Losi Heavy Duty Ball Studs and Ends 4-40 x .215 Inch Suspension Spares Z-LOSA6025

• Manufacturer: Losi
• Part Number: Z-LOSA6025
• EAN: 660132005504
• Spare Part Type: Suspension Spares
• Ball Stud Size: 4-40
• Ball Stud Length: .215 inch
• Product Category: Heavy Duty Ball Studs and Ends
• Recommended Retail Price: £9.99

Overview

The Losi Heavy Duty Ball Studs and Ends Z-LOSA6025 are essential suspension replacement components for Losi RC models. These precision-engineered ball studs and ends measure 4-40 x .215 inch and are designed to deliver reliable performance in demanding RC applications. Whether you're maintaining your RC car UK collection, upgrading worn suspension components, or building a competition-ready setup, these heavy-duty ball studs provide the durability and precision fit that serious hobbyists and competitive racers demand. As a trusted RC hobby retailer, we stock Losi genuine parts because we know that quality suspension components are fundamental to optimal handling, responsiveness and longevity of your RC model.

Ball studs and ends form critical connection points in your RC vehicle's suspension system, linking steering arms, suspension links and control arms to the chassis and steering geometry. Over time, these components can wear, strip or become damaged through normal use, especially in competitive racing environments or aggressive bashing sessions. Replacing them with genuine Losi Heavy Duty Ball Studs and Ends ensures your suspension maintains its original engineering tolerances and performance characteristics. These are not generic aftermarket parts—they are factory-engineered components that integrate seamlessly with Losi suspension designs and deliver the reliability you need for consistent, predictable handling on the track or trail.

Losi is recognised worldwide as a manufacturer of high-quality RC vehicles and components. Their suspension parts are engineered to tight tolerances and constructed from quality materials to withstand the stresses and impacts of RC motorsport. When you choose the Losi Heavy Duty Ball Studs and Ends Z-LOSA6025, you're investing in genuine factory components that will restore your RC car to factory specifications and performance standards.

Key Features

• Heavy Duty Construction — These ball studs and ends are manufactured to heavy-duty specifications, meaning they feature enhanced durability and strength compared to standard components, allowing them to withstand greater loads and impacts without stripping, bending or failing during intense RC driving sessions.
• Genuine Losi Component — This is an authentic Losi factory part (model Z-LOSA6025), not a third-party equivalent, which guarantees precision engineering, exact fitment and compatibility with Losi suspension systems and ensures you maintain factory performance standards.
• Precise 4-40 x .215 Inch Specification — The exact dimensions (4-40 thread size with .215 inch length) ensure these ball studs and ends fit perfectly into Losi suspension mounting points and control arm attachment points without modification or trimming, maintaining proper suspension geometry and alignment.
• Suspension Spares Category — Classified as suspension spares, these components are critical to maintaining your RC vehicle's handling characteristics, steering response and overall ride quality, making them an essential maintenance item for any Losi RC car owner.
• Direct Replacement Part — These ball studs and ends are designed as drop-in replacements for worn or damaged factory components, allowing you to restore your Losi RC model to original specifications without requiring additional modifications or part adaptation.

Technical Performance

The Losi Heavy Duty Ball Studs and Ends Z-LOSA6025 represent precision suspension engineering at the component level. Manufactured to heavy-duty standards, these ball studs and ends provide the mechanical interface between your RC vehicle's control arms, suspension links and steering components. The 4-40 thread specification combined with the .215 inch overall length creates a standardised connection point that integrates with Losi's suspension design philosophy. Heavy-duty construction means these components are engineered to handle the repetitive stresses of suspension articulation, the impacts of landing jumps, and the lateral forces generated during cornering and high-speed manoeuvres. The ball stud design allows for articulation and movement within a controlled range whilst maintaining mechanical integrity and eliminating excessive play that would compromise handling precision. Quality materials and manufacturing tolerances ensure that these parts maintain their dimensions and mechanical properties over extended periods of use, resisting the wear, corrosion and stress-induced failure that can plague inferior aftermarket alternatives. For owners of Losi RC cars, whether you operate 1/10 scale buggies, trucks or other Losi models, maintaining suspension components with genuine factory parts ensures your vehicle delivers the handling characteristics and performance that Losi engineering intended.

What's in the Box

• Losi Heavy Duty Ball Studs and Ends 4-40 x .215 inch (Z-LOSA6025)

Frequently Asked Questions

• What are ball studs and ends used for in RC cars? — Ball studs and ends are critical suspension components that create the connection points between control arms, suspension links and chassis mounting points. They allow for articulation and movement of the suspension whilst maintaining mechanical precision. Without them, your RC vehicle's suspension cannot function, and worn ball studs will cause poor handling, loose steering response and unpredictable behaviour on the track.
• How do I know if my ball studs need replacing? — Signs of worn ball studs include loose or sloppy steering response, rattling noises from the suspension, visible play or movement in suspension components when shaken by hand, and difficulty maintaining consistent handling characteristics. If your RC car UK model exhibits these symptoms, replacing the ball studs and ends will typically restore crisp, responsive steering and suspension performance.
• Are these genuine Losi parts? — Yes, the Z-LOSA6025 is an authentic Losi factory component manufactured to their engineering specifications. Using genuine Losi parts ensures exact fitment, proper mechanical tolerances, and compatibility with Losi suspension systems. Factory parts also typically feature better material quality and durability compared to generic aftermarket alternatives.
• What Losi models use these ball studs and ends? — The 4-40 x .215 inch specification is used across multiple Losi platforms. You should verify compatibility with your specific model by consulting your vehicle's manual or parts diagram. If you're unsure whether these are correct for your model, our experienced RC team can assist you in identifying the right replacement parts for your Losi vehicle.
• How often should ball studs be replaced? — Replacement frequency depends on usage intensity, driving style and terrain. Competitive racers may need to replace ball studs more frequently than casual weekend bashers. Regular maintenance and inspection will help you identify wear early and maintain optimal suspension performance.
• Can I install these myself? — Ball stud replacement is a straightforward maintenance task for most RC enthusiasts with basic tools. However, if you're unfamiliar with RC suspension service, our team at RC Model Shop can provide guidance or recommend a qualified technician who can perform the installation for you.

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 Ball Studs and Ends, 4-40 x .215 inch Z-LOSA6025 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.
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• 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.
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• 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.