High-performance ceramic wheel bearings for KOSMIC Mercury
Raceet® ceramic kart wheel bearings for Kosmic Mercury are designed to deliver improved track performance, optimal friction reduction and perfectly free rotation. Thanks to their high-density technical ceramic balls (hybrid technology: high-precision hardened steel rings, Si3N4 ceramic balls), lighter and harder than standard steel bearings, they reduce energy losses at the hubs and improve power transfer to the track. The result: faster acceleration out of corners, better high-speed stability and consistent performance lap after lap. Suitable for both recreational and competitive karting (Rotax, X30, KZ), these high-performance bearings are an ideal upgrade to optimize mechanical efficiency on dry or wet tracks.
| Product | Ceramic wheel bearings |
|---|---|
| Compatible with | |
| Brand | KOSMIC 
|
| Model | MERCURY |
| Year | Select during purchase |
| Installation | Workshop / DIY |
Ceramic wheel bearings Raceet® KOSMIC MERCURY
Raceet® ceramic wheel bearings allow the KOSMIC Mercury to reduce friction losses by 60% and increase bearing lifespan by +40%
| Optimization | Friction | |
|---|---|---|
| Installation | Workshop / DIY | |
| Category | Karting | |
| Compatible | Kosmic | |
| Model | Mercury |
The images shown are for illustration purposes only. We will supply the bearings and the exact quantity corresponding to the year of your karting. You may also send us your bearing dimensions by email if needed.
| Sujet | Ceramic wheel bearings for KARTING KOSMIC MERCURY |
|---|---|
| Question |
Boost your karting performance by reducing mechanical losses
Part of a kart's engine power is absorbed by the internal resistance of rotating components, especially the original wheel bearings. By installing Raceet® high-performance ceramic wheel bearings for karting, you significantly reduce the friction coefficient, improve mechanical efficiency and fully exploit the potential of your Kosmic Mercury. Designed to withstand very high rotational speeds, heavy radial loads and the intense stresses of kart racing (vibrations, heavy braking, repeated acceleration), they provide enhanced durability, excellent thermal stability and increased resistance to wear. Ideal for recreational karting as well as Rotax, X30 and KZ competition seeking performance, consistency and reliability lap after lap on dry or wet tracks.
Ceramic wheel bearing technical specifications for Kosmic Mercury
At the core of this technology are silicon nitride (Si3N4) ceramic balls, an advanced engineering material known for its low density, exceptional hardness and ability to maintain its mechanical properties at high temperatures. Their reduced mass lowers rotational inertia, allowing faster acceleration and more immediate response of the drivetrain and wheels. Their extremely dense structure also limits micro-deformation under load, ensuring consistent performance even at high rotational speeds.
The high-strength treated steel races ensure perfect compatibility with original hubs while benefiting from precision machining with micrometric tolerances. This high-precision finish allows optimal distribution of mechanical loads and a perfectly controlled contact surface, improving rotational stability and efficiency.
Overall performance is further enhanced by the use of reinforced polymer cages or high-performance PEEK cages. These advanced materials precisely guide the rolling elements, reduce parasitic vibrations and improve thermal dissipation. The internal guidance of the bearing remains stable even under high loads, promoting longer service life and quiet operation, even in demanding conditions such as racing, off-road riding or intensive training.
Top 3 reasons to choose RACEET® for your Kosmic Mercury
High Precision & Quality
We select the highest quality raw materials for our ceramic wheel bearings designed to be installed on your Kosmic.
Mechanical Performance
Improved real dynamic performance, reduced mechanical stress on rotating components and easy installation in standard hubs.
Ceramic Solution
If we cannot find the correct bearing reference for your application, you can contact us and provide the dimensions you need.