Etronix Sport Tuned 550 Brushed Motor 21-Turn RC Car Motor ET0300-21

Overview

The Etronix Sport Tuned Brushed Motor 550 - 21T (ET0300-21) is a high-quality 550-size brushed electric motor engineered to deliver reliable, sport-tuned performance for radio controlled models across the UK and beyond. This 21-turn brushed motor represents an ideal choice for RC enthusiasts seeking straightforward, dependable power without the complexity of brushless alternatives. Whether you're running an RC car UK-based or exploring the world of hobby-grade RC vehicles, this motor offers the perfect balance of torque and speed characteristics that make it suitable for a wide range of applications.

Brushed motors remain a cornerstone of RC modelling, offering simplicity, affordability, and proven reliability that continues to appeal to both beginners discovering RC cars for the first time and experienced hobbyists who value the straightforward maintenance characteristics typical of brushed motor technology. The Etronix Sport Tuned Brushed 550 Motor exemplifies this philosophy, providing an approachable entry point into RC motoring without sacrificing quality or performance. At RC Model Shop, we stock this motor because we understand that many RC enthusiasts prefer the tactile, mechanical nature of brushed power systems, and this particular motor delivers exactly that.

The 21-turn wind configuration strikes an excellent balance, offering more torque than higher-turn alternatives whilst maintaining adequate speed for sport-oriented driving. This makes it particularly versatile for RC buggy applications, RC short course trucks, and other platform types where a measured combination of acceleration and top speed is preferred. If you're building a custom RC setup or upgrading an existing model, this motor provides the foundation for exciting performance without requiring extensive technical knowledge to install and maintain.

Key Features

• 550-Size Brushed Motor — The 550 form factor is the industry-standard size for RC applications, meaning excellent compatibility with a vast range of RC car platforms, gearboxes, and mounting systems available in the UK market and globally. This universality makes it easy to integrate into your existing RC setup or new build.
• 21-Turn (21T) Wind Configuration — The 21-turn winding provides an excellent middle ground between high-torque low-KV motors and higher-speed alternatives, delivering responsive acceleration combined with respectable top-end speed. This makes it ideal for sport-oriented driving where balance is valued over extreme performance in either direction.
• Sport-Tuned Performance Setup — Etronix has optimised this motor specifically for sport-tuned driving characteristics, meaning you get a motor that's been engineered for consistency and predictability rather than maximum raw power, making it excellent for drivers who value control and precision.
• Brushed Motor Technology — Unlike brushless alternatives, brushed motors are mechanically simpler, requiring only basic maintenance and offering excellent value for money. There's no need for specialised brushless ESC compatibility checking, as any quality brushed speed controller will work with this motor.
• Straightforward Installation — With standard 550 motor dimensions and a 3.2mm bore, this motor integrates seamlessly into RC models designed for 550 motors, requiring no custom modifications or specialist knowledge to fit correctly.
• Proven Reliability — Etronix is a respected manufacturer in the RC hobby, and this motor benefits from proven engineering and quality control standards that ensure consistent performance and longevity even with regular use.

Technical Performance

The Etronix Sport Tuned Brushed Motor 550 - 21T delivers the engineering quality you'd expect from a recognised RC motor manufacturer. At 550 size with a 21-turn brushed configuration and 3.2mm bore, this motor is optimised for models where a balanced power delivery is more valuable than extreme speed or torque. The brushed design ensures compatibility with any brushed speed controller rated appropriately for 550 motors, giving you flexibility in your ESC selection whether you're building a budget-conscious setup or a competition-grade platform. The sport-tuned calibration means this motor has been specifically optimised during manufacture to deliver predictable, reliable performance characteristics that respond well to driver input. Build quality is evident in the construction, with brushed motors of this specification engineered to handle sustained running in competitive or recreational driving scenarios. For best results, ensure your speed controller and gearing are appropriate for a 550 brushed 21T motor configuration, and follow your specific RC model's guidance during installation. The straightforward brushed technology means maintenance is minimal — periodic brush inspection and occasional commutator cleaning will keep this motor running at peak performance for years of enjoyable RC driving, whether you're bashing casually at home or competing in organised events across the UK.

What's in the Box

• Etronix Sport Tuned Brushed Motor 550 - 21T (ET0300-21)

What You Need to Complete

• Compatible brushed speed controller (ESC) rated for 550 motors
• LiPo or NiMh battery pack appropriate for your RC model
• RC model platform designed for 550 motor compatibility
• Gearing and transmission components specific to your RC vehicle type

Frequently Asked Questions

• What is the difference between a 21T brushed motor and other turn ratings? — Turn ratings indicate the number of windings around the motor armature. A 21T motor offers moderate torque output compared to higher-turn motors like 25T or 27T, which prioritise torque even more. Conversely, lower-turn motors like 17T or 19T emphasise speed. The 21T configuration represents a sport-tuned sweet spot, balancing both characteristics for versatile performance suitable for RC cars that need responsive acceleration without extreme top speed.
• Is this motor suitable for beginners to RC? — Yes, absolutely. Brushed motors like this are genuinely beginner-friendly because they require no complex brushless ESC compatibility considerations and need only basic maintenance. The sport-tuned 21T setup offers predictable, controllable performance that helps new RC enthusiasts develop driving skills without overwhelming complexity. Beginners often find brushed motors easier to understand and troubleshoot compared to brushless systems.
• What battery type and size does the Etronix 550 21T motor need? — This motor is compatible with both LiPo and NiMh battery packs, depending on your RC model's design. You'll need to consult your specific RC vehicle's manual or manufacturer guidance for the correct battery voltage, capacity (mAh), and connector type. Generally, 550 motors work well with 2S or 3S LiPo batteries or equivalent NiMh packs, but always verify your particular model's requirements.
• What type of speed controller (ESC) do I need with this motor? — You'll need a brushed speed controller rather than a brushless ESC. Brushed ESCs are widely available and often more affordable than brushless alternatives. Ensure your brushed ESC is rated for appropriate current output based on your gearing and driving style — typically 30A to 60A for 550 motor applications depending on load and usage.
• How does this motor compare to brushless alternatives? — Brushed motors like this offer simpler installation, lower cost, and minimal maintenance compared to brushless systems, which require specialised brushless ESCs and more precise setup. Brushless motors typically offer higher efficiency and less heat generation, but brushed motors provide the tactile, mechanical driving experience many RC enthusiasts prefer. Choose based on whether you value simplicity and affordability (brushed) or ultimate efficiency and performance (brushless).
• Is this motor suitable for RC buggy and truck applications? — Yes, the 550 size with 21T configuration works well in RC buggies, RC short course trucks, and similar applications where balanced torque and speed are valued. The sport-tuned setup makes it particularly suitable for recreational driving and entry-level competition, though you'll need to verify compatibility with your specific RC model's gearbox and motor mount specifications.

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 Etronix Sport Tuned Brushed Motor 550 - 21T ET0300-21 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.