- Bearing type: Shielded ball bearing
- Bearing pack size: Pair of 2 bearings
- Outer diameter: 15mm
- Inner bore diameter: 12mm
- Width: 4mm
- Brand: Losi
- Part number: Z-LOSA6944
- EAN: 605482012857
Overview
The Losi 15x12x4 shielded ball bearings are essential precision components designed for RC enthusiasts who demand reliability and smooth performance from their radio-controlled vehicles. Whether you're running a competitive RC car in the UK or simply enjoying weekend bashing sessions, these genuine Losi replacement bearings ensure your model operates at peak efficiency. As a critical wear item in any RC vehicle, quality bearings directly impact handling, speed and the overall longevity of your RC model, making this a worthwhile investment for serious hobbyists.
These are genuine Losi-branded bearings, manufactured to exacting standards to match the performance specifications of Losi RC vehicles. The shielded design protects the internal ball races from dust, dirt and debris—a crucial feature if you're running your RC car outdoors in the UK's variable weather conditions. Replacing worn bearings with fresh Losi originals will restore your RC model to factory performance levels and ensure smooth, responsive handling whether you're on tarmac or off-road terrain.
Supplied as a pair, these bearings offer excellent value and are the ideal replacement for maintaining your Losi RC vehicle. If you're serious about keeping your RC car in top condition, stock these genuine parts and enjoy the peace of mind that comes with using authorised manufacturer components.
Key Features
- Shielded design — The metal shields protect the ball races from contamination, moisture and debris, ensuring the bearings maintain smooth rotation even in dusty or damp conditions typical of UK outdoor RC running.
- Genuine Losi component — These are OEM (original equipment manufacturer) parts from Losi, guaranteeing exact fitment and performance compatibility with your Losi RC model.
- Supplied as a pair — You receive two bearings in this pack, allowing you to replace worn components on multiple chassis locations or keep spares for future maintenance.
- Precision manufactured — Losi bearings are produced to tight tolerances using quality steel ball races and races, delivering smooth, low-friction performance essential for competitive RC driving.
- Drop-in replacement — These bearings are designed to fit directly into Losi chassis without modification, making bearing replacement quick and straightforward even for less experienced RC enthusiasts.
Technical Performance
The Losi 15x12x4 shielded ball bearings represent a critical maintenance component for any Losi RC vehicle owner. With inner bore diameter of 12mm, outer diameter of 15mm and width of 4mm, these bearings are engineered to support high-speed rotation while maintaining concentricity and minimal runout. The shielded construction is particularly important for RC applications where vehicles are subjected to outdoor conditions, wet grass, sandy terrain and dust-laden environments common across the UK. The metal shields act as a first line of defence against contamination whilst still allowing smooth operation through the sealed ball races. Quality ball bearing steel ensures durability under the constant acceleration, deceleration and cornering loads experienced during RC driving, whether you're bashing, racing or crawling. These bearings directly influence vehicle handling responsiveness, top speed efficiency and drivetrain longevity—making regular bearing inspection and replacement part of professional RC maintenance practice.
What's in the Box
- Losi 15x12x4 shielded ball bearings x2
Frequently Asked Questions
- What size are these Losi ball bearings and will they fit my RC vehicle? — These bearings measure 15x12x4mm (outer diameter x inner bore x width). They are genuine Losi components designed for specific Losi RC models. Check your vehicle manual or contact us to confirm compatibility with your particular Losi chassis before purchasing.
- Why do RC bearings need to be shielded? — The metal shields protect the internal ball races from dirt, dust, sand and moisture that would otherwise cause friction, wear and eventual failure. Shielded bearings are essential for outdoor RC running in the UK where conditions can be muddy, wet or sandy, extending bearing lifespan significantly compared to open designs.
- How often should I replace my RC bearings? — This depends on usage intensity and environmental conditions. Regular inspection during maintenance is recommended. If you notice binding, grinding sounds or rough rotation, bearings should be replaced immediately. Many competitive RC drivers replace bearings every season or after heavy use to maintain peak performance.
- Are these compatible with other RC brands? — These are genuine Losi bearings designed specifically for Losi RC vehicles. Whilst bearing sizes are standardised, fitment location and chassis design varies between manufacturers. Use these only as replacements for worn Losi bearings in compatible Losi models.
- Can I clean and reuse old bearings? — Whilst bearings can sometimes be cleaned, replacement with fresh components is recommended for optimal performance. Bearings that have been damaged, contaminated or worn cannot be restored to factory specification through cleaning alone.
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 Losi 15x12x4 shielded ball bearings Z-LOSA6944 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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- 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.
