The BlackBearing Ceramic 6801-2RS bearing was developed to meet the constraints of cycling, whatever your discipline (road, MTB, cyclocross, etc.). They can be used on all parts of the bicycle that meet the 12x21x5 mm dimensions, whether for wheel hubs, derailleur pulleys, MTB frame pivot points, and more.
The quality of the ceramic allows for lighter bearings, better resistance at very high rotational speeds, with a longer lifespan compared to standard steel quality. The other major advantage is the much lower level of friction, which ensures better performance and thus less energy loss during pedaling. It also offers greater rigidity, greater precision, and greater compression resistance. In short, ceramic bearings offer the best performance for cyclists looking to optimize the operation of their bicycle.
Features
- Silicon nitride balls
- Steel cage
- Stainless steel rings treated for better mechanical resistance
- Specific grease for ceramic bearings
- Low-friction 2RS seals: waterproof and dustproof
- Inner diameter: 12 mm
- Outer diameter: 21 mm
- Thickness: 5 mm
- Reference: 6801-2RS