- Brand: Losi
- Part Number: Z-LOSA99032
- EAN: 605482548424
- Product Type: Servo Arm / Servo Horn
- Spline Count: 25T
- Material: Aluminium
- Configuration: Single arm design
- Compatible Servo Brands: Futaba, Ace
- Application: Steering bell crank
Overview
The LOS Servo Arm, Aluminum (FUT Z-LOSA99032) is an optional aluminium replacement servo horn from Losi, designed specifically for use on steering bell cranks in RC vehicles. This single-arm servo horn represents a direct upgrade to stock plastic alternatives, offering enhanced durability and precision for RC enthusiasts across the UK who demand reliable performance from their radio-controlled cars. Whether you're running a competitive RC buggy, off-road truck, or any precision RC vehicle that relies on accurate steering input, this aluminium servo arm delivers the mechanical rigidity needed for consistent control and responsive handling.
This is not simply a cosmetic upgrade—the aluminium construction provides superior strength compared to plastic servo horns, making it an ideal choice for bashers, racers, and hobbyists who want to reduce steering arm flex and maintain accurate servo response under load. The LOS Servo Arm is engineered to work seamlessly with both Futaba and Ace servo systems, making it a versatile upgrade option for numerous RC car setups currently in use throughout the UK RC community. If you're looking to improve your RC vehicle's steering precision and durability, this aluminium servo arm is an essential component to consider.
Available now from RC Model Shop, this genuine Losi part is backed by our commitment to authentic products and expert knowledge. Whether you're maintaining an existing RC model or upgrading your setup for better performance, the Z-LOSA99032 offers reliability and quality that Losi is renowned for in the RC hobby sector.
Key Features
- Aluminium construction — Manufactured from lightweight yet rigid aluminium, this servo arm resists flex and deformation under steering load, ensuring your servo maintains precise control authority even during aggressive driving or racing conditions.
- 25T spline compatibility — Designed with a 25-tooth spline pattern, this servo arm fits directly onto Futaba and Ace servo shafts, making installation straightforward for RC cars and trucks currently equipped with these industry-standard servo brands.
- Single arm design — The single-arm configuration is purpose-built for steering bell crank applications, providing the specific geometry required for optimal steering linkage geometry in RC vehicles.
- Optional upgrade part — As an optional component from Losi, this servo arm allows you to selectively upgrade just the steering system on your RC model, making it an economical way to improve performance without replacing the entire servo or control system.
- Enhanced durability — Aluminium offers superior impact resistance and longevity compared to standard plastic servo horns, reducing the frequency of replacements and maintenance downtime on your RC vehicle.
Technical Performance
The LOS Servo Arm represents a significant engineering improvement in RC steering systems through its use of high-quality aluminium material. The 25-tooth spline design ensures secure engagement with Futaba and Ace servo shafts, eliminating the slippage and play that can develop in plastic servo arms during competitive racing or high-demand driving scenarios. The aluminium construction provides exceptional rigidity, which translates directly to improved steering response and more accurate vehicle control in RC buggy racing, off-road RC truck applications, and general RC car operation. This servo arm is lightweight, avoiding unnecessary weight penalty whilst delivering the structural strength needed for precision steering in RC vehicles across all driving conditions. The engineering philosophy behind this component reflects Losi's commitment to quality parts that enhance the reliability and performance characteristics of RC models. Users upgrading from plastic servo horns will immediately notice the reduction in steering arm flex, resulting in more consistent and repeatable handling characteristics on their RC vehicle.
What's in the Box
- 1x LOS Servo Arm, Aluminum 25T (Futaba compatible)
Frequently Asked Questions
- Is this LOS servo arm compatible with my RC car's servo system? — The Z-LOSA99032 is engineered to work with Futaba and Ace servo systems featuring standard 25-tooth splines. Before purchasing, verify that your RC vehicle is equipped with one of these servo brands and that the servo shaft uses a 25T spline pattern. This ensures perfect compatibility and proper installation on your RC model.
- What are the advantages of an aluminium servo arm over plastic? — Aluminium servo arms offer several key benefits for RC vehicle performance. The material is significantly more rigid than plastic, meaning it resists flexing under steering load, which translates to more precise and responsive steering control. Aluminium is also more impact-resistant, making it better suited for aggressive driving, racing, and bashing with your RC car. Additionally, aluminium arms last longer and require fewer replacements, making them a cost-effective upgrade for serious RC enthusiasts.
- Will upgrading to this servo arm improve my RC vehicle's handling? — Yes, upgrading to the LOS Servo Arm can meaningfully improve steering response and handling consistency on your RC vehicle. By reducing flex in the steering linkage, this aluminium component allows your servo to communicate steering input to the wheels more directly and accurately. This is particularly noticeable in competitive RC racing environments or when driving at high speeds where steering precision directly impacts performance.
- Can I use this servo arm on different Losi RC models? — The Z-LOSA99032 is specifically designed as a steering bell crank servo arm, and Losi specifies it for use with compatible vehicles in their range. Verify your specific RC model's documentation to confirm compatibility before purchase. The 25T spline interface ensures it will fit Futaba and Ace servos, but the physical mounting configuration may vary between different RC vehicle platforms.
- Is this suitable for beginners? — This servo arm is suitable for any RC enthusiast, from beginners to advanced competitors. However, it is most beneficial for users who already understand servo installation and RC vehicle maintenance. Beginners just starting with RC cars UK will find this a worthwhile upgrade to consider after becoming familiar with basic RC operation and maintenance procedures.
- Do I need any special tools to install this servo arm? — Installation of the LOS Servo Arm is straightforward and requires only basic RC maintenance tools. You will need to remove the existing servo horn from your servo shaft and install this aluminium arm in its place. A servo arm puller tool is recommended to safely remove the old arm without damaging the servo, though careful use of a flathead screwdriver can work in many cases.
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 LOS Servo Arm, Aluminum: FUT Z-LOSA99032 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.
