- Part Type: Hardware
- Spare Part Type: Chassis Spares
- Manufacturer: Losi
- Model Number: Z-LOSA99043
- EAN Code: 605482014103
- Compatibility: Futaba servo systems, Losi 8X, Losi 8XE
- Spline Type: 25 Spline
- Material: Metal
- Quantity in Package: 2
Overview
The LOS Metal Servo Arm Insert, 25 Spline, Futaba (2): 8X, 8XE Z-LOSA99043 is a precision replacement component designed for RC hobbyists who demand the highest levels of performance and durability from their radio-controlled vehicles. Whether you're running a competitive RC car UK setup or enjoying weekend bashing sessions, these metal servo arm inserts represent a genuine upgrade over standard plastic alternatives. Manufactured by Losi, a brand synonymous with quality RC engineering, this product delivers the reliability and mechanical integrity that serious RC enthusiasts have come to expect.
These servo arm inserts are engineered to provide superior strength and longevity in demanding RC applications. The 25-spline design ensures perfect compatibility with Futaba servo systems found in popular Losi models, specifically the 8X and 8XE platforms. For RC car UK owners and RC buggy enthusiasts who want to maximise the lifespan of their servo systems and reduce downtime due to component wear, upgrading to these metal inserts is a smart investment that pays dividends over the life of your model.
As a spare part and chassis component, the LOS Metal Servo Arm Insert delivers measurable improvements in durability and performance longevity. The metal construction resists the wear and tear that plastic alternatives succumb to after extended use, making these inserts particularly valuable for competitive drivers and those who run their RC models frequently. When you choose quality components like these for your ready to run RC or custom build, you're making a choice that extends the operational life of your entire servo system and reduces the need for frequent replacements.
Key Features
- Metal Construction — Unlike plastic alternatives that can wear, crack or degrade over time, these servo arm inserts are manufactured from metal, providing substantially greater durability and a longer operational lifespan. This matters to buyers because it means fewer replacements needed and better value over time.
- 25-Spline Design — The 25-spline configuration is specifically engineered to match the output shaft specifications of compatible Futaba servo units. This precise fitment ensures positive engagement without slippage, which directly translates to more responsive steering and more reliable performance in competitive and recreational RC applications.
- Futaba Compatibility — These inserts are engineered to work seamlessly with Futaba servo systems, eliminating guesswork and compatibility concerns. For RC enthusiasts who run Futaba equipped vehicles, this dedicated compatibility means drop-in installation and guaranteed performance.
- Model-Specific Design — Manufactured specifically for the Losi 8X and 8XE models, these inserts feature precise engineering tailored to these platforms. This model-specific approach ensures perfect fitment and optimal performance characteristics for owners of these popular RC vehicles.
- Two-Pack Quantity — This package includes two servo arm inserts, providing spare parts for redundancy and long-term serviceability. Having multiple inserts on hand means you can maintain your RC equipment without interruption to your driving schedule.
- OEM Quality Component — As genuine Losi hardware, these inserts meet the manufacturer's quality standards and engineering specifications. For RC car UK buyers who want assurance of authenticity and performance, choosing OEM components eliminates doubt about fitment and durability.
Technical Performance
The LOS Metal Servo Arm Insert, 25 Spline represents a significant engineering advantage over plastic servo arm components commonly found in standard RC configurations. The metal construction provides superior wear resistance and mechanical longevity, particularly important in high-demand applications where servo loading is substantial. The 25-spline interface is precision-engineered to mesh perfectly with Futaba servo output shafts, eliminating the micro-slippage and wear that can occur with poorly matched components. For RC enthusiasts running the Losi 8X and 8XE platforms, these inserts are calibrated to the exact specifications of these competitive and recreational vehicles. The two-piece inclusion in this package provides both immediate replacement capability and long-term spares for owners who run their RC models frequently. Build quality reflects Losi's reputation for durable engineering, with metal construction that resists the degradation that standard plastic components experience after extended use. Whether you're competing in organised RC events, running challenging terrain, or simply enjoying regular RC bashers on UK RC tracks and courses, upgrading to metal servo arm inserts provides measurable improvements in system reliability and component longevity that justify the investment.
What's in the Box
- LOS Metal Servo Arm Insert, 25 Spline — two pieces for Futaba servo systems
Frequently Asked Questions
- What is a servo arm insert and why do I need to upgrade to metal? — A servo arm insert is the small component that attaches your servo output shaft to the servo arm that mechanically controls your RC vehicle's steering or other functions. Metal inserts provide significantly greater durability than plastic alternatives, resisting wear and degradation that occurs during regular use. For RC car UK owners and those who run their models frequently, this upgrade reduces the need for component replacement and extends the operational life of your entire servo system.
- Is this product suitable for beginners? — Yes, this is suitable for any RC enthusiast from beginners to advanced competitors. However, it is a replacement spare part rather than a complete component, so installation requires basic mechanical knowledge of servo systems. Beginners should consult their vehicle's manual or seek guidance from experienced RC community members if unfamiliar with servo maintenance and component replacement procedures.
- Will these inserts work with my Futaba servo? — These metal servo arm inserts are specifically engineered for Futaba servo systems with a 25-spline interface. They are designed to fit Losi 8X and 8XE models equipped with compatible Futaba servos. Check your vehicle documentation to confirm your servo specification before purchasing, or contact RC Model Shop for compatibility confirmation.
- How do I install these metal servo arm inserts? — Installation typically involves removing your existing servo arm insert by unthreading the fastener that secures it to the servo output shaft, then sliding the new metal insert onto the shaft and re-securing it. Consult your vehicle's service manual or contact our team at RC Model Shop for detailed installation guidance specific to your Losi 8X or 8XE model.
- What is the difference between a 25-spline and other spline designs? — The spline count refers to the number of teeth on the shaft and corresponding grooves on the insert. A 25-spline design is specific to certain servo systems and provides precise mechanical engagement. Using the correct spline count is essential for proper fitment and reliable operation; mismatched splines result in poor engagement and premature wear.
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 Metal Servo Arm Insert, 25 Spline, Futaba (2): 8X, 8XE Z-LOSA99043 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.
