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Spektrum S665 20kg High Torque Steel Gear RC Servo 25T P-SPMS665

Model No: P-SPMS665


COMING SOON 15/05/2026

Coming Soon

£59.99

£6.00

£53.99

Inc VAT

1 Year Warranty
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  • Manufacturer: Spektrum
  • Model Number: SPMS665
  • Product Name: S665 Standard High Torque Steel Gear Servo
  • Servo Type: Standard Size Servo
  • Torque Output: 20kg
  • Gear Type: Steel Gears
  • Pinion Configuration: 25T (25-tooth)
  • Customer Rating: 4.5 out of 5

Overview

The Spektrum S665 Standard High Torque Steel Gear Servo is a professional-grade servo designed for serious RC enthusiasts who demand reliable performance and exceptional power in their RC car UK builds. This 20kg high-torque servo delivers the strength and precision needed for demanding applications, whether you're piloting a competitive RC buggy, an off-road crawler, or any ready to run RC vehicle that requires responsive, powerful servo control. With its steel gear construction and robust engineering, the S665 represents a significant step up in servo performance for those looking to elevate their RC experience.

Whether you're upgrading an existing brushless RC car setup or building a competition-grade RC vehicle from scratch, the S665 offers the torque and reliability that serious hobbyists expect. This servo has earned a strong 4.5 out of 5 customer rating, reflecting genuine user satisfaction and proven real-world performance. The 25T pinion configuration ensures optimal speed and control characteristics for a wide range of RC applications, making this servo an excellent choice for RC enthusiasts across the UK who refuse to compromise on quality.

Manufactured by Spektrum, a trusted name in RC electronics and radio control systems, the S665 brings professional-level engineering to your RC setup. From casual weekend bashers upgrading their standard servos to competitive drivers optimising their RC vehicles for performance, this high-torque servo meets the demands of serious hobbyists and provides the durability needed for consistent, reliable operation in demanding RC applications.

Key Features

  • 20kg High Torque Output — This servo delivers substantial torque for demanding RC applications, providing the strength needed to handle steering loads, suspension adjustments, and directional control even in challenging conditions or during aggressive driving manoeuvres.
  • Steel Gear Construction — The use of steel gears throughout the servo's internal mechanics ensures exceptional durability and longevity, resisting wear and maintaining precision through countless hours of operation, making this servo a long-term investment for your RC car UK build.
  • 25T Pinion Configuration — The 25-tooth pinion is engineered to provide optimal speed and control characteristics, balancing responsiveness with precision so your RC vehicle responds immediately to your inputs without sacrificing control accuracy.
  • Standard Size Servo Format — Fitting the widely-adopted standard servo mounting pattern, the S665 integrates seamlessly into most RC car models, simplifying upgrades and allowing easy swaps with existing servos in your collection.
  • Spektrum Brand Quality — Backed by Spektrum's reputation for professional-grade RC electronics, this servo represents reliable engineering and proven performance standards recognised by RC enthusiasts throughout the UK and globally.
  • Professional Customer Rating — The 4.5 out of 5 customer rating demonstrates real-world satisfaction and proven reliability from actual users operating the S665 in demanding RC applications and competitive environments.

Technical Performance

The Spektrum S665 represents premium servo engineering with its 20kg torque specification and steel gear construction, making it suitable for discerning RC car UK owners who understand that servo quality directly impacts vehicle handling, steering precision, and overall control responsiveness. The steel gears throughout the servo's mechanism ensure resistance to stripping and wear, maintaining consistent performance through extensive use in both casual recreational driving and competitive RC racing scenarios. The 25T pinion configuration has been selected to provide the optimal balance between speed of response and force output, ensuring that drivers receive immediate feedback and control without sacrificing the power necessary to handle loaded steering geometry or aggressive manoeuvring. This servo performs as a direct control interface between your radio receiver and your RC vehicle's steering system, making the quality of this component directly proportional to the quality of your RC experience. Whether you're operating a brushless RC buggy, an electric RC truck, or any high-performance ready to run RC model, the S665 provides the precision and durability expected by serious hobbyists who demand reliability during extended driving sessions, competitive events, or challenging terrain exploration. The standard servo format ensures compatibility with the vast majority of RC vehicles on the market, and the professional-grade construction means this servo will maintain its performance characteristics over years of operation, justifying the investment in quality electronics for your RC setup.

What's in the Box

  • Spektrum S665 Standard High Torque Steel Gear Servo

Frequently Asked Questions

  • Is the Spektrum S665 suitable for upgrading my standard RC car? — Yes, the S665 is an excellent upgrade servo for RC cars that come with standard-grade servos. The 20kg high-torque output and steel gear construction provide significantly improved steering response, control precision, and durability compared to basic factory-installed servos, making it ideal for RC enthusiasts looking to enhance their ready to run RC vehicle performance.
  • What makes the S665 different from basic standard servos? — The S665 features steel gear construction throughout its internal mechanisms, which provides superior durability and wear resistance compared to plastic-geared servos found in entry-level RC cars. Combined with the high 20kg torque output, this servo delivers faster response times, more precise control, and longer operational life, making it a worthwhile investment for serious RC car UK hobbyists.
  • Will this servo work with my existing RC vehicle? — The Spektrum S665 uses standard servo mounting format and connections, making it compatible with the vast majority of RC vehicles on the market, including most electric RC cars, off-road buggies, and brushless RC models. Verify your vehicle's servo connection type before purchasing to ensure compatibility with your specific RC setup.
  • How does the 25T pinion affect servo performance? — The 25-tooth pinion configuration is engineered to provide optimal balance between response speed and torque delivery. This means your RC vehicle will have snappy, responsive steering that immediately reacts to your control inputs, whilst maintaining the strength needed to handle steering loads even during aggressive driving or off-road use.
  • What is the Spektrum S665 rated for in terms of customer satisfaction? — The S665 has earned a strong 4.5 out of 5 customer rating, which reflects genuine user satisfaction and proven reliability in real-world RC applications across various vehicle types and driving conditions.

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 S665 20kg Standard High Torque Steel Gear Servo, 25T P-SPMS665 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.
  • 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.