How to match an electric motor to an RC aircraft
A practical guide to motor KV, voltage, current, thrust, aircraft weight and flight style so the power system matches the model.
Firma 4274 2250Kv 4-Pole Sensored Brushless Motor: 5mm
Prices are intentionally not displayed on the site.
Contact RC-MODEL for current availability, technical fit, compatible accessories and a formal quote.
Firma 4274 2250Kv 4-Pole Sensored Brushless Motor: 5mm is a Spektrum product intended for surface RC vehicles, crawlers, bashers and race setups that need dependable Spektrum control electronics. This page presents the practical buying information a customer needs before ordering: fit, SKU, image, category, specifications and usage advantages.
The content is written for purchasing through RC-MODEL, without supplier prices or links to competing stores.
Key Advantages
- Organized under the Spektrum telemetry and sensor range.
- Intended for surface RC vehicles, crawlers, bashers and race setups that need dependable Spektrum control electronics.
- Check model fit, connector type, voltage range and Spektrum protocol compatibility before ordering.
- Includes local product imagery and structured specifications for easier comparison inside RC-MODEL.
- Sensored design allows fine control at all speeds
- Perfect upgrade for 1/8th scale racers and bashers
- High efficiency design
Core Specifications
- Manufacturer: Spektrum
- Brand: Spektrum
- Product Code: SPMX-1046
- Product Family: Spektrum telemetry and sensor range
- Application: 1/8 Truggy and Buggy (Recommended with SPMXSE2130S ESC only)
- Compatibility Focus: Check model fit, connector type, voltage range and Spektrum protocol compatibility before ordering.
- Spektrum Category: Cars & Trucks / Parts, Electronics & Accessories / Motors
- Input Voltage: 3S - 6S
- Motor Type: Brushless
- Bushing Or Bearing: Bearing
- Motor Output Lead: Solder tabs
- Motor Size: 4274
- Number of Poles: 4
- Outer Diameter: 1.6" (41 mm)
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| Technical Specifications | |
| Manufacturer | Spektrum |
| Brand | Spektrum |
| Product Code | SPMX-1046 |
| Spektrum Category | Cars & Trucks / Parts, Electronics & Accessories / Motors |
| Product Family | Spektrum telemetry and sensor range |
| Application | 1/8 Truggy and Buggy (Recommended with SPMXSE2130S ESC only) |
| Compatibility Focus | Check model fit, connector type, voltage range and Spektrum protocol compatibility before ordering. |
| Input Voltage | 3S - 6S |
| Motor Output Lead | Solder tabs |
| Product Length | 2.9" (74 mm) |
| Product Weight | 12.7 oz (360g) |
| Motor Type | Brushless |
| Motor Size | 4274 |
| Number of Poles | 4 |
| RPM/Volt (Kv) | 2250Kv |
| Bushing Or Bearing | Bearing |
| Outer Diameter | 1.6" (41 mm) |
| Shaft Diameter | 0.19" (5 mm) |
| Recommended Speed Control | SPMXSE2130S |
| Shaft Length | 0.73" (19 mm) |
| Sensored | Yes |
Tags: Spektrum, SPMX-1046, Spektrum telemetry and sensor range, Spektrum Catalog, Spektrum Motors, Spektrum Surface Electronics, RC-MODEL