Futaba Alloy Single Servo Arm 20mm Silver FUTEBS3430

Overview

The Futaba Alloy Single Servo Arm 20mm (0.8") Silver is a precision-engineered aluminium servo arm designed for RC enthusiasts who demand quality and reliability in their radio control setups. Whether you're building a competitive RC car, buggy, truck or other RC vehicle in the UK, having the right servo accessories is crucial to achieving smooth, responsive control. This beautifully crafted servo horn represents Futaba's commitment to excellence, backed by over 60 years of leadership in radio control technology since 1962.

This compact 20mm servo arm is the ideal choice when you need a short arm length for tight spaces or applications requiring precise, controlled movement with minimal extension. The silver aluminium construction provides an excellent balance between lightweight performance and durability, ensuring your servo operates at peak efficiency whether you're racing, bashing, or performing detailed scale manoeuvres. RC enthusiasts across the UK and Ireland trust Futaba spares and upgrades to enhance their models, and this servo arm is no exception.

Supplied under Futaba part number FUTEBS3430, this servo arm is recommended for users aged 14 and over, making it suitable for experienced hobbyists and competitive racers alike. Whether you're replacing a worn component, upgrading your existing setup, or building a new RC model from scratch, the Futaba Alloy Single Servo Arm 20mm delivers the precision and quality you expect from Futaba's renowned range of radio control accessories and spares.

Key Features

• Compact 20mm Length — At just 20mm (0.8 inches), this servo arm is specifically designed for applications where space is limited or where a shorter arm length is required to maintain precise control geometry, making it ideal for tight RC builds and competitive racing setups.
• Lightweight Aluminium Construction — Manufactured from high-grade aluminium, the arm provides an excellent strength-to-weight ratio, reducing unsprung mass on your RC model and improving overall handling characteristics without sacrificing durability or reliability.
• Silver Anodised Finish — The professional silver anodised finish not only looks attractive and maintains a clean aesthetic on your RC vehicle, but also provides corrosion resistance to protect the arm during outdoor use and storage.
• Futaba Quality Engineering — Designed and manufactured by Futaba, a company with nearly 75 years of heritage in radio control since 1948, this servo arm benefits from decades of precision engineering and quality control standards that RC enthusiasts have come to trust.
• Compatible with Standard Servo Splines — This servo arm is engineered to fit standard Futaba servo splines, making it a reliable direct replacement or upgrade for existing servo horns on compatible Futaba servos used in RC cars, buggies, trucks and other radio control applications.
• Age Recommendation 14+ — Suitable for teenagers and adults with RC hobby experience, reflecting the precision assembly and installation requirements typical of quality servo accessory upgrades.

Technical Performance

The Futaba Alloy Single Servo Arm 20mm represents the pinnacle of servo horn engineering for RC applications. Precision-engineered from high-grade aluminium, this component is manufactured to exacting tolerances to ensure perfect fitment with compatible Futaba servo gearboxes. The 20mm length is strategically chosen for applications where mechanical advantage and precision control are balanced against physical space constraints—a common requirement in competitive RC racing where every millimetre matters and where servo geometry directly impacts steering response, turning radius and overall handling characteristics. The silver anodised finish provides not only an attractive appearance that complements modern RC builds, but also offers enhanced corrosion resistance for long-term outdoor use. Whether you're operating in dusty desert conditions, wet weather environments typical of UK autumn and winter racing, or clean indoor track facilities, the aluminium construction and protective finish ensure consistent performance and reliability. The arm's compact dimensions (20mm) make it particularly suitable for 1/10 scale RC cars, buggies and short course trucks where servo arms typically operate in confined bodywork spaces. Installation is straightforward for experienced RC hobbyists—simply remove your existing servo horn and press the new Futaba arm onto the servo spline, securing it with the existing retaining nut.

What's in the Box

• Futaba Alloy Single Servo Arm 20mm (0.8"), Silver

Frequently Asked Questions

• Will this servo arm fit my RC car, buggy or truck? — This servo arm is designed to fit standard Futaba servo splines found on compatible Futaba servos. Before purchasing, verify that your servo uses a standard Futaba spline—check your servo documentation or the manufacturer's specifications. Futaba servos are commonly used in RC cars, buggies, short course trucks and other vehicles across the UK RC racing and bashing communities.
• Why would I choose a 20mm servo arm instead of a longer arm? — A 20mm servo arm is ideal when space is limited or when you prefer faster servo response with less mechanical leverage. Shorter arms require more servo torque to achieve the same control input, but they allow for tighter steering geometry and fit into compact spaces within your RC model's bodywork. This makes the 20mm length perfect for modern low-profile RC designs.
• Is this suitable for beginners in RC hobbies? — Whilst this servo arm is recommended for ages 14 and over, it's a replacement part rather than a complete beginner's product. Beginners should first purchase a ready-to-run RC car or RTR kit that comes with all necessary components pre-assembled. However, once you've gained experience and wish to upgrade or replace servo horns, this Futaba arm is an excellent choice.
• What is the difference between aluminium and plastic servo arms? — Aluminium servo arms like this Futaba component offer superior durability, lower weight, better precision and longer lifespan compared to plastic alternatives. Whilst plastic arms are adequate for casual use, aluminium arms are the choice of serious RC racers and bashers across the UK who demand reliability during competitive events and intense weekend sessions.
• Will this arm work with servos from other brands? — This arm is specifically engineered for Futaba servos with standard Futaba splines. Whilst some servo brands use similar spline patterns, we recommend checking compatibility with your specific servo model before purchasing. Futaba is renowned for consistency across their servo range, so if your servo is genuine Futaba, this arm should fit correctly.
• How do I install this servo arm on my Futaba servo? — Remove your existing servo horn by unscrewing the retaining nut on the servo output shaft. Press the new 20mm Futaba aluminium arm firmly onto the spline, then secure it with the retaining nut, ensuring it's tight but not over-tightened. Verify smooth operation before reassembling your RC model.

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 Futaba Alloy Single Servo Arm 20mm (0.8"), Silver FUTEBS3430 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.