-pole configuration is the foundation of this motor's smooth power delivery and efficiency, creating a more balanced magnetic field that reduces vibration and cogging whilst maximising torque throughout the RPM range. Four-pole motors are the industry standard for high-performance RC applications because they deliver superior throttle response compared to lower pole-count alternatives.
- Brushless Technology — The brushless design eliminates the friction and wear associated with traditional brushed motors, resulting in cooler running temperatures, longer operational lifespan, and dramatically reduced maintenance requirements. Brushless motors are the industry standard for serious RC hobbyists because they offer efficiency gains that translate directly into longer run times and better overall performance from your RC car.
- Spektrum Firma Quality — Manufactured by Spektrum, a recognised leader in RC electronics and spread spectrum technology, this motor carries the reputation and engineering excellence that the Firma series has earned across competitive racing circuits and RC clubs throughout the UK and beyond. Choosing a genuine Spektrum Firma motor means you're investing in proven technology that professional RC racers trust.
- Reliable Performance — Built with precision-engineered components and stringent quality control, the Firma 3800Kv motor is designed to deliver consistent, dependable performance whether you're running competitive heats, enjoying weekend bashing sessions, or testing setups on your local RC track. The motor's robust construction ensures it will handle the demands of serious RC car driving without faltering.
Technical Performance
The SPM Firma 3800Kv 4-Pole Brushless Motor represents contemporary brushless motor engineering at its finest, delivering the performance characteristics that separates premium RC equipment from budget alternatives. The 3800Kv rating positions this motor in the sweet spot for many 1/10 scale RC cars, providing ample acceleration whilst maintaining reasonable top speeds depending on your final drive ratio and wheel size. The brushless construction inherently runs cooler than brushed alternatives, meaning your motor will maintain consistent performance throughout extended driving sessions without the thermal degradation that can affect brushed motors under sustained load. The 4-pole design is the result of decades of RC motor development, ensuring smooth power delivery across the full throttle range and minimising vibration that can affect handling precision and drivability. When paired with an appropriate Spektrum ESC and LiPo battery system, the Firma 3800Kv will extract maximum efficiency from your power system, translating electrical energy into usable rotational force with minimal waste heat. The precision bearings and balanced rotor ensure minimal run-out and vibration, critical factors in maintaining the tight tolerances required for competitive RC racing. This motor's construction and materials are optimised for reliability, meaning you can focus on driving rather than worrying about equipment failure. Whether you're running 2S, 3S, or higher voltage systems (depending on your chosen ESC and battery configuration), this motor will deliver the consistent, responsive performance that competitive RC enthusiasts and serious bashers expect from genuine Spektrum equipment.
What's in the Box
- SPM Firma 3800Kv 4-Pole Brushless Motor
What You Need to Complete
- Compatible brushless ESC (Electronic Speed Controller) rated for your voltage system
- LiPo battery pack in 2S, 3S, or higher configuration depending on your ESC specifications
- RC vehicle chassis designed to accept this motor specification
- Motor mounting hardware appropriate to your chosen vehicle platform
- Charger capable of balancing and charging your selected LiPo battery
Frequently Asked Questions
- What KV rating does the Firma 3800Kv motor have and what does this mean? — The 3800Kv rating indicates that this motor will rotate at 3800 RPM for every volt supplied under no-load conditions. In practical RC applications, this KV rating helps determine the motor's speed characteristics and how it will pair with your chosen gearing and battery voltage. A 3800Kv motor sits in the mid-range, offering a good balance between acceleration and top speed for a variety of RC car types.
- Is the Spektrum Firma 3800Kv suitable for beginners or racing enthusiasts? — The Firma 3800Kv is suitable for RC enthusiasts at all levels, from those upgrading an existing ready to run RC car to competitive racers looking for premium components. Brushless motors like this are increasingly common in entry-level RC vehicles, but the Firma series' reputation for quality makes it equally at home in professional racing setups. If you're replacing a motor in your RC car or building a new brushless setup, this is an excellent choice.
- What ESC and battery voltage should I use with the 3800Kv motor? — The specific ESC and battery voltage you choose depends on your vehicle platform and performance requirements. A Spektrum Firma 3800Kv motor will work with Spektrum ESCs and other quality brushless controllers paired with 2S LiPo (7.4V), 3S LiPo (11.1V), or higher voltage systems depending on your motor's insulation rating and your ESC's maximum voltage specification. We recommend consulting your vehicle's manual or contacting our knowledgeable team for guidance on optimal setup configurations for your specific RC car.
- How does the 4-pole design benefit my RC car's performance? — The 4-pole design is the industry standard for high-performance RC motors because it creates smoother power delivery compared to lower pole-count motors, reduces cogging (the sensation of jerky acceleration), minimises vibration, and improves overall efficiency. This translates to better throttle response, more predictable handling characteristics, and improved battery runtime in your RC car.
- What makes a genuine Spektrum Firma motor different from other brushless motors? — Spektrum Firma motors are engineered to exacting specifications using premium materials and rigorous quality control processes. The Firma series has earned its reputation through proven performance in competitive RC racing and serious bashing applications throughout the UK and internationally. Genuine Spektrum motors maintain tighter tolerances, use superior bearings, and feature better balanced rotors compared to budget alternatives, resulting in longer lifespan, better performance, and greater reliability.
Why Buy from RC Model Shop?
RC Model Shop is a trusted UK RC retailer and authorised dealer for all the brands we stock, including Traxxas, ARRMA, Losi, FTX, Hobbywing, Spektrum and more. Based in Walsall, we have a physical store where customers are welcome to come in, view products and purchase in store. Whether you are a seasoned competitor, a weekend basher, or just discovering the world of RC for the first time, our team of experienced RC enthusiasts is here to help you find the perfect setup and provide ongoing support. Order the SPM Firma 3800Kv 4-Pole BL Motor M-SPMXSM2900 today with confidence, knowing you are buying from an authorised retailer with genuine products, expert knowledge and a commitment to customer satisfaction. Shop online or visit us in Walsall — we look forward to helping you get the most out of your RC experience.
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.
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