- Bearing size: 6x12mm
- Bearing type: Sealed ball bearings
- Pack quantity: 4
- Manufacturer: Losi
- Part number: Z-LOSA6940
- EAN: 605482138106
- Compatible models: Losi 1/4 Promoto-MX Motorcycle RTR with Battery and Charger, Losi 1/4 Promoto-MX Motorcycle RTR Club MX Blue, Losi 1/4 Promoto-MX Motorcycle RTR FXR Red
Overview
The Losi 6x12mm Sealed Ball Bearings (4) Z-LOSA6940 are essential replacement and upgrade components for RC enthusiasts maintaining their Losi vehicles. Whether you're a serious competitor or a weekend RC basher, quality bearings are fundamental to ensuring smooth, reliable performance in your RC car or motorcycle. These sealed ball bearings provide the precision engineering required to keep your model running efficiently, reducing friction and extending the lifespan of critical drivetrain components.
If you own a Losi 1/4 Promoto-MX motorcycle RTR, these bearings are a direct fit replacement that will restore your model to optimal performance condition. The sealed design protects internal rolling elements from dirt, dust and moisture, making them ideal for outdoor RC use in the UK where weather conditions can be unpredictable. For RC enthusiasts looking for reliable spare parts and upgrades, understanding bearing maintenance and replacement is a key part of keeping your RC vehicle in top condition.
RC Model Shop stocks genuine Losi spare parts and accessories, making it easy to find exactly what you need to maintain your RC collection. Whether you're upgrading for smoother operation or replacing worn bearings, these 6x12mm sealed ball bearings offer the quality and reliability that Losi is known for throughout the RC hobby.
Key Features
- Sealed Design — The sealed construction prevents dirt, dust, sand and water ingress into the bearing, which is essential for outdoor RC driving in all weather conditions and maintains consistent performance throughout the year.
- 6x12mm Size — These bearings are specifically engineered to fit the axle positions on compatible Losi Promoto-MX models, ensuring perfect fit and optimal load distribution during operation.
- Pack of Four — The set includes four individual ball bearings, providing enough components to replace a complete bearing set on your Promoto-MX motorcycle or maintain spares for future maintenance.
- Genuine Losi Component — As an official Losi spare part, these bearings meet the manufacturer's exact specifications and engineering standards, guaranteeing compatibility and performance with your RC model.
- Smooth Operation — Quality ball bearings reduce friction throughout the drivetrain, enabling your RC vehicle to accelerate more responsively and maintain higher speeds with improved efficiency.
- Extended Component Life — By replacing worn bearings promptly, you protect other critical drivetrain parts from damage and premature wear, ultimately extending the overall lifespan of your RC model.
Technical Performance
These 6x12mm sealed ball bearings are precision-engineered components manufactured by Losi to exacting standards that ensure reliable operation in demanding RC applications. The sealed design is a critical feature for UK RC enthusiasts, as it protects the internal rolling elements from the elements commonly encountered during outdoor RC car and motorcycle use. The bearing construction provides smooth rotation with minimal friction, which translates directly to improved acceleration, higher top speeds and better handling characteristics in your Losi Promoto-MX motorcycle. The sealed balls within each bearing are held in a precision cage that maintains proper spacing and alignment, ensuring even load distribution and consistent performance. Whether you're replacing bearings that have become worn through regular use or upgrading as part of a maintenance routine, these components will restore your model to factory performance standards. The 6x12mm dimensions are specifically calculated to fit the axle positions on Losi Promoto-MX RTR models, ensuring a perfect fit without modification.
What's in the Box
- 4 x Losi 6x12mm Sealed Ball Bearings
Frequently Asked Questions
- What RC models are these 6x12mm sealed ball bearings compatible with? — These bearings are compatible with the Losi 1/4 Promoto-MX Motorcycle RTR line, including the Losi 1/4 Promoto-MX Motorcycle RTR with Battery and Charger, the Club MX blue variant, and the FXR red variant. Check your model documentation to confirm bearing compatibility before purchasing.
- Why should I replace my RC bearings? — Ball bearings wear over time as your RC vehicle is used, especially if exposed to dirt, moisture or abrasive conditions. Worn bearings increase friction, reduce efficiency, slow acceleration and can eventually cause damage to other drivetrain components. Replacing them during routine maintenance keeps your RC model running smoothly and prevents more expensive repairs.
- What does sealed mean on a ball bearing? — Sealed ball bearings feature a protective shield or seal around the rolling elements that blocks out dirt, dust, sand and moisture. This is particularly valuable for RC enthusiasts in the UK who drive outdoors, as sealed bearings maintain performance in wet and muddy conditions much better than open or shielded designs.
- How often should I replace my RC bearings? — The frequency of bearing replacement depends on how often you use your RC model and the conditions in which you drive. Regular maintenance inspections will reveal if bearings have become rough, stiff or noisy. If you notice degraded performance or grinding sensations, it's time to replace them.
- Are these genuine Losi parts? — Yes, the Z-LOSA6940 is the official Losi part number for these 6x12mm sealed ball bearings. Purchasing genuine parts ensures perfect compatibility with your model and maintains the engineering standards that Losi designs into their vehicles.
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 6x12mm Sealed Ball Bearings (4) Z-LOSA6940 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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- 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.
