FUTEBS0169

Overview

The Futaba Metal Double Servo Arm 3 1/2" (89mm) is a premium-quality servo accessory designed for RC enthusiasts who demand precision and reliability in their linkage setups. Whether you're building a custom RC car in the UK, setting up a competition-grade buggy, or fine-tuning your RC truck's control surfaces, this metal servo arm provides the structural integrity and performance you need. Manufactured by Futaba, a name synonymous with quality RC radio systems and accessories since 1948, this servo arm represents decades of engineering expertise combined with practical, straightforward design.

This double-sided metal servo arm is ideal for anyone requiring balanced mechanical advantage and consistent performance across a range of RC applications. The 89mm length strikes an excellent balance between useful leverage and lightweight construction, making it suitable for applications where responsive control and minimal weight are critical factors. Available in an attractive silver finish, the arm complements any RC build whilst delivering the durability and precision that serious RC hobbyists expect from Futaba spare parts.

RC enthusiasts in the UK and across the globe trust Futaba servo horns and accessories as essential components for reliable, high-performance RC systems. Whether you're replacing a worn arm, building a custom RC setup, or upgrading your existing model, the Futaba Metal Double Servo Arm 3 1/2" represents a trusted choice from a manufacturer with over 75 years of RC heritage.

Key Features

• Metal Construction — Built from durable metal rather than plastic, this servo arm provides superior strength and consistency compared to composite alternatives. Metal construction ensures the arm maintains its shape and performance characteristics over extended use, even under demanding control inputs, making it ideal for serious RC car and truck applications.
• Double Servo Arm Design — The double-sided configuration allows for flexible mechanical linkage arrangements, providing you with multiple connection points for balanced, symmetrical control setups. This design flexibility is essential for achieving precise steering geometry and control surface alignment in custom RC builds.
• 89mm / 3 1/2" Length — The 89mm length provides optimal leverage for servo control whilst keeping overall weight minimal. This size is commonly specified for a wide range of RC vehicles, from small-scale buggies to larger trucks, making it one of the most versatile servo arm dimensions available.
• Silver Finish — The attractive silver colour provides a clean, professional appearance that complements virtually any RC model aesthetic. The finish is applied to the metal substrate, providing both visual appeal and protection against corrosion.
• Lightweight Design — Despite its metal construction, the arm's minimal mass ensures it doesn't add unnecessary weight to your RC model. This is particularly important in applications where weight distribution and response time directly impact performance, such as precision steering in RC cars and buggies.
• Futaba Quality Assurance — As an official Futaba accessory, this servo arm undergoes rigorous quality control and is designed to work seamlessly with Futaba servo systems. Futaba's reputation for precision engineering means you can rely on consistent performance and compatibility across your RC setup.
• Universal Compatibility — This standard-sized servo arm is compatible with most modern RC servo spline patterns, making it a practical replacement or upgrade component for a wide range of RC vehicles and custom builds.

Technical Performance

The Futaba Metal Double Servo Arm 3 1/2" (89mm) exemplifies precision engineering in RC accessory design. Constructed from quality metal materials rather than plastic or composite alternatives, this servo arm delivers exceptional durability and dimensional stability that serious RC hobbyists demand. The 89mm length has become a standard specification across countless RC vehicle platforms, from competitive racing buggies to high-performance off-road trucks, because it provides the ideal balance between mechanical advantage and weight efficiency. The arm's double-sided design enables multiple connection points, allowing builders to create symmetrical, balanced linkage configurations that directly translate to improved steering response and control precision in RC cars and trucks. The silver finish not only provides a professional appearance but also offers protective qualities against environmental exposure. With a shipping weight of just 0.02kg (40 grams), this servo arm adds negligible mass to your RC setup whilst delivering the structural integrity required for consistent, reliable operation. The arm's compact design makes it suitable for applications ranging from small-scale RC models to larger platforms where space and weight savings are critical factors. Whether you're replacing worn components, building a custom RC car setup, or upgrading existing linkage arrangements, the Futaba Metal Double Servo Arm delivers the precision and dependability that defines the Futaba brand reputation in RC hobby circles across the UK and beyond.

What's in the Box

• Futaba Metal Double Servo Arm 3 1/2" (89mm) FUTEBS0169

Frequently Asked Questions

• Is the Futaba Metal Double Servo Arm 3 1/2" suitable for all RC servo types? — This servo arm features a standard spline connection pattern that is compatible with most modern RC servo systems. However, we recommend checking your specific servo's spline type before purchasing to ensure compatibility. The double servo arm design works with both analogue and digital servo systems, making it a versatile choice for most RC car, buggy and truck applications.
• What makes a metal servo arm better than plastic alternatives? — Metal servo arms offer superior durability, dimensional stability and consistency compared to plastic versions. Plastic can flex, wear and degrade over time, particularly in high-performance applications where servo loads are substantial. Metal construction ensures your linkage geometry remains precise and reliable, delivering consistent control response and steering accuracy throughout your RC model's operational life.
• Can this servo arm be used for steering and throttle control? — Yes, the Futaba Metal Double Servo Arm 3 1/2" is suitable for both steering and throttle linkages in RC cars, buggies and trucks. The double-sided design allows flexible connection arrangements, making it ideal for custom control setups. The metal construction provides the strength and rigidity required for reliable operation under the varying loads experienced in steering and throttle applications.
• What is the advantage of the 89mm size? — The 89mm (3 1/2") length is one of the most popular servo arm sizes in RC hobby applications because it strikes an excellent balance between mechanical leverage and weight efficiency. It provides sufficient arm length to deliver responsive steering control whilst keeping overall weight and inertia minimal, which translates directly to improved handling and response characteristics in RC cars and trucks.
• How does this servo arm contribute to improved RC performance? — Quality servo arms like this Futaba metal design ensure precise linkage geometry, which directly impacts steering accuracy and control response. By maintaining dimensional stability and providing rigid connection points, this servo arm helps translate servo commands into smooth, consistent steering inputs, improving overall control precision and handling characteristics in your RC vehicle.
• Is this product suitable for beginners building their first RC model? — Absolutely. Whilst this is a precision component designed for serious RC enthusiasts, it is equally suitable for beginners learning to build and customise RC models. The straightforward double servo arm design is easy to work with, and Futaba's reputation for quality ensures reliable performance as you develop your RC skills.

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 Metal Double Servo Arm 3 1/2" (89mm) FUTEBS0169 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.