Product Details
The Spektrum Firma 5-Pole Rebuildable Brushed Motors offer an impressive low-cost upgrade for brushed esc equipped 1/10th scale Crawlers and Scalers. Featuring fully rebuildable design, impressive low-end torque and control, and excellent efficiency.
Key Features
- 5-pole design provides half the speed of 3-pole design counterparts
- Adjustable timing for clockwise and counterclockwise motor rotation
- 540 can size - perfect upgrade for most 1/10th scale
- Pre-shaped curved face brushes - No break-in period required!
- Wires and 3.5mm bullets installed - No soldering required!
In The Box - (1) Spektrum Firma 5-Pole Rebuildable Brushed 20 Turn Motor
- (1) Product Manual
Needed to Complete - (1) Brushed ESC 40 Amp or Higher
Next-level Slow Speed Control
The Spektrum Firma 5-Pole Rebuildable Brushed Motors offer an impressive low-cost upgrade for brushed esc equipped 1/10th scale Crawlers and Scalers. Featuring a fully rebuildable design, impressive low-end torque and control, and excellent efficiency.
Key Benefits
- 5–Pole design Maximizes smooth throttle control at low speeds and efficiency
- Fully Rebuildable Easy to replace parts for simple maintenance and increased motor lifespan
- Adjustable Timing: 0 to 20 degree timing adjustments for expert level tuning and increased performance
Features
- Available in 16T and 20T configurations
- 5-pole design provides half the speed of 3-pole design counterparts
- Adjustable timing for clockwise and counterclockwise motor rotation
- 540 can size – perfect upgrade for most 1/10th scale
- Pre-shaped curved face brushes – No break-in period required!
- Wires and 3.5mm bullets installed – No soldering required!
- Dual rubber sealed bearings
- Fully rebuildable with an easily accessible commutator and replaceable brushes, springs, and bearings
- 2S LiPo/6Cell NiMH recommended battery
Overview
The Spektrum Firma 20T Rebuildable 5-Pole Brushed Crawler Motor is a game-changing upgrade for RC enthusiasts running brushed ESC-equipped 1/10th scale crawlers and scalers across the UK. Whether you're a seasoned RC car enthusiast or exploring high-performance RC crawling for the first time, this motor delivers exceptional low-end torque and control that transforms your crawling experience. The Firma 20T represents outstanding value for money, offering professional-grade performance without the premium price tag of brushless alternatives, making it the ideal choice for both weekend bashers and competitive crawlers.
Spektrum, recognised globally as the leader in spread spectrum technology and RC innovation, has engineered the Firma series to meet the exacting demands of modern crawler racing. This rebuildable brushed motor is specifically designed to maximise smooth throttle control at low speeds—the critical advantage in technical terrain where precision handling separates champions from the rest. Unlike standard brushed motors that require lengthy break-in periods, the Firma 20T arrives ready to perform immediately, with pre-shaped curved face brushes that deliver instant performance without any compromise on longevity or reliability.
If you're searching for a brushed RC motor upgrade for your 1/10 scale crawler, the Firma 20T represents the new standard in crawler motor technology. Its fully rebuildable construction ensures your investment remains viable for years, with easily replaceable components that keep maintenance simple and costs low. For RC car UK buyers seeking maximum slow-speed control and efficiency, this is the motor that delivers results on every terrain.
Key Features
- 5-Pole Design for Superior Control — The five-pole architecture provides exactly half the speed of conventional 3-pole motor designs, delivering dramatically improved low-speed throttle resolution and precise speed control that is absolutely essential for technical crawler courses and rocky terrain where smooth modulation wins races.
- Fully Rebuildable Construction — Every critical component is designed for easy replacement, including the brushes, springs, and bearings, ensuring your motor can be restored to factory performance specifications without requiring complete replacement, dramatically extending the lifespan of your investment.
- Adjustable Timing for Expert Tuning — With 0 to 20 degree timing adjustments available, experienced drivers can fine-tune motor response for clockwise or counterclockwise rotation, enabling competition-level performance optimisation that adapts to different ESCs, terrain conditions, and driving styles.
- 540 Can Size Standard — The industry-standard 540 can dimensions make this motor a perfect direct upgrade for the vast majority of 1/10th scale crawlers and scalers currently in use across the UK, with no chassis modifications required.
- Pre-Shaped Curved Face Brushes — Spektrum's precision-engineered brushes come factory-shaped for immediate performance, eliminating the frustration and time investment of traditional brush break-in periods whilst maintaining exceptional brush longevity and consistent performance throughout the motor's operational life.
- Pre-Installed Wiring and Connectors — The motor arrives with wires and 3.5mm bullets already installed and soldered to factory standards, meaning you can mount and run your motor within minutes rather than spending valuable time on electrical connections.
- Dual Rubber Sealed Bearings — High-quality sealed bearings protect against dirt, water, and debris ingress whilst maintaining smooth, low-friction rotation, essential for durability when crawling through challenging outdoor environments and muddy terrain.
- Low-Cost Upgrade Path — For owners of brushed ESC-equipped crawlers, this motor represents an impressive performance increase at a fraction of the cost of transitioning to brushless systems, making it the savvy upgrade choice for budget-conscious racers.
Technical Performance
The Spektrum Firma 20T Rebuildable 5-Pole Brushed Crawler Motor represents a sophisticated engineering achievement in brushed motor design, optimised specifically for the unique demands of 1/10th scale crawler and scaler racing. The 5-pole configuration is the critical differentiator—this design provides half the speed of traditional 3-pole motors, which translates directly into dramatically superior throttle control at the low speeds where modern crawler racing is decided. Whether you're navigating technical rock gardens, ascending steep gradients, or executing precise line selection through tight courses, the Firma 20T delivers smooth, linear power delivery that rewards driver skill and consistency. The motor utilises pre-shaped curved face brushes manufactured to Spektrum's exacting standards, eliminating the traditional break-in period that characterises lesser brushed motors and ensuring you achieve peak performance from the very first use. Built around the standard 540 can size, the Firma 20T integrates seamlessly into existing 1/10th scale platforms, making it an accessible upgrade for crawlers and scalers currently equipped with brushed ESC systems rated at 40 amps or higher. The fully rebuildable design incorporates easily accessible commutators alongside replaceable brushes, springs, and dual rubber-sealed bearings, ensuring that wear components can be refreshed without motor replacement. The adjustable timing range of 0 to 20 degrees accommodates diverse ESC characteristics and allows experienced drivers to extract every last increment of performance through expert-level tuning. Spektrum recommends pairing the Firma 20T with 2S LiPo or 6-cell NiMH battery systems, with efficient operation ensuring extended runtime and reduced thermal stress. The engineering quality, component durability, and thoughtful design details demonstrate Spektrum's commitment to delivering professional-grade RC motor technology at accessible price points for the UK RC community.
What's in the Box
- Spektrum Firma 5-Pole Rebuildable Brushed 20 Turn Motor
- Product Manual
What You Need to Complete
- Brushed ESC rated 40 Amps or higher
- 2S LiPo or 6-cell NiMH battery system
Frequently Asked Questions
- Is the Spektrum Firma 20T suitable for beginners and first-time crawler owners? — Yes, absolutely. Whilst the adjustable timing feature appeals to experienced racers seeking competition-level performance, the Firma 20T is exceptionally user-friendly for newcomers. The pre-shaped brushes require zero break-in, the wiring arrives pre-installed with 3.5mm bullets, and the straightforward rebuildable design makes maintenance straightforward. Beginners benefit immediately from the superior low-speed control that the 5-pole design delivers, making technical terrain feel more manageable and rewarding.
- What battery does the Spektrum Firma 20T motor require? — Spektrum recommends either 2S LiPo or 6-cell NiMH battery systems. Both provide the voltage characteristics that optimise the Firma 20T's performance envelope. 2S LiPo batteries offer higher discharge rates and lighter weight, whilst 6-cell NiMH systems provide more forgiving charging characteristics and robust reliability. Ensure your brushed ESC is rated for 40 amps or higher current delivery to safely handle the motor's peak demands.
- How does the Firma 20T compare to 3-pole brushed motors? — The critical difference is speed reduction and throttle control. The Firma 20T's 5-pole design delivers exactly half the speed of 3-pole alternatives, which translates into dramatically superior low-speed precision and throttle resolution. For crawler racing where slow-speed control determines success, this advantage is transformative. The 5-pole design also delivers improved efficiency and smoother power delivery across the entire throttle range, with noticeably reduced cogging compared to conventional motor designs.
- Can I rebuild the Firma 20T motor myself? — Yes, that's a core design philosophy. The fully rebuildable construction features an easily accessible commutator and replaceable brushes, springs, and bearings. When wear becomes visible, refreshing these components restores the motor to factory performance standards without requiring replacement of the entire unit. The product manual provides guidance on disassembly and reassembly, making maintenance accessible to owners with basic mechanical aptitude. This design philosophy dramatically extends the motor's economic lifespan and reduces long-term ownership costs compared to sealed alternative motors.
- What makes the pre-shaped curved face brushes different from standard brushes? — Spektrum's precision-engineered brushes arrive factory-shaped to the exact geometry required for optimal contact with the commutator. Standard brushes require a break-in period during which they gradually conform to commutator shape, during which performance is compromised. The Firma 20T's pre-shaped brushes eliminate this break-in period entirely, delivering peak performance from the first throttle input whilst maintaining exceptional longevity throughout the brush's operational life.
- Is the Firma 20T compatible with my existing crawler? — If your crawler uses a brushed ESC system and accepts standard 540 can-sized motors, the answer is yes. The Firma 20T's 540 can dimensions are industry standard and fit seamlessly into the vast majority of 1/10th scale crawlers and scalers. The pre-installed 3.5mm bullet connectors are standard in the RC hobby, making electrical integration straightforward. Simply verify that your brushed ESC is rated for 40 amps or higher, and you're ready to experience the performance upgrade.
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 20T Rebuildable 5-Pole Brushed Crawler Motor M-SPMXSM5205 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.
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